KR20220136725A - Electronic device for identifying connection of an external power source and method of operating the same - Google Patents

Abstract

An electronic device according to various embodiments includes a charging circuit and a controller. The charging circuit includes a battery, a power receiving terminal configured to be connected to an external charger, a charging control circuit connected to the power receiving terminal and the battery, and a detection circuit. The charging control circuit may be set to: check the adapter voltage applied to the power reception terminal through the detection circuit in a state of receiving power from the external charger connected to the power reception terminal; through the detection circuit, when a first voltage corresponding to the adapter voltage is lower than a reference voltage, confirm an adapter current corresponding to power supplied by the power receiving terminal; through the detection circuit, if the adapter current is equal to or greater than the reference current, check whether the first voltage maintains a voltage lower than the reference voltage for a specified time period; and according to the check result, check whether the external charger is connected to the power receiving terminal. Misrecognition can be reduced.

Description

Electronic device for checking the connection of an external power source and its operation method

Various embodiments relate to an electronic device for checking connection of an external power source and an operating method thereof.

In recent years, as the performance of the CPU and/or GPU installed in the notebook computer has continuously increased, the average power consumption of the notebook computer has not increased significantly, but the instantaneous power consumption has greatly increased, and the frequency of instantaneous power consumption has also increased. is increasing This is to supply a high current instantaneously to the CPU and/or GPU for fast processing of the process.

However, if the magnitude of the current is momentarily increased to supply an instantaneously high current, a voltage drop may occur instantaneously. The voltage drop may be proportional to the amount of current consumed instantaneously by various system internal components. For example, the degree of voltage drop may be determined by V = I x R. That is, the voltage may be reduced by the magnitude of the rising current.

If a voltage drop due to an instantaneous increase in current above the reference value occurs at the power receiving terminal connected to the external power source, the voltage of the power receiving terminal may drop lower than the reference voltage for determining the connection state of the external power source, so that the electronic device may be mistaken for removing the external power source even though the external power source (eg, an external charger) is connected. If it is mistakenly assumed that the external power source has been removed, the electronic device may supply power stored in a battery instead of the external power source to the system, and may operate in a battery power mode. That is, a voltage drop occurs due to an instantaneous increase in the load current, and the electronic device may unintentionally change the power mode.

According to various embodiments of the present disclosure, in a state in which power is received from an external power source connected to a power receiving terminal, a voltage drop due to an instantaneous current rise is checked through a detection circuit including a deglitch circuit, and based on this, the power An electronic device for checking whether an external charger is connected to a receiving terminal and an operating method thereof can be provided.

An electronic device according to various embodiments of the present disclosure includes a charging circuit and a controller, wherein the charging circuit includes a battery, a power receiving terminal configured to be connected to an external charger, a charging control circuit connected to the power receiving terminal and the battery, and a detection circuit including, wherein the charge control circuit checks the adapter voltage applied to the power receiving terminal while receiving power from the external charger connected to the power receiving terminal, and through the detection circuit, If the corresponding first voltage is lower than the reference voltage, check the adapter current corresponding to the power supplied by the power receiving terminal, and through the detection circuit, if the adapter current is equal to or greater than the reference current, the first voltage for a specified time It may be set to check whether a voltage is maintained at a voltage lower than the reference voltage, and to check whether the external charger is connected to the power receiving terminal according to a check result.

A method of operating an electronic device according to various embodiments of the present disclosure includes: checking an adapter voltage applied to the power receiving terminal while receiving power from an external charger connected to the power receiving terminal of the electronic device; detecting the electronic device checking, through a circuit, an adapter current corresponding to the power supplied by the power receiving terminal when the first voltage corresponding to the adapter voltage is lower than a reference voltage; If it is above, it may include an operation of determining whether the first voltage maintains a voltage lower than the reference voltage for a specified time, and an operation of determining whether the external charger is connected to the power receiving terminal according to the confirmation result. have.

An electronic device according to various embodiments of the present disclosure includes a charging circuit and a controller, wherein the charging circuit includes a battery, a power receiving terminal configured to be connected to an external charger, a charging control circuit connected to the power receiving terminal and the battery, and a detection circuit including, wherein the charge control circuit checks the adapter voltage applied to the power receiving terminal while receiving power from the external charger connected to the power receiving terminal, and through the detection circuit, If the corresponding first voltage is lower than the reference voltage, check the adapter current corresponding to the power supplied by the power receiving terminal, and through the detection circuit, if the adapter current is equal to or greater than the reference current, the first voltage for a specified time It is checked whether the voltage is maintained at a voltage lower than the reference voltage, and if the first voltage rises above the reference voltage within the specified time, it is confirmed that the external charger is connected to the power receiving terminal, and within the specified time When the first voltage is maintained at a voltage lower than the reference voltage, the external charger is set to confirm that it is disconnected from the power receiving terminal, and the detection circuit includes a current sensing circuit, a comparator, and a deglitch. (deglitch) circuit, wherein the current sensing circuit senses the current, the comparator compares the sensed current with the reference current, and outputs a first signal to the deglitch circuit according to the comparison result, , the deglitch circuit may be configured to output a detection signal to the charge control circuit based on the first voltage and the first signal.

The electronic device according to various embodiments of the present disclosure may reduce erroneous recognition that the connection of the external charger is disconnected due to a voltage drop due to an instantaneous load current increase generated at a point in the electronic device.

1 is a diagram illustrating a network environment according to various embodiments of the present disclosure;
2 is a block diagram illustrating a schematic configuration of an electronic device according to various embodiments of the present disclosure;
3 is a flowchart for describing a method of operating an electronic device according to various embodiments of the present disclosure;
4 is a block diagram illustrating a charging circuit included in an electronic device according to various embodiments of the present disclosure;
5 is a block diagram illustrating a charging circuit included in an electronic device according to various embodiments of the present disclosure;
6 is a flowchart illustrating an operation in which an electronic device determines whether an external power source is connected to a power reception terminal using a detection circuit according to various embodiments of the present disclosure;
7 is a flowchart illustrating an operation in which an electronic device determines whether an external power source is connected to a power receiving terminal using a detection circuit according to various embodiments of the present disclosure;
8 is a diagram for describing output signals of a deglitch circuit and a charge control circuit according to various embodiments of the present disclosure;
9 is a diagram for describing output signals of a comparator, a deglitch circuit, and a charge control circuit according to an instantaneous current according to various embodiments of the present disclosure;
10A is a diagram for describing an operation of misrecognizing whether an external power source is connected to a power receiving terminal by an instantaneous current by an electronic device not including a detection circuit according to various embodiments of the present disclosure;
10B is a diagram for describing an operation of checking whether an external power source is connected to a power receiving terminal by an instantaneous current by an electronic device including a detection circuit according to various embodiments of the present disclosure;

Hereinafter, an electronic device according to various embodiments will be described with reference to the accompanying drawings. The term user used in various embodiments may refer to a person who uses an electronic device or a device (eg, an artificial intelligence electronic device) using the electronic device.

1 is a block diagram of an electronic device 101 in a network environment 100, according to various embodiments. Referring to FIG. 1 , in a network environment 100 , the electronic device 101 communicates with the electronic device 102 through a first network 198 (eg, a short-range wireless communication network) or a second network 199 . It may communicate with the electronic device 104 or the server 108 through (eg, a long-distance wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108 . According to an embodiment, the electronic device 101 includes a processor 120 , a memory 130 , an input module 150 , a sound output module 155 , a display module 160 , an audio module 170 , and a sensor module ( 176), interface 177, connection terminal 178, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196 , or an antenna module 197 . In some embodiments, at least one of these components (eg, the connection terminal 178 ) may be omitted or one or more other components may be added to the electronic device 101 . In some embodiments, some of these components (eg, sensor module 176 , camera module 180 , or antenna module 197 ) are integrated into one component (eg, display module 160 ). can be

The processor 120, for example, executes software (eg, a program 140) to execute at least one other component (eg, a hardware or software component) of the electronic device 101 connected to the processor 120. It can control and perform various data processing or operations. According to one embodiment, as at least part of data processing or operation, the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190 ) to the volatile memory 132 . may be stored in , process commands or data stored in the volatile memory 132 , and store the result data in the non-volatile memory 134 . According to an embodiment, the processor 120 is the main processor 121 (eg, a central processing unit or an application processor) or a secondary processor 123 (eg, a graphic processing unit, a neural network processing unit (eg, a graphic processing unit, a neural network processing unit) a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor). For example, when the electronic device 101 includes the main processor 121 and the sub-processor 123 , the sub-processor 123 uses less power than the main processor 121 or is set to be specialized for a specified function. can The auxiliary processor 123 may be implemented separately from or as a part of the main processor 121 .

The secondary processor 123 may, for example, act on behalf of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or when the main processor 121 is active (eg, executing an application). ), together with the main processor 121, at least one of the components of the electronic device 101 (eg, the display module 160, the sensor module 176, or the communication module 190) It is possible to control at least some of the related functions or states. According to an embodiment, the coprocessor 123 (eg, an image signal processor or a communication processor) may be implemented as part of another functionally related component (eg, the camera module 180 or the communication module 190 ). have. According to an embodiment, the auxiliary processor 123 (eg, a neural network processing device) may include a hardware structure specialized for processing an artificial intelligence model. Artificial intelligence models can be created through machine learning. Such learning may be performed, for example, in the electronic device 101 itself on which artificial intelligence is performed, or may be performed through a separate server (eg, the server 108). The learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but in the above example not limited The artificial intelligence model may include a plurality of artificial neural network layers. Artificial neural networks include deep neural networks (DNNs), convolutional neural networks (CNNs), recurrent neural networks (RNNs), restricted boltzmann machines (RBMs), deep belief networks (DBNs), bidirectional recurrent deep neural networks (BRDNNs), It may be one of deep Q-networks or a combination of two or more of the above, but is not limited to the above example. The artificial intelligence model may include, in addition to, or alternatively, a software structure in addition to the hardware structure.

The memory 130 may store various data used by at least one component (eg, the processor 120 or the sensor module 176 ) of the electronic device 101 . The data may include, for example, input data or output data for software (eg, the program 140 ) and instructions related thereto. The memory 130 may include a volatile memory 132 or a non-volatile memory 134 .

The program 140 may be stored as software in the memory 130 , and may include, for example, an operating system 142 , middleware 144 , or an application 146 .

The input module 150 may receive a command or data to be used by a component (eg, the processor 120 ) of the electronic device 101 from the outside (eg, a user) of the electronic device 101 . The input module 150 may include, for example, a microphone, a mouse, a keyboard, a key (eg, a button), or a digital pen (eg, a stylus pen).

The sound output module 155 may output a sound signal to the outside of the electronic device 101 . The sound output module 155 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from or as part of the speaker.

The display module 160 may visually provide information to the outside (eg, a user) of the electronic device 101 . The display module 160 may include, for example, a control circuit for controlling a display, a hologram device, or a projector and a corresponding device. According to an embodiment, the display module 160 may include a touch sensor configured to sense a touch or a pressure sensor configured to measure the intensity of a force generated by the touch.

The audio module 170 may convert a sound into an electric signal or, conversely, convert an electric signal into a sound. According to an embodiment, the audio module 170 acquires a sound through the input module 150 , or an external electronic device (eg, a sound output module 155 ) connected directly or wirelessly with the electronic device 101 . The electronic device 102) (eg, a speaker or headphones) may output a sound.

The sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, a user state), and generates an electrical signal or data value corresponding to the sensed state. can do. According to an embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.

The interface 177 may support one or more specified protocols that may be used by the electronic device 101 to directly or wirelessly connect with an external electronic device (eg, the electronic device 102 ). According to an embodiment, the interface 177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

The connection terminal 178 may include a connector through which the electronic device 101 can be physically connected to an external electronic device (eg, the electronic device 102 ). According to an embodiment, the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).

The haptic module 179 may convert an electrical signal into a mechanical stimulus (eg, vibration or movement) or an electrical stimulus that the user can perceive through tactile or kinesthetic sense. According to an embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module 180 may capture still images and moving images. According to an embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.

The power management module 188 may manage power supplied to the electronic device 101 . According to an embodiment, the power management module 188 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

The battery 189 may supply power to at least one component of the electronic device 101 . According to one embodiment, battery 189 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.

The communication module 190 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the server 108). It can support establishment and communication performance through the established communication channel. The communication module 190 may include one or more communication processors that operate independently of the processor 120 (eg, an application processor) and support direct (eg, wired) communication or wireless communication. According to one embodiment, the communication module 190 is a wireless communication module 192 (eg, a cellular communication module, a short-range communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (eg, : It may include a local area network (LAN) communication module, or a power line communication module). A corresponding communication module among these communication modules is a first network 198 (eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 199 (eg, legacy It may communicate with the external electronic device 104 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (eg, a telecommunication network such as a LAN or a WAN). These various types of communication modules may be integrated into one component (eg, a single chip) or may be implemented as a plurality of components (eg, multiple chips) separate from each other. The wireless communication module 192 uses subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199 . The electronic device 101 may be identified or authenticated.

The wireless communication module 192 may support a 5G network after a 4G network and a next-generation communication technology, for example, a new radio access technology (NR). NR access technology includes high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and access to multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency) -latency communications)). The wireless communication module 192 may support a high frequency band (eg, mmWave band) to achieve a high data rate, for example. The wireless communication module 192 uses various techniques for securing performance in a high-frequency band, for example, beamforming, massive multiple-input and multiple-output (MIMO), all-dimensional multiplexing. It may support technologies such as full dimensional MIMO (FD-MIMO), an array antenna, analog beam-forming, or a large scale antenna.

The wireless communication module 192 may support various requirements defined in the electronic device 101 , an external electronic device (eg, the electronic device 104 ), or a network system (eg, the second network 199 ). According to an embodiment, the wireless communication module 192 may provide a peak data rate (eg, 20 Gbps or more) for realizing 1eMBB, loss coverage (eg, 164 dB or less) for realizing mMTC, or U-plane latency for realizing URLLC ( Example: Downlink (DL) and uplink (UL) each 0.5 ms or less, or round trip 1 ms or less) can be supported.

The antenna module 197 may transmit or receive a signal or power to the outside (eg, an external electronic device). According to an embodiment, the antenna module 197 may include an antenna including a conductor formed on a substrate (eg, a PCB) or a radiator formed of a conductive pattern. According to an embodiment, the antenna module 197 may include a plurality of antennas (eg, an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network such as the first network 198 or the second network 199 is connected from the plurality of antennas by, for example, the communication module 190 . can be selected. A signal or power may be transmitted or received between the communication module 190 and an external electronic device through the selected at least one antenna. According to some embodiments, other components (eg, a radio frequency integrated circuit (RFIC)) other than the radiator may be additionally formed as a part of the antenna module 197 .

According to various embodiments, the antenna module 197 may form a mmWave antenna module. According to one embodiment, the mmWave antenna module comprises a printed circuit board, an RFIC disposed on or adjacent to a first side (eg, bottom side) of the printed circuit board and capable of supporting a designated high frequency band (eg, mmWave band); and a plurality of antennas (eg, an array antenna) disposed on or adjacent to a second side (eg, top or side) of the printed circuit board and capable of transmitting or receiving signals of the designated high frequency band. can do.

At least some of the components are connected to each other through a communication method between peripheral devices (eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and a signal ( e.g. commands or data) can be exchanged with each other.

According to an embodiment, the command or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199 . Each of the external electronic devices 102 or 104 may be the same as or different from the electronic device 101 . According to an embodiment, all or a part of operations executed in the electronic device 101 may be executed in one or more external electronic devices 102 , 104 , or 108 . For example, when the electronic device 101 needs to perform a function or service automatically or in response to a request from a user or other device, the electronic device 101 may perform the function or service itself instead of executing the function or service itself. Alternatively or additionally, one or more external electronic devices may be requested to perform at least a part of the function or the service. One or more external electronic devices that have received the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit a result of the execution to the electronic device 101 . The electronic device 101 may process the result as it is or additionally and provide it as at least a part of a response to the request. For this purpose, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used. 111 The electronic device 101 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device 104 may include an Internet of things (IoT) device. The server 108 may be an intelligent server using machine learning and/or neural networks. According to an embodiment, the external electronic device 104 or the server 108 may be included in the second network 199 . The electronic device 101 may be applied to an intelligent service (eg, smart home, smart city, smart car, or health care) based on 5G communication technology and IoT-related technology.

The electronic device according to various embodiments disclosed in this document may have various types of devices. The electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device. The electronic device according to the embodiment of the present document is not limited to the above-described devices.

The various embodiments of this document and terms used therein are not intended to limit the technical features described in this document to specific embodiments, but it should be understood to include various modifications, equivalents, or substitutions of the embodiments. In connection with the description of the drawings, like reference numerals may be used for similar or related components. The singular form of the noun corresponding to the item may include one or more of the item, unless the relevant context clearly dictates otherwise. As used herein, "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "A , B, or C," each of which may include any one of the items listed together in the corresponding one of the phrases, or all possible combinations thereof. Terms such as "first", "second", or "first" or "second" may simply be used to distinguish an element from other elements in question, and may refer elements to other aspects (e.g., importance or order) is not limited. It is said that one (eg, first) component is “coupled” or “connected” to another (eg, second) component, with or without the terms “functionally” or “communicatively”. When referenced, it means that one component can be connected to the other component directly (eg by wire), wirelessly, or through a third component.

The term “module” used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and is interchangeable with terms such as, for example, logic, logic block, component, or circuit. can be used as A module may be an integrally formed part or a minimum unit or a part of the part that performs one or more functions. For example, according to an embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

Various embodiments of the present document include one or more instructions stored in a storage medium (eg, internal memory 136 or external memory 138) readable by a machine (eg, electronic device 101). may be implemented as software (eg, the program 140) including For example, the processor (eg, the processor 120 ) of the device (eg, the electronic device 101 ) may call at least one of the one or more instructions stored from the storage medium and execute it. This makes it possible for the device to be operated to perform at least one function according to the called at least one command. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not contain a signal (eg, electromagnetic wave), and this term is used in cases where data is semi-permanently stored in the storage medium and It does not distinguish between temporary storage cases.

According to one embodiment, the method according to various embodiments disclosed in this document may be provided in a computer program product (computer program product). Computer program products may be traded between sellers and buyers as commodities. The computer program product is distributed in the form of a machine-readable storage medium (eg compact disc read only memory (CD-ROM)), or via an application store (eg Play Store ^TM ) or on two user devices ( It can be distributed (eg downloaded or uploaded) directly, online between smartphones (eg: smartphones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily created in a machine-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or a relay server.

According to various embodiments, each component (eg, a module or a program) of the above-described components may include a singular or a plurality of entities, and some of the plurality of entities may be separately disposed in other components. have. According to various embodiments, one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg, a module or a program) may be integrated into one component. In this case, the integrated component may perform one or more functions of each component of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. . According to various embodiments, operations performed by a module, program, or other component are executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations are executed in a different order, or omitted. , or one or more other operations may be added.

2 is a block diagram illustrating a schematic configuration of an electronic device according to various embodiments of the present disclosure;

Referring to FIG. 2 , the electronic device 201 may include a charging circuit 210 and a load unit 250 . For example, the electronic device 201 may be implemented in the same or similar manner to the electronic device 101 or 102 of FIG. 1 . For example, the electronic device 201 may include a laptop computer, a notebook computer, or a personal computer.

According to various embodiments, the electronic device 201 may receive power from an external power source 205 . For example, the electronic device 201 may be connected to the external power source 205 through the power receiving terminal 207 . For example, the external power source may refer to a device capable of supplying power by wire or wirelessly. For example, the external power source 205 may include an external charger or adapter device that supplies power through a wire. For example, when the wired input plug of the external power source 205 is inserted into the power receiving terminal 207 , the electronic device 201 may receive power from the external power source 205 through the charging circuit 210 . have.

According to various embodiments, the power receiving terminal 207 may be implemented in various forms according to the type of an external power source (eg, an external charger). For example, the power receiving terminal 207 may be implemented as a DC cable, a USB 5-pin cable, or a USB TYPE-C cable terminal.

Although, in FIG. 2 , the power receiving terminal 207 is illustrated to be included in the charging circuit 210 , but this is only an example, and the technical spirit of the present invention may not be limited thereto. For example, the power receiving terminal 207 may function as a terminal connecting the external power source and the charging circuit 210 , and the location provided in the electronic device 201 may not be limited thereto.

According to various embodiments, the charging circuit 210 may include a charging control circuit 220 , a detection circuit 230 , and a battery 240 . The charging circuit 210 may receive power supplied from the external power source 205 , and may supply the received power to the load unit 250 or store it in the battery 240 . The charging circuit 210 supplies power received from the external power source 205 to the load unit 250 or power stored in the battery 240 under the control of the controller 260 (or CPU 270 ). It may be supplied to the rod unit 250 . For example, when the external power source 205 is connected to the charging circuit 210 through the power receiving terminal 207 , the charging circuit 210 transfers power supplied from the external power source 205 to the load unit 250 . can provide Alternatively, when the connection with the external power source 205 is released, the charging circuit 210 may provide the power stored in the battery 240 to the load unit 250 .

According to various embodiments, the charging control circuit 220 may control the overall operation of the charging circuit 210 . The charging control circuit 220 may check whether the external power source 205 is connected to the power receiving terminal 207 . Also, the charging control circuit 220 may transmit a signal indicating whether the external power source 205 is connected to the power receiving terminal 207 to the controller 260 .

According to various embodiments, the charging control circuit 220 may check the adapter voltage applied to the power receiving terminal 207 while receiving power from the external power source 205 connected to the power receiving terminal 207 . have. For example, the adapter voltage may mean a voltage of power supplied from the external power source 205 . The charging control circuit 220 may compare the first voltage corresponding to the adapter voltage with the reference voltage. For example, the first voltage may mean a voltage applied to the detection circuit by the adapter voltage.

According to various embodiments, when the first voltage is lower than the reference voltage, the charging control circuit 220 may check the adapter current corresponding to the power supplied by the power receiving terminal. For example, the adapter current may mean a current of power supplied from the external power source 205 . The charge control circuit 220 may use the detection circuit to determine whether the first voltage maintains a voltage lower than the reference voltage for a specified time when the adapter current is equal to or greater than the reference current. For example, the detection circuit 230 may be a circuit that performs a function to reduce the misrecognition of the connection state of the external power source 205 due to a phenomenon in which the adapter voltage is dropped due to a rise in the adapter current that is momentarily increased. have. For example, the detection circuit 230 may include a deglitch circuit.

According to various embodiments of the present disclosure, the charging control circuit 220 may determine whether the external power source 205 is connected to the power receiving terminal 207 according to the check result. The charging control circuit 220 may determine or confirm that the external power source 205 is connected to the power receiving terminal 207 when the first voltage rises again to above the reference voltage within a specified time. In addition, the charge control circuit 220, when the first voltage is maintained at a voltage lower than the reference voltage within a specified time, it can be determined or confirmed that the external power source 205 is in a state separated from the power receiving terminal 207. . The charging control circuit 220 may transmit a signal indicating the connection state of the external power source 205 to the controller 260 .

According to various embodiments, the load unit 250 may include a controller 260 and a CPU 270 . For example, the load unit 250 may include various electronic components receiving power from the charging circuit 210 . The controller 260 and/or the CPU 270 included in the load unit 250 receives a signal indicating whether the external power source 205 is connected to the power receiving terminal 207 from the charging control circuit 220 . can do. The controller 260 and/or the CPU 270 included in the load unit 250 performs the charging control circuit 220 on the basis of a signal indicating whether the external power source 205 is connected to the power receiving terminal 207 . ) may be transmitted (eg, a signal for controlling the power mode of the electronic device 201 ) to the charging control circuit 220 .

According to various embodiments, the controller 260 may be implemented as an embedded controller (EC) or a micro-controller unit (MCU). For example, the controller 260 is a processor that manages power of the electronic device 201 , and may control operations for a booting sequence, power management, and/or input device processing. According to various embodiments, the controller 260 may receive a signal indicating the connection state of the external power source 205 from the charge control circuit 220 . When a signal indicating a connection state is received, the controller 260 may transmit information about the corresponding signal to the CPU 270 . For example, when the controller 260 determines that the external power source 205 is connected to the power receiving terminal 207 , information indicating that the electronic device 201 is in a state in which power is supplied by the external power source 205 . may be transmitted to the CPU 270 . Alternatively, when the controller 260 determines that the external power source 205 is not connected to the power receiving terminal 207 , information indicating that the electronic device 201 is in a state in which power is supplied by the battery 240 . may be transmitted to the CPU 270 .

According to various embodiments, the CPU 270 may control the overall operation of the electronic device 201 . For example, the CPU 270 may determine a power mode in which the electronic device 201 operates based on a signal received from the controller 260 . For example, when receiving information indicating that power is being supplied by the external power source 205 , the CPU 270 may control the electronic device 201 to operate in the first power mode. For example, the first power mode may be a power mode using power supplied from the external power source 205 . For example, the electronic device 201 may be driven with relatively high performance according to the power supplied from the external power source 205 in the first power mode. Alternatively, when the CPU 270 receives information indicating that power is being supplied by the battery 240 without the external power source 205 , the CPU 270 may control the electronic device 201 to operate in the second power mode. have. For example, the second power mode may be a power mode using power supplied from the battery 240 . For example, the electronic device 201 may be driven with relatively low performance according to the power supplied from the battery 240 in the second power mode.

Meanwhile, in FIG. 2 , the controller 260 and the CPU 270 are illustrated as separate hardware, but the technical spirit of the present invention may not be limited thereto. For example, the controller 260 and the CPU 270 may be implemented as one piece of hardware (eg, a circuit chip).

Meanwhile, the following method of operating the electronic device may be performed by at least one of the charge control circuit 220 , the controller 260 , and the CPU 270 of FIG. 2 . However, hereinafter, it is assumed that the charging control circuit 220 performs an operation for convenience of description.

3 is a flowchart for describing a method of operating an electronic device according to various embodiments of the present disclosure;

Referring to FIG. 3 , according to various embodiments, in operation 301 , an external power source 205 may be input to a power receiving terminal 207 by a user. For example, the external power source (eg, external charger) 205 may be input to the power receiving terminal 207 through an output cable (eg, DC cable, USB cable) of the external power source 205 .

According to various embodiments, in operation 303 , the charge control circuit 220 may monitor the first voltage corresponding to the adapter voltage by the external power source 205 through the detection circuit 230 . For example, the first voltage may mean a voltage applied to the detection circuit 230 as the adapter voltage is applied to the power receiving terminal.

According to various embodiments, the charge control circuit 220 may compare the first voltage corresponding to the adapter voltage with the reference voltage through the detection circuit 230 . For example, the reference voltage may mean a voltage value serving as a reference for determining whether the external power source 205 is connected to the charge receiving terminal 207 . For example, the reference voltage may have a voltage value between the output voltage of the battery 240 and the output voltage of the external power source 205 . The reference voltage may be set by a user or automatically set by the controller 260 or the CPU 270 . For example, the reference voltage may be set through a USB power delivery (PD) negotiation process when the external power source 205 uses a USB power delivery (PD) technology. For example, when the external power source 205 uses USB PD technology, the external power source 205 may adjust the charging power (up to 100W) via a communication line (eg, a CC communication line). The charge control circuit 220 executes a USB PD negotiation process through an external power source 205 (eg, USB PD Source) and a communication line (eg, a CC communication line), and through the process The reference voltage and reference current can be flexibly adjusted. In this case, the power receiving terminal 207 may be a USB TYPE-C terminal capable of communication through a communication line (eg, a CC communication line).

According to various embodiments, in operation 305 , the charge control circuit 220 may check whether the first voltage corresponding to the adapter voltage is smaller than the reference voltage through the detection circuit 230 .

According to various embodiments, if the first voltage is not less than the reference voltage (NO in operation 305 ), the charging control circuit 220 may determine that the external power source 205 is connected to the power receiving terminal 207 . have. For example, when the external power source 205 transmits power using the USB TYPE-C, the charge control circuit 220 is the external power source ( 205) may be checked. In operation 315 , the electronic device 201 may be driven in the first power mode using power supplied from the external power source 205 based on a signal received from the charge control circuit 220 .

According to various embodiments, when the first voltage is less than the reference voltage (eg in operation 305 ), in operation 307 , the charge control circuit 220 may check the adapter current. That is, the charging control circuit 220 may not directly determine that the external power source 205 is connected to the power receiving terminal 207 based on the comparison result between the adapter voltage and the reference voltage. For example, since power (P) = current (I) * voltage (V), if the current instantaneously increases while the same amount of power is supplied, the voltage may decrease. Accordingly, the charging control circuit 220 may be set to check the adapter current because the adapter voltage (or the first voltage) may be dropped by the instantaneously increased current.

According to various embodiments, the charge control circuit 220 may compare the adapter current and the reference current. For example, the reference current may mean a current value serving as a reference for determining whether the external voltage source 205 is connected to the charge receiving terminal 207 . For example, the reference current may be set by a user or may be automatically set by the controller 260 or the CPU 270 .

According to various embodiments, in operation 309 , the charging control circuit 220 may determine whether the adapter current is equal to or greater than a reference current.

According to various embodiments, when it is determined that the adapter current is not equal to or greater than the reference current (No in operation 309 ), the charging control circuit 220 determines that the external power source 205 is not connected to the power receiving terminal 207 . can be judged as In operation 317 , the electronic device 201 may be driven in the second power mode using power supplied from the battery 240 based on a signal received from the charge control circuit 220 .

According to various embodiments, when it is determined that the adapter current is equal to or greater than the reference current (Yes in operation 309), in operation 311, the charge control circuit 220 performs a time delay function of the detection circuit for a specified time (eg, 100 μs). can be activated. For example, when it is determined that the adapter current is equal to or greater than the reference current, the charging control circuit 220 may delay output of a signal indicating a comparison result between the first voltage corresponding to the adapter voltage and the reference voltage for a specified time.

According to various embodiments, in operation 313 , the charge control circuit 220 may determine whether the first voltage corresponding to the adapter voltage is equal to or greater than the reference voltage after a specified time has elapsed. For example, the charge control circuit 220 may check whether the first voltage is equal to or greater than a reference voltage after a specified time has elapsed, and output a signal indicating a result of the check to the controller 260 .

According to various embodiments, when the first voltage corresponding to the adapter voltage is equal to or greater than the reference voltage (eg in operation 313 ), the charge control circuit 220 is in a state in which the external power source 205 is connected to the power receiving terminal 207 . can be judged as In operation 315 , the electronic device 201 may be driven in the first power mode using power supplied from the external power source 205 based on a signal received from the charge control circuit 220 .

According to various embodiments, if the first voltage corresponding to the adapter voltage is not equal to or greater than the reference voltage (No in operation 313 ), the charge control circuit 220 may cause the external power source 205 to be connected to the power receiving terminal 207 . It can be judged as non-existent. In operation 317 , the electronic device 201 may be driven in the second power mode using power supplied from the battery 240 based on a signal received from the charge control circuit 220 .

Through this, the electronic device 201 may reduce an erroneous recognition of the connection state of the external power source 205 even if the adapter voltage is reduced due to the instantaneously increasing adapter current.

4 is a block diagram illustrating a charging circuit included in an electronic device according to various embodiments of the present disclosure;

Referring to FIG. 4 , the charging circuit 210 may include a charging control circuit 420 , a detection circuit 430 , and a battery 240 . For example, the charge control circuit 420 may be implemented in the same or similar manner to the charge control circuit 220 of FIG. 2 . Also, the detection circuit 430 may be implemented in the same or similar manner to the detection circuit 230 of FIG. 2 .

According to various embodiments, the detection circuit 430 may include a current sensing circuit 432 , a comparator 434 , and a deglitch circuit 437 .

According to various embodiments, the first voltage V1 in which the adapter voltage VADP is divided by the first resistor R1 and the second resistor R2 is input as a first input value of the deglitch circuit 437 . can be For example, when the deglitch circuit 437 checks the first voltage V1 higher than the reference voltage VREF, the deglitch circuit 437 may disable the deglitch function regardless of the second input value. For example, the deglitch function may be a function of delaying the output of the deglitch circuit 437 for a specified time. The deglitch circuit 437 compares the first voltage with the reference voltage, and outputs a high level detection signal according to the comparison result (the first voltage is higher than the reference voltage) to the detection terminal ACDET of the charge control circuit 420 . can be output as In response to the high level detection signal, the charging control circuit 420 transmits a connection state signal (eg, high level ACOK) indicating that the external power source 205 is connected to the controller (or embedded controller (EC)) ( 260) can be transmitted.

According to various embodiments, when the deglitch circuit 437 determines that the first voltage V1 falls based on the reference voltage, the deglitch circuit 437 disables the deglitch function based on the second input value. It can be enabled or enabled. An operation for a case in which the first voltage V1 falls based on the reference voltage will be described below.

According to various embodiments, the current sensing circuit 432 may sense the adapter current IADP using voltages applied across the sensing resistor RS. The current sensing circuit 432 may output the adapter voltage VADP corresponding to the sensed adapter current IADP to the comparator 434 .

According to various embodiments, the current sensing circuit 432 may include a voltage sensing circuit. For example, the voltage sensing circuit may sense a voltage applied across the sensing resistor RS. The current sensing circuit 432 may sense the adapter current IADP using a voltage applied across the sensing resistor RS.

According to various embodiments, the comparator 434 receives the adapter current, the specified voltage VCC, and the reference voltage VREF determined by the third resistor R3 and the fourth resistor R4 as input, and selects the input voltages. A first signal representing a comparison result (eg, the adapter voltage VADP and the reference voltage VREF) may be output to the deglitch circuit 437 . For example, the comparator 434 may output a high level first signal when the adapter voltage VADP is equal to or greater than the reference voltage VREF. Alternatively, the comparator 434 may output the first signal of a low level when the adapter voltage VADP is less than the reference voltage VREF.

According to various embodiments, the first voltage V1 of the deglitch circuit 437 may be input as a first input value, and the first signal may be input as a second input value. The deglitch circuit 437 may enable or disable the deglitch function based on the first voltage V1 and the first signal. For example, when the first voltage V1 is input (eg, the external power source 205 is connected), the deglitch circuit 437 may disable the deglitch function and ignore the first signal. That is, the deglitch circuit 437 may output a signal corresponding to the first voltage V1 without considering the first signal. Alternatively, the deglitch circuit 437 enables the deglitch function based on the first signal when the first voltage V1 is not input (eg, the external power source 205 is not connected). , a signal corresponding to the first signal may be output. For example, when the first signal is at a low level, the deglitch circuit 437 may disable the deglitch function and output a low level signal. When the first signal is at a high level, the deglitch circuit 437 may enable the deglitch function and output a high level signal for a predetermined period of time.

According to various embodiments, the deglitch circuit 437 may disable the deglitch function when the first signal is at a low level. In this case, since the first voltage V1 is lower than the reference voltage, the deglitch circuit 437 may output a low level detection signal to the detection terminal ACDET of the charge control circuit 220 . In response to the low-level detection signal, the charging control circuit 420 transmits a connection state signal (eg, low-level ACOK) indicating that the external power source 205 is disconnected to the controller (or embedded controller (EC)) ( 260) can be transmitted. According to another embodiment, when the electronic device 201 does not include the controller 260 , the charging control circuit 420 provides a connection state signal (eg, low level ACOK) indicating that the external power source 205 is disconnected. ) to the CPU 270 .

According to various embodiments, when the first signal is a high level signal, the deglitch circuit 437 may enable the deglitch function for a specified time. At this time, the deglitch circuit 437, although the first voltage V1 is lower than the reference voltage, enables the deglitch function for a specified time and transmits a high level detection signal to the detection terminal ACDET of the charge control circuit 220 . ) can be printed. When it is confirmed that the first voltage V1 has risen above the reference voltage within a specified time, the deglitch circuit 437 may output a high level detection signal to the detection terminal ACDET of the charge control circuit 220 . On the other hand, if it is confirmed that the first voltage V1 does not rise above the reference voltage within the specified time, the deglitch circuit 437 transmits a low level detection signal to the detection terminal ACDET of the charge control circuit 220 . can be printed out. For example, the charging control circuit 420 transmits a connection state signal ACOK indicating that the external power source 205 is connected or disconnected to a controller (or an embedded controller EC) in response to a high-level or low-level detection signal. ) 260 . According to another embodiment, when the electronic device 201 does not include the controller 260 , the charge control circuit 420 may generate a connection state signal (eg, a low level) indicating that the external power source 205 is connected or disconnected. ACOK) to the CPU 270 .

According to various embodiments, when the low level connection state signal ACOK is received, the controller 260 may transmit information indicating that the external power source 205 is in a disconnected state to the CPU 270 . In this case, the CPU 270 may drive the electronic device in the second power mode. Alternatively, when the high level connection state signal ACOK is received, the controller 260 may transmit information indicating that the external power source 205 is connected to the CPU 270 . In this case, the CPU 270 may drive the electronic device in the first power mode.

According to another embodiment, the charge control circuit 420 may transmit the connection state signal AC0K to the controller 260 only when a high level detection signal is received. That is, when the low level detection signal is received, the charge control circuit 420 may not transmit the connection state signal AC0K to the controller 260 . The controller 260 may transmit information indicating that the external power source 205 is connected to the CPU 270 only when the connection state signal ACOK is received. Also, when the connection state signal ACOK is not received, the controller 260 may transmit information indicating that the external power source 205 is in a disconnected state to the CPU 270 . According to another embodiment, the controller 260 or the CPU 270 receives a signal indicating a connection state through a communication line (eg, a CC communication line) of the USB PD, and the external power source 205 is separated or connected. Information indicating the status may be received.

5 is a block diagram illustrating a charging circuit included in an electronic device according to various embodiments of the present disclosure;

Referring to FIG. 5 , the charging circuit 210 may include a charging control circuit 520 , a detection circuit 530 , and a battery 240 . For example, the charge control circuit 520 may include a current sensing circuit comparator therein when compared to the charge control circuit 42 of FIG. 4 . Also, the detection circuit 530 may not include a current sensing circuit and a comparator when compared to the detection circuit 430 of FIG. 4 . Compared to the charging circuit 210 of FIG. 4 , the charging circuit 210 of FIG. 5 may perform substantially the same function except for a structural difference between the charging control circuit 520 and the detection circuit 530 . .

According to various embodiments, the first voltage V1 in which the adapter voltage VADP is divided by the first resistor R1 and the second resistor R2 is input as a first input value of the deglitch circuit 537 . can be For example, when the deglitch circuit 537 determines that the first voltage V1 has risen based on the reference voltage VREF, the deglitch circuit 537 disables the deglitch function regardless of the second input value. can The deglitch circuit 537 compares the first voltage with the reference voltage, and sends a high level detection signal to the detection terminal ACDET of the charge control circuit 520 according to the comparison result (the first voltage is higher than the reference voltage) can be output as In response to the high level detection signal, the charging control circuit 520 transmits a connection state signal (eg, high level ACOK) indicating that the external power source 205 is connected to the controller (or embedded controller (EC)) ( 260) can be transmitted.

According to various embodiments, when the deglitch circuit 537 determines that the first voltage V1 falls based on the reference voltage, the deglitch circuit 537 disables the deglitch function based on the second input value. It can be enabled or enabled. An operation for a case in which the first voltage V1 falls based on the reference voltage will be described below.

According to various embodiments, the charging control circuit 520 may sense the adapter current IADP flowing through the sensing resistor RS by using a current sensing circuit included in the charging control circuit 520 . The charge control circuit 520 may output the adapter voltage VADP corresponding to the sensed adapter current IADP to the first input terminal CIN of the comparator included in the charge control circuit 520 .

According to various embodiments, the charge control circuit 520 may compare the adapter voltage VADP with the reference voltage VREF using a comparator included in the charge control circuit 520 . The charge control circuit 520 may output a first signal indicating a comparison result to the deglitch circuit 537 through the output terminal COUT. For example, when the adapter voltage VADP is equal to or greater than the reference voltage VREF, the charge control circuit 520 may output the first signal having a high level. Alternatively, the comparator 434 may output the first signal of a low level when the adapter voltage VADP is less than the reference voltage VREF.

According to various embodiments, the first voltage V1 of the deglitch circuit 537 may be input as a first input value, and a first signal may be input as a second input value. The deglitch circuit 437 may enable or disable the deglitch function based on the first voltage V1 and the first signal. The operation of the deglitch circuit 537 related thereto may be implemented in the same manner as the operation of the deglitch circuit 437 described with reference to FIG. 4 .

6 is a flowchart illustrating an operation in which an electronic device determines whether an external power source is connected to a power reception terminal using a detection circuit according to various embodiments of the present disclosure; 8 is a diagram for describing output signals of a deglitch circuit and a charge control circuit according to various embodiments of the present disclosure;

Referring to FIG. 6 , the following operations may be operations of the electronic device 201 while the external power source 205 is connected to the power reception terminal 207 .

According to various embodiments, in operation 601 , an external power source (eg, an external charger) 205 may be input to the power receiving terminal 207 . For example, the external power source (eg, external charger) 205 may be input to the power receiving terminal 207 through an output cable (eg, DC cable, USB cable) of the external power source 205 .

According to various embodiments of the present disclosure, in operation 603 , the charge control circuit 220 may check an increase in the adapter voltage VADP by the external power source 205 through the detection circuit 230 . For example, the first voltage V1 in which the adapter voltage VADP is divided by the first resistor R1 and the second resistor R2 is a deglitch circuit 437 or 537 included in the detection circuit 230) can be entered in Based on the first voltage V1 being input to the deglitch circuit 437 or 537), the deglitch circuit 437 or 537 prevents the first voltage V1 from rising based on the reference voltage VREF. can be checked

According to various embodiments, if it is confirmed that the first voltage V1 rises based on the reference voltage VREF, in operation 605 , the deglitch circuit 437 or 537 may disable the deglitch function. . Also, in operation 605 , the deglitch circuit 437 or 537 may output a high level detection signal to the detection terminal ACDET of the charge control circuit 220 as shown in FIG. 8 .

According to various embodiments, in operation 607 , the charging control circuit 220 may output a high-level connection state signal ACOK to the controller 260 (or the embedded controller EC) as shown in FIG. 8 . have. In operation 609 , the CPU 270 performs the electronic device 201 based on information received from the controller 260 (eg, information indicating a state in which the external power source 205 is connected to the power receiving terminal 207 ). may be driven in the first power mode.

Through this, the electronic device 201 may check a state in which the external power source 205 is connected to the power receiving terminal 207 .

7 is a flowchart illustrating an operation in which an electronic device determines whether an external power source is connected to a power receiving terminal using a detection circuit according to various embodiments of the present disclosure; 9 is a diagram for describing output signals of a comparator, a deglitch circuit, and a charge control circuit according to an instantaneous current according to various embodiments of the present disclosure;

Referring to FIG. 7 , the following operation is performed while the external power source 205 is connected to the power receiving terminal 207 , the adapter current IADP is momentarily increased or the external power source 205 is connected to the power receiving terminal. These may be operations of the electronic device 201 when separated.

According to various embodiments, in operation 701 , an external power source (eg, an external charger) 205 may be input to the power receiving terminal 207 . For example, an external power source (eg, an external charger) 205 may be introduced into the power receiving terminal 207 through a plug.

According to various embodiments of the present disclosure, in operation 703 , the charge control circuit 220 may check a drop in the adapter voltage VADP by the external power source 205 through the detection circuit 230 . For example, the first voltage V1 in which the adapter voltage VADP is divided by the first resistor R1 and the second resistor R2 is a deglitch circuit 437 or 537 included in the detection circuit 230) can be entered in Based on the first voltage V1 being input to the deglitch circuit 437 or 537), the deglitch circuit 437 or 537 prevents the first voltage V1 from falling based on the reference voltage VREF. can be checked At this time, the charge control circuit 220 performs the following operation to determine whether the fall of the adapter voltage VADP is caused by the instantaneous rise of the adapter current IADP or the external power source 205 is connected to the power receiving terminal from the power receiving terminal. It can be confirmed whether it is caused by separation.

According to various embodiments, the detection circuit 230 may compare the first voltage V1 corresponding to the adapter voltage VADP with the reference voltage VREF. In operation 705 , the detection circuit 230 may determine whether the adapter voltage VADP is less than the reference voltage VREF.

According to various embodiments, if the first voltage V1 is not smaller than the reference voltage VREF (No in operation 705 ), the charge control circuit 220 may provide the external power source 205 to the power receiving terminal 207 . It can be judged to be in a connected state. For example, when the first voltage V1 is not less than the reference voltage VREF, the charge control circuit 220 may receive a high level detection signal from the detection circuit 230 . In operation 715 , the charge control circuit 220 may output a high level connection state signal ACOK to the controller 260 . In operation 717 , the CPU 270 receives connection state information (eg, information indicating a state in which the external power source 205 is connected to the power receiving terminal 207 ) from the controller 260 , and the received connection state information Based on , the electronic device 201 may be driven in the first power mode using power supplied from the external power source 205 .

According to various embodiments, when the first voltage V1 is less than the reference voltage VREF (eg in operation 705 ), in operation 707 , the charge control circuit 220 or the detection circuit 230 is the adapter current IADP ) can be checked.

According to various embodiments, the charge control circuit 220 or the detection circuit 230 may compare the adapter current IADP with the reference current IREF. In operation 709 , the charge control circuit 220 or the detection circuit 230 may determine whether the adapter current IADP is equal to or greater than the reference current IREF.

According to various embodiments, if it is determined that the adapter current IADP is not equal to or greater than the reference current IREF (NO in operation 709), the deglitch circuit 437 or 537 included in the detection circuit 230 in operation 719 is You can disable the deglitch function. Referring to FIG. 9 , the deglitch circuit 437 or 537 may receive the first low-level signal from the comparator 424 and output the low-level detection signal to the charge control circuit 220 . In operation 721 , the charging control circuit 220 may output a low-level connection state signal ACOK to the controller 260 , as shown in FIG. 9 . In operation 723 , the CPU 270 receives connection state information (eg, information indicating a state in which the external power source 205 is disconnected from the power reception terminal 207 ) from the controller 260 , and the received connection state Based on the information, the electronic device 201 may be driven in the second power mode using power supplied from the battery 240 .

According to various embodiments, if it is determined that the adapter current IADP is equal to or greater than the reference current IREF (example of operation 709), in operation 711, the deglitch circuit 437 or 537 included in the detection circuit 230 is, The deglitch function may be enabled for a specified time, and a high level detection signal may be output to the charge control circuit 220 (or the detection terminal ACDET of the charge control circuit) during the specified time. For example, referring to FIG. 9 , the deglitch circuit 437 or 537 may receive a high level first signal from the comparator 424 and output a high level detection signal for a specified time. The detection circuit 230 may check the first voltage V1 while outputting the detection signal for a specified time. Also, the detection circuit 230 may compare the first voltage V1 with the reference voltage VREF for a specified time period.

According to various embodiments, in operation 713 , the detection circuit 230 may determine whether the first voltage V1 rises above the reference voltage VREF for a specified time.

According to various embodiments, when the first voltage V1 rises to the reference voltage VREF (eg in operation 713 ), the charge control circuit 220 may receive a high level detection signal from the detection circuit 230 . have. In operation 715 , the charging control circuit 220 may output a high level connection state signal ACOK to the controller 260 as shown in FIG. 9 . In operation 717 , the CPU 270 receives connection state information (eg, information indicating a state in which the external power source 205 is connected to the power receiving terminal 207 ) from the controller 260 , and the received connection state information Based on the , the electronic device 201 may be driven in the first power mode using power supplied from the external power source 205 .

According to various embodiments, when the first voltage V1 is maintained below the reference voltage VREF (No in operation 713 ), the detection circuit 230 generates a low-level detection signal after a specified period of time to the charge control circuit 220 . ) can be printed. In operation 721 , the charging control circuit 220 may output a low-level connection state signal ACOK to the controller 260 , as shown in FIG. 9 . In operation 723 , the CPU 270 receives connection state information (eg, information indicating a state in which the external power source 205 is disconnected from the power reception terminal 207 ) from the controller 260 , and the received connection state Based on the information, the electronic device 201 may be driven in the second power mode using power supplied from the battery 240 .

Through this, the electronic device 201 may reduce an erroneous recognition of the connection state of the external power source 205 even if the adapter voltage is reduced due to the instantaneously increasing adapter current.

10A is a diagram for describing an operation of misrecognizing whether an external power source is connected to a power receiving terminal by an instantaneous current by an electronic device not including a detection circuit according to various embodiments of the present disclosure; 10B is a diagram for describing an operation of checking whether an external power source is connected to a power receiving terminal by an instantaneous current by an electronic device including a detection circuit according to various embodiments of the present disclosure;

Referring to FIGS. 10A and 10B , according to various embodiments, the electronic device 201 (eg, the electronic device 201 of FIG. 2 ) performs after the external power source 205 is connected to the power receiving terminal 207 . , when the first voltage V1 applied to the deglitch circuit 437 or 537 included in the detection circuit 230 is equal to or greater than the reference voltage VREF, the connection of the external power source 205 may be confirmed. In this case, the electronic device 201 may be driven in the first power mode based on checking the connection of the external power source 205 .

According to various embodiments of the present disclosure, referring to FIG. 10A , the electronic device 201 may identify the separation of the external power source 205 based on a drop in the adapter voltage due to the adapter current greater than or equal to the instantaneously increased reference current. However, in reality, the external power source 205 may not be separated from the power receiving terminal 207 . In this case, the electronic device 201 may be driven in the second power mode based on the confirmation of the separation of the external power source 205 . Thereafter, when the first voltage V1 rises above the reference voltage again, the electronic device 201 may confirm that the external power source 205 is connected to the power receiving terminal 207 . In this case, the electronic device 201 may be driven again in the first power mode based on checking the connection of the external power source 205 . That is, the electronic device 201 may perform an unnecessary power mode change for a specific time t.

According to various embodiments of the present disclosure, referring to FIG. 10B , the electronic device 201 may identify the separation of the external power source 205 based on a drop in the adapter voltage due to the adapter current greater than or equal to the instantaneously increased reference current. However, in reality, the external power source 205 may not be separated from the power receiving terminal 207 . In this case, the electronic device 201 may check the adapter current IADP by using the detection circuit 230 based on checking the disconnection of the external power source 205 . When the adapter current IADP is equal to or greater than the reference current IREF, the electronic device 201 inputs a high-level signal to the detection terminal ACDET of the charge control circuit 220 to immediately disconnect the external power source 205 . You may not decide that it is. That is, the electronic device 201 may be driven in the first power mode without changing the power mode for a specific time t. Thereafter, when the first voltage V1 rises above the reference voltage again, the electronic device 201 may confirm that the external power source 205 is connected to (or not disconnected from) the power receiving terminal 207 . In this case, the electronic device 201 may continue to be driven in the first power mode based on checking the connection of the external power source 205 . That is, the electronic device 201 may prevent an unnecessary power mode change for a specific time t. Thereafter, using the detection circuit 230 , the electronic device 201 uses the detection circuit 230 to determine if the first voltage V1 is lower than the reference voltage VREF and the adapter current IADP is less than the reference power, the external power source 205 . It can be confirmed that it is separated from the power receiving terminal 207 .

The electronic device 201 according to various embodiments of the present disclosure includes a charging circuit 210 and a controller 260 or 270 , and the charging circuit includes a power receiving terminal configured to connect a battery 240 and an external charger 205 to each other. 207, a charging control circuit 220 connected to the power receiving terminal and the battery, and a detecting circuit 230, wherein the charging control circuit receives power from the external charger connected to the power receiving terminal In the state, through the detection circuit, the adapter voltage applied to the power receiving terminal is checked, and through the detection circuit, if the first voltage corresponding to the adapter voltage is lower than the reference voltage, it is supplied by the power receiving terminal Check the adapter current corresponding to the applied power, and if the adapter current is equal to or greater than the reference current through the detection circuit, check whether the first voltage maintains a voltage lower than the reference voltage for a specified time, according to the check result It may be set to check whether the external charger is connected to the power receiving terminal.

According to various embodiments, the charging control circuit may be configured to determine that the external charger is connected to the power receiving terminal when the first voltage rises above the reference voltage within the specified time.

According to various embodiments, when it is determined by the charging control circuit that the external charger is connected to the power receiving terminal, the controller drives the electronic device in a first power mode using power supplied from the external charger. can be set to do.

According to various embodiments, the charging control circuit may be configured to determine that the external charger is disconnected from the power receiving terminal when the first voltage is maintained at a voltage lower than the reference voltage within the specified time. .

According to various embodiments, when it is determined by the charging control circuit that the external charger is connected to the power receiving terminal, the controller drives the electronic device in a second power mode using power supplied from the battery. can be set to

According to various embodiments, the detection circuit includes a current sensing circuit, a comparator, and a deglitch circuit, the current sensing circuit senses the current, and the comparator, the sensed current and the reference current, and output a first signal to the deglitch circuit according to the comparison result, wherein the deglitch circuit indicates a connection state of the external charger based on the first voltage and the first signal It may be set to output a detection signal to the charge control circuit.

According to various embodiments, the deglitch circuit may be configured to output the detection signal corresponding to the high level for the specified time.

According to various embodiments of the present disclosure, the deglitch circuit may be configured to output the detection signal corresponding to the high level when the first voltage rises above the reference voltage after the specified time.

According to various embodiments, the deglitch circuit may be configured to output the detection signal corresponding to a low level when the first voltage is lower than the reference voltage after the specified time.

According to various embodiments, the charge control circuit includes a current sensing circuit and a comparator, the detection circuit includes a deglitch circuit, the current sensing circuit senses the current, and the comparator, The current and the reference current are compared, and a first signal is output to the deglitch circuit according to the comparison result, and the deglitch circuit is configured to transmit a detection signal based on the first voltage and the first signal to the charge control circuit It can be set to output as .

According to various embodiments, the deglitch circuit may be configured to output the detection signal corresponding to the high level for the specified time.

According to various embodiments, the charging control circuit checks that the adapter voltage applied to the power receiving terminal increases by the power supplied from the external charger, and based on the increase of the adapter voltage, the adapter voltage It may be configured to check whether the voltage is equal to or greater than the reference voltage, and to determine that the external charger is connected to the power receiving terminal when the adapter voltage is equal to or greater than the reference voltage.

According to various embodiments, the reference voltage may have a voltage value between the output voltage of the battery and the output voltage of the external charger.

In the method of operating the electronic device 201 according to various embodiments of the present disclosure, in a state in which power is received from the external charger 205 connected to the power receiving terminal 207 of the electronic device, through the detection circuit, the power receiving terminal When the first voltage corresponding to the adapter voltage is lower than the reference voltage through the detection circuit 230 of the electronic device, the adapter corresponding to the power supplied by the power receiving terminal checking a current, checking whether the first voltage maintains a voltage lower than the reference voltage for a specified time when the adapter current is equal to or greater than a reference current through the detection circuit, and receiving the power according to a check result It may include an operation of checking whether the external charger is connected to the terminal.

According to various embodiments, the operation of determining whether the external charger is connected to the power receiving terminal may include, when the first voltage rises above the reference voltage within the specified time, the external charger is connected to the power receiving terminal. It may include an operation of determining the state connected to.

According to various embodiments of the present disclosure, the method of operating the electronic device includes, when it is determined that the external charger is connected to the power receiving terminal, driving the electronic device in a first power mode using power supplied from the external charger may further include.

According to various embodiments, the operation of determining whether the external charger is connected to the power receiving terminal may include, if the first voltage is maintained at a voltage lower than the reference voltage within the specified time, the external charger may generate the power It may include an operation of determining that the state is separated from the receiving terminal.

According to various embodiments of the present disclosure, the method of operating the electronic device includes, when it is determined that the external charger is connected to the power receiving terminal, driving the electronic device in a second power mode using power supplied from the battery. may include more.

According to various embodiments of the present disclosure, the method of operating the electronic device includes an operation of confirming that the adapter voltage applied to the power receiving terminal increases by the power supplied from the external charger, based on the increase of the adapter voltage, The method may further include determining whether the adapter voltage is equal to or greater than the reference voltage, and determining that the external charger is connected to the power receiving terminal when the adapter voltage is equal to or greater than the reference voltage.

An electronic device according to various embodiments of the present disclosure includes a charging circuit and a controller, wherein the charging circuit includes a battery, a power receiving terminal configured to be connected to an external charger, a charging control circuit connected to the power receiving terminal and the battery, and a detection circuit In a state in which the charging control circuit receives power from the external charger connected to the power receiving terminal, through the detection circuit, the adapter voltage applied to the power receiving terminal is checked, and the detection circuit is activated. through, if the first voltage corresponding to the adapter voltage is lower than the reference voltage, check the adapter current corresponding to the power supplied by the power receiving terminal, and through the detection circuit, if the adapter current is equal to or greater than the reference current, It is checked whether the first voltage maintains a voltage lower than the reference voltage for a specified time, and when the first voltage rises above the reference voltage within the specified time, it is confirmed that the external charger is connected to the power receiving terminal and, when the first voltage is maintained at a voltage lower than the reference voltage within the specified time, it is set to check that the external charger is disconnected from the power receiving terminal, and the detection circuit includes a current sensing circuit, a comparator ( comparator), and a deglitch circuit, wherein the current sensing circuit senses the current, the comparator compares the sensed current with the reference current, and generates a first signal according to the comparison result. output to a deglitch circuit, wherein the deglitch circuit may be configured to output a detection signal to the charge control circuit based on the first voltage and the first signal.

201: electronic device
205: external power source
207: power receiving terminal
210: charging circuit
220: charge control circuit
230: detection circuit
240: battery
250: rod part
260: controller
270: CPU

Claims (20)

In an electronic device,
charging circuit; and
including a controller;
The charging circuit is
battery;
a power receiving terminal set to be connected to an external charger;
a charging control circuit connected to the power receiving terminal and the battery; and
a detection circuit, wherein the charge control circuit comprises:
Checking the adapter voltage applied to the power receiving terminal while receiving power from the external charger connected to the power receiving terminal through the detection circuit,
through the detection circuit, if the first voltage corresponding to the adapter voltage is lower than the reference voltage, check the adapter current corresponding to the power supplied by the power receiving terminal;
through the detection circuit, if the adapter current is greater than or equal to a reference current, check whether the first voltage maintains a voltage lower than the reference voltage for a specified time;
An electronic device configured to check whether the external charger is connected to the power receiving terminal according to a check result. According to claim 1, wherein the charge control circuit,
an electronic device configured to determine that the external charger is connected to the power receiving terminal when the first voltage rises above the reference voltage within the specified time. According to claim 2, wherein the controller,
An electronic device configured to drive the electronic device in a first power mode using power supplied from the external charger when it is determined by the charging control circuit that the external charger is connected to the power receiving terminal. According to claim 1, wherein the charge control circuit,
The electronic device is configured to determine that the external charger is disconnected from the power receiving terminal when the first voltage is maintained at a voltage lower than the reference voltage within the specified time. The method of claim 4, wherein the controller,
An electronic device configured to drive the electronic device in a second power mode using power supplied from the battery when it is determined by the charging control circuit that the external charger is connected to the power receiving terminal. According to claim 1,
The detection circuit includes a current sensing circuit, a comparator, and a deglitch circuit,
The power sensing circuit senses the current,
The comparator compares the sensed current with the reference current, and outputs a first signal to the deglitch circuit according to the comparison result,
The deglitch circuit is configured to output a detection signal indicating a connection state of the external charger to the charging control circuit based on the first voltage and the first signal. 7. The method of claim 6,
The deglitch circuit is configured to output the detection signal corresponding to a high level for the specified time period. 8. The method of claim 7,
The deglitch circuit is configured to output the detection signal corresponding to the high level when the first voltage rises above the reference voltage after the specified time period. 8. The method of claim 7,
The deglitch circuit is configured to output the detection signal corresponding to a low level when the first voltage is lower than the reference voltage after the specified time. According to claim 1,
the charge control circuit includes a current sensing circuit and a comparator, the detection circuit includes a deglitch circuit,
The power sensing circuit senses the current,
The comparator compares the sensed current with the reference current, and outputs a first signal to the deglitch circuit according to the comparison result,
The deglitch circuit is configured to output a detection signal to the charge control circuit based on the first voltage and the first signal. 11. The method of claim 10,
The deglitch circuit is configured to output the detection signal corresponding to a high level for the specified time period. According to claim 1, wherein the charge control circuit,
It is confirmed that the adapter voltage applied to the power receiving terminal is increased by the power supplied from the external charger,
Based on the rise in the adapter voltage, check whether the adapter voltage is equal to or greater than the reference voltage,
An electronic device configured to determine that the external charger is connected to the power receiving terminal when the adapter voltage is equal to or greater than the reference voltage. According to claim 1,
The reference voltage is an electronic device having a voltage value between an output voltage of the battery and an output voltage of the external charger. A method of operating an electronic device, comprising:
checking an adapter voltage applied to the power receiving terminal while receiving power from an external charger connected to the power receiving terminal of the electronic device;
checking, through the detection circuit of the electronic device, an adapter current corresponding to the power supplied by the power receiving terminal when the first voltage corresponding to the adapter voltage is lower than a reference voltage;
through the detection circuit, if the adapter current is equal to or greater than a reference current, checking whether the first voltage maintains a voltage lower than the reference voltage for a specified time; and
and determining whether the external charger is connected to the power receiving terminal according to a check result. The method of claim 14, wherein the operation of determining whether the external charger is connected to the power receiving terminal comprises:
and determining that the external charger is connected to the power receiving terminal when the first voltage rises above the reference voltage within the specified time. 16. The method of claim 15,
and driving the electronic device in a first power mode using power supplied from the external charger when it is determined that the external charger is connected to the power receiving terminal. The method of claim 14, wherein the operation of determining whether the external charger is connected to the power receiving terminal comprises:
and determining that the external charger is disconnected from the power receiving terminal when the first voltage is maintained at a voltage lower than the reference voltage within the specified time. 18. The method of claim 17,
and driving the electronic device in a second power mode using power supplied from the battery when it is determined that the external charger is connected to the power receiving terminal. 15. The method of claim 14,
confirming that the adapter voltage applied to the power receiving terminal is increased by the power supplied from the external charger;
checking whether the adapter voltage is greater than or equal to the reference voltage based on the rise in the adapter voltage; and
and determining that the external charger is connected to the power receiving terminal when the adapter voltage is equal to or greater than the reference voltage. In an electronic device,
charging circuit; and
including a controller;
The charging circuit is
battery;
a power receiving terminal set to be connected to an external charger;
a charging control circuit connected to the power receiving terminal and the battery; and
a detection circuit, wherein the charge control circuit comprises:
Checking the adapter voltage applied to the power receiving terminal while receiving power from the external charger connected to the power receiving terminal through the detection circuit,
through the detection circuit, if the first voltage corresponding to the adapter voltage is lower than the reference voltage, check the adapter current corresponding to the power supplied by the power receiving terminal;
through the detection circuit, if the adapter current is greater than or equal to a reference current, check whether the first voltage maintains a voltage lower than the reference voltage for a specified time;
If the first voltage rises above the reference voltage within the specified time, it is confirmed that the external charger is connected to the power receiving terminal,
If the first voltage is maintained at a voltage lower than the reference voltage within the specified time, the external charger is set to confirm that it is disconnected from the power receiving terminal,
The detection circuit includes a current sensing circuit, a comparator, and a deglitch circuit,
The current sensing circuit senses the current,
The comparator compares the sensed current with the reference current, and outputs a first signal to the deglitch circuit according to the comparison result,
The deglitch circuit is configured to output a detection signal indicating a connection state of the external charger to the charging control circuit based on the first voltage and the first signal.

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