CN114665703A - Power supply circuit, voltage adjusting method, electronic device, and storage medium - Google Patents
Power supply circuit, voltage adjusting method, electronic device, and storage medium Download PDFInfo
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- CN114665703A CN114665703A CN202210224647.7A CN202210224647A CN114665703A CN 114665703 A CN114665703 A CN 114665703A CN 202210224647 A CN202210224647 A CN 202210224647A CN 114665703 A CN114665703 A CN 114665703A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
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Abstract
The application provides a power supply circuit, a voltage adjusting method, an electronic device and a storage medium. The voltage regulating circuit is used for regulating the power supply voltage input by the power supply to obtain a regulated voltage; the voltage comparison circuit is used for comparing the first voltage with the regulating voltage to output a first target voltage and is also used for comparing the second voltage with the regulating voltage to output a second target voltage; the control circuit is used for controlling the voltage regulating circuit to regulate the output regulated voltage when the first target voltage or the second target voltage does not accord with the preset voltage condition, so that the first target voltage and the second target voltage accord with the preset voltage condition along with the regulation of the regulated voltage. The power supply stability can be effectively enhanced.
Description
Technical Field
The present disclosure relates to the field of electronic devices, and in particular, to a power supply circuit, a voltage adjustment method, an electronic device, and a storage medium.
Background
With the development of electronic technology, the functions and performance of electronic equipment are greatly enhanced, and the control of a single board is developed to a multi-core processor. However, a Central Processing Unit (CPU) is affected by power supply voltage fluctuation when operating, for example, the processor is easily burned or related circuits are damaged due to too high fluctuation voltage, and therefore, the power supply voltage of the circuits needs to be monitored and adjusted. Currently, the supply voltage is typically sampled and monitored by Analog-to-Digital Converter (ADC) circuitry. However, the sampling method using a dedicated ADC circuit is difficult to implement, the circuit cost is high, and the stability of the supply voltage cannot be effectively maintained.
Disclosure of Invention
The present application provides a power supply circuit, which is designed to be a low-cost and easy-to-implement power supply circuit, and can effectively enhance the power supply stability.
In a first aspect, the present application provides a power supply circuit comprising:
the voltage division circuit is connected with a power supply and divides power supply voltage input by the power supply to obtain a first voltage and a second voltage;
the voltage regulating circuit is connected with the power supply and is used for regulating the power supply voltage input by the power supply to obtain a regulated voltage;
the voltage comparison circuit is connected with the voltage division circuit and the voltage regulation circuit and is used for comparing the first voltage with the regulation voltage to output a first target voltage, and the voltage comparison circuit is also used for comparing the second voltage with the regulation voltage to output a second target voltage;
a control circuit connected with the voltage comparison circuit to receive the first target voltage and the second target voltage; the control circuit is also connected with the control end of the voltage regulating circuit;
the control circuit is used for controlling the voltage regulating circuit to regulate the output regulated voltage when the first target voltage or the second target voltage does not accord with a preset voltage condition, so that the first target voltage and the second target voltage accord with the preset voltage condition along with the regulation of the regulated voltage.
In one embodiment, the voltage comparison circuit includes a first comparator and a second comparator;
a first input end of the first comparator is connected with a first output end of the voltage division circuit so as to receive the first voltage; a second input end of the first comparator is connected with an output end of the voltage regulating circuit so as to receive the regulated voltage; the first comparator is used for comparing the first voltage with the regulating voltage to output a first target voltage;
a first input end of the second comparator is connected with a second output end of the voltage division circuit so as to receive the second voltage; a second input end of the second comparator is connected with the output end of the voltage regulating circuit so as to receive the regulated voltage; the second comparator is used for comparing the second voltage with the regulated voltage to output a second target voltage.
In one embodiment, the first input terminal of the first comparator is an inverting input terminal, and the second input terminal of the first comparator is a non-inverting input terminal; the first input end of the second comparator is a positive phase input end, and the second input end of the second comparator is an inverted phase input end.
In one embodiment, the voltage regulating circuit comprises at least one adjustable resistor;
the control circuit is connected to the control end of at least one adjustable resistor and used for adjusting the resistance value of at least one adjustable resistor according to the first target voltage and the second target voltage, so that the adjusting voltage output by the voltage adjusting circuit is adjusted.
In one embodiment, a circuit node associated with the adjustable resistor is used as an output terminal of the voltage regulating circuit, and the output terminal of the voltage regulating circuit is used for outputting the regulated voltage.
In one embodiment, the voltage regulating circuit comprises a first adjustable resistor and a second adjustable resistor; the first end of the first adjustable resistor is connected with the power supply, the second end of the first adjustable resistor is connected with the first end of the second adjustable resistor, and the second end of the second adjustable resistor is grounded;
the control circuit is connected to the control ends of the first adjustable resistor and the second adjustable resistor; and a circuit node between the second end of the first adjustable resistor and the first end of the second adjustable resistor is used as an output end of the voltage regulating circuit.
In one embodiment, the voltage dividing circuit comprises a first voltage dividing resistor, a second voltage dividing resistor and a third voltage dividing resistor; a first end of the first voltage-dividing resistor is connected with the power supply, a second end of the first voltage-dividing resistor is connected with a first end of the second voltage-dividing resistor, a second end of the second voltage-dividing resistor is connected with a first end of the third voltage-dividing resistor, and a second end of the third voltage-dividing resistor is grounded;
a circuit node between a second end of the first voltage-dividing resistor and a first end of the second voltage-dividing resistor is used as a first output end of the voltage-dividing circuit to output the first voltage; a circuit node between the second terminal of the second voltage-dividing resistor and the first terminal of the third voltage-dividing resistor serves as a second output terminal of the voltage-dividing circuit to output the second voltage.
In one embodiment, the power supply circuit further comprises a voltage stabilizing circuit;
the voltage stabilizing circuit is connected between the voltage dividing circuit and the voltage comparison circuit, and the voltage stabilizing circuit is also connected between the voltage regulating circuit and the voltage comparison circuit and used for performing voltage stabilizing protection on the voltage comparison circuit.
In a second aspect, embodiments of the present application further provide a voltage adjustment method, applied to the power supply circuit according to any of the embodiments, where the method includes:
acquiring a first target voltage and a second target voltage output by the voltage comparison circuit, and judging whether the first target voltage and the second target voltage meet a preset voltage condition;
and if the first target voltage or the second target voltage does not accord with the preset voltage condition, controlling the voltage regulating circuit to regulate the output regulated voltage, so that the first target voltage and the second target voltage accord with the preset voltage condition along with the regulation of the regulated voltage.
In one embodiment, the controlling the voltage regulation circuit to regulate the output regulated voltage comprises;
determining a voltage value of the regulated voltage output by the voltage regulating circuit according to the first target voltage and the second target voltage;
and according to the voltage value of the regulated voltage, performing resistance regulation on the voltage regulating circuit so as to regulate the regulated voltage output by the voltage regulating circuit.
In a third aspect, an embodiment of the present application further provides an electronic device, which includes a power supply source and the power supply circuit according to any one of the embodiments.
In a fourth aspect, this application further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the voltage adjustment method according to any one of the embodiments.
The application provides a power supply circuit, a voltage adjusting method, an electronic device and a storage medium. The voltage division circuit is connected with the power supply and is used for dividing power supply voltage input by the power supply to obtain a first voltage and a second voltage; the voltage regulating circuit is connected with the power supply and is used for regulating the power supply voltage input by the power supply to obtain regulated voltage; the voltage comparison circuit is used for comparing the first voltage with the regulating voltage to output a first target voltage, and is also used for comparing the second voltage with the regulating voltage to output a second target voltage; the control circuit is connected with the voltage comparison circuit and used for receiving the first target voltage and the second target voltage, and the control circuit is also connected with the control end of the voltage regulation circuit and used for controlling the voltage regulation circuit to regulate the output regulation voltage when the first target voltage or the second target voltage does not accord with the preset voltage condition, so that the first target voltage and the second target voltage accord with the preset voltage condition along with the regulation of the regulation voltage, the first target voltage and the second target voltage can be ensured to accord with the preset voltage condition, the power supply overvoltage or weak voltage is avoided, and the power supply stability is effectively enhanced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a circuit schematic diagram of an embodiment of a power supply circuit provided in an embodiment of the present application;
fig. 2 is a circuit schematic diagram of another implementation of a power supply circuit provided by an embodiment of the present application;
fig. 3 is a circuit schematic diagram of another implementation of a power supply circuit provided by an embodiment of the present application;
FIG. 4 is an equivalent schematic diagram of a voltage comparison circuit according to an embodiment of the present disclosure;
fig. 5 is a circuit schematic diagram of another implementation of a power supply circuit provided in an embodiment of the present application;
fig. 6 is a schematic flowchart illustrating steps of a voltage adjustment method according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The existing computer is seriously influenced by commercial power fluctuation when in use, most power supply circuits of the computer do not have a protection function, and the computer is easily burnt by overvoltage. For example, if the computer is frequently turned on and off during use, the computer is easily damaged by the impact of internal instant surge current, and therefore the power supply voltage of the computer needs to be monitored and adjusted. Although the dedicated ADC circuit can monitor and adjust the supply voltage, the circuit cost is high, and the stability of the supply voltage cannot be effectively maintained.
Based on the design, the invention designs the power supply circuit which is low in cost and easy to realize, and the power supply circuit specifically comprises a voltage division circuit, a voltage regulation circuit, a voltage comparison circuit and a control circuit. The control circuit is used for receiving the first target voltage and the second target voltage, and when the first target voltage or the second target voltage is not in accordance with the preset voltage condition, the control circuit controls the voltage regulating circuit to regulate the output regulating voltage, so that the first target voltage and the second target voltage are in accordance with the preset voltage condition along with the regulation of the regulating voltage, the first target voltage and the second target voltage can be ensured to be in accordance with the preset voltage condition, the power supply overvoltage is avoided, and the power supply stability is effectively enhanced.
Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Referring to fig. 1, fig. 1 is a circuit schematic diagram of an embodiment of a power supply circuit according to an embodiment of the present disclosure.
As shown in fig. 1, the power supply circuit 100 is connected to a power supply 200, and the power supply circuit 100 includes a voltage divider circuit 110, a voltage regulator circuit 120, a voltage comparator circuit 130, and a control circuit 140. The power supply 200 is used to provide a power supply voltage for the power supply circuit 100, and the power supply 200 may be an internal power supply or an external power supply, for example, the power supply 200 is a battery assembly.
In an embodiment, as shown in fig. 1, the voltage dividing circuit 110 is connected to the power supply 200, and the voltage dividing circuit 110 is configured to divide the power supply voltage input by the power supply 200 to obtain a first voltage V1 and a second voltage V2; the voltage dividing circuit 110 is also connected to the voltage comparing circuit 130 to output the first voltage V1 and the second voltage V2 to the voltage comparing circuit 130.
Illustratively, the input terminal of the voltage dividing circuit 110 is used for being connected to the power supply 200 to receive the power supply voltage VCC input by the power supply 200; a first output terminal of the voltage divider circuit 110 is connected to a first input terminal of the voltage comparator circuit 130 to output a first voltage V1 to the voltage comparator circuit 130; a second output terminal of the voltage divider circuit 110 is connected to a second input terminal of the voltage comparator circuit 130 to output a second voltage V2 to the voltage comparator circuit 130.
In one embodiment, as shown in fig. 2, the voltage divider circuit 110 includes a first voltage divider resistor R1, a second voltage divider resistor R2, and a third voltage divider resistor R3; a first end of the first voltage-dividing resistor R1 is connected with the power supply 200, a second end of the first voltage-dividing resistor R1 is connected with a first end of the second voltage-dividing resistor R2, a second end of the second voltage-dividing resistor R2 is connected with a first end of the third voltage-dividing resistor R3, and a second end of the third voltage-dividing resistor R3 is grounded; a circuit node between the second terminal of the first voltage-dividing resistor R1 and the first terminal of the second voltage-dividing resistor R2 serves as a first output terminal of the voltage-dividing circuit 110 to output a first voltage V1; a circuit node between the second terminal of the second voltage-dividing resistor R2 and the first terminal of the third voltage-dividing resistor R3 serves as a second output terminal of the voltage-dividing circuit 110 to output a second voltage V2.
It should be noted that the voltage dividing circuit 110 may include, but is not limited to, a first voltage dividing resistor R1, a second voltage dividing resistor R2, and a third voltage dividing resistor R3, and the voltage dividing circuit 110 may include a greater number of voltage dividing resistors, for example, the voltage dividing circuit 110 further includes a fourth voltage dividing resistor, a fifth voltage dividing resistor, and the like. The resistance values of the voltage dividing resistors may be equal or unequal, or may be connected in parallel or in series, and the number, connection mode, output end position, and the like of the voltage dividing resistors may be set according to actual conditions, so that the voltage dividing circuit 110 can output the first voltage V1 and the second voltage V2 with unequal voltages.
Illustratively, the voltage dividing circuit 110 includes a first voltage dividing resistor R1, a second voltage dividing resistor R2, and a third voltage dividing resistor R3, where the resistances of the first voltage dividing resistor R1, the second voltage dividing resistor R2, and the third voltage dividing resistor R3 are the same, the power supply voltage input by the power supply 200 is VCC, a circuit node between the second terminal of the first voltage dividing resistor R1 and the first terminal of the second voltage dividing resistor R2 is used as the first output terminal of the voltage dividing circuit 110, and a circuit node between the second terminal of the second voltage dividing resistor R2 and the first terminal of the third voltage dividing resistor R3 is used as the second output terminal of the voltage dividing circuit 110, so that the first voltage V1 output by the voltage dividing circuit 110 is 2/3VCC, and the second voltage V2 is 1/3 VCC.
In an embodiment, as shown in fig. 1 and fig. 2, the voltage regulating circuit 120 is connected to the power supply 200, and the voltage regulating circuit 120 is configured to regulate the power supply voltage input by the power supply 200 to obtain a regulated voltage V3.
Illustratively, the input terminal of the voltage regulating circuit 120 is connected to the power supply 200 to receive the power supply voltage; the output terminal of the voltage regulating circuit 120 is connected to the first input terminal and the second input terminal of the voltage comparing circuit 130, so as to output the regulated voltage V3 to the first input terminal and the second input terminal of the voltage comparing circuit 130.
The voltage regulator circuit 120 can regulate the power supply voltage input by the power supply 200 to obtain a regulated voltage V3, and the regulation method includes resistance regulation, signal regulation, frequency regulation, and the like. It can be understood that the resistance values of the circuit elements in the voltage regulating circuit 120 can be changed by means of resistance regulation, so that the output regulated voltage V3 can be adjusted; the regulated voltage V3 output by the voltage regulator circuit 120 can be adjusted by signal regulation means such as PWM signals; the operating frequency of the circuit elements in the voltage regulator circuit 120 is adjusted by means of frequency adjustment, and the regulated voltage V3 output by the voltage regulator circuit 120 can also be adjusted.
In one embodiment, voltage regulation circuit 120 includes at least one adjustable resistor; the control circuit 140 is connected to the control terminal of the at least one adjustable resistor, and is configured to adjust the resistance of the at least one adjustable resistor according to the first target voltage and the second target voltage, so as to adjust the adjusted voltage V3 output by the voltage adjusting circuit 120. It should be noted that the voltage adjusting circuit 120 may further include one or more other resistors (non-adjustable resistors) with fixed resistance values, and the connection manner between at least one adjustable resistor and the non-adjustable resistor may be flexibly set according to actual conditions. The regulated voltage V3 output by the voltage regulating circuit 120 can be flexibly and effectively regulated by the at least one adjustable resistor, so that the supply voltage is within a required voltage clamping range, and the stability of the supply voltage can be effectively maintained.
In one embodiment, the circuit node associated with the adjustable resistance is used as the output of the voltage regulating circuit 120, and the output of the voltage regulating circuit 120 is used to output the regulated voltage V3. The adjustment voltage V3 output by the circuit node associated with the adjustable resistor changes with the change of the resistance value of the adjustable resistor, in other words, the circuit node associated with the adjustable resistor is the circuit node whose output voltage changes due to the change of the resistance value of the adjustable resistor. Effective regulation of the regulated voltage V3 is facilitated by the circuit node associated with the adjustable resistance outputting the regulated voltage V3.
For example, the circuit node associated with the adjustable resistor may be a circuit node between two adjustable resistors connected in series, and the circuit node is connected as an output terminal of the voltage adjusting circuit 120 to the first input terminal and the second input terminal of the voltage comparing circuit 130.
In one embodiment, as shown in fig. 2, the voltage regulating circuit 120 includes a first adjustable resistor 121 and a second adjustable resistor 122; a first end of the first adjustable resistor 121 is connected with the power supply 200, a second end of the first adjustable resistor 121 is connected with a first end of the second adjustable resistor 122, and a second end of the second adjustable resistor 122 is grounded; the control circuit 140 is connected to the control ends of the first adjustable resistor 121 and the second adjustable resistor 122; a circuit node between the second terminal of the first adjustable resistor 121 and the first terminal of the second adjustable resistor 122 serves as an output terminal of the voltage regulating circuit 120.
It should be noted that the voltage regulation circuit 120 may include, but is not limited to, a first adjustable resistor 121 and a second adjustable resistor 122, and the voltage regulation circuit 120 may include a greater number of adjustable resistors, for example, the voltage regulation circuit 120 further includes a third adjustable resistor, a fourth adjustable resistor, and so on. The resistance values of the adjustable resistors can be equal or unequal, and can also be connected in parallel or in series, and the number, the connection mode, the output end position and the like of the adjustable resistors can be set according to actual conditions. For example, the voltage regulating circuit 120 is composed of three series-connected adjustable resistors.
Illustratively, as shown in fig. 2, the first adjustable resistor 121 and the second adjustable resistor 122 are connected in series, a circuit node between the second terminal of the first adjustable resistor 121 and the first terminal of the second adjustable resistor 122 serves as an output terminal of the voltage regulating circuit 120, and the output terminal of the voltage regulating circuit 120 is connected to the first input terminal and the second input terminal of the voltage comparing circuit 130.
In one embodiment, as shown in fig. 1 and fig. 2, the voltage comparison circuit 130 is connected to the voltage divider circuit 110 and the voltage regulator circuit 120, the voltage comparison circuit 130 is configured to compare the first voltage V1 and the regulated voltage V3 to output a first target voltage, and the voltage comparison circuit 130 is further configured to compare the second voltage V2 and the regulated voltage V3 to output a second target voltage.
Illustratively, the voltage comparison circuit 130 includes a first comparison circuit connected to the voltage dividing circuit 110 and the voltage adjusting circuit 120 for comparing the first voltage V1 and the adjusted voltage V3 to output a first target voltage, and a second comparison circuit connected to the voltage dividing circuit 110 and the voltage adjusting circuit 120 for comparing the second voltage V2 and the adjusted voltage V3 to output a second target voltage.
In one embodiment, as shown in fig. 2, the voltage comparison circuit 130 includes a first comparator 131 and a second comparator 132; a first input terminal of the first comparator 131 is connected to the first output terminal of the voltage divider circuit 110 to receive the first voltage V1; a second input terminal of the first comparator 131 is connected to the output terminal of the voltage regulating circuit 120 to receive the regulated voltage V3; the first comparator 131 is used for comparing the first voltage V1 and the regulated voltage V3 to output a first target voltage Vol _ l; a first input terminal of the second comparator 132 is connected to the second output terminal of the voltage divider circuit 110 to receive the second voltage V2; a second input of the second comparator 132 is connected to the output of the voltage regulating circuit 120 to receive the regulated voltage V3; the second comparator 132 is used to compare the second voltage V2 and the regulated voltage V3 to output a second target voltage Vol _ h.
It should be noted that the voltage comparison circuit 130 can receive a first voltage V1, a second voltage V2, and an adjustment voltage V3, wherein the first comparator 131 is configured to compare the first voltage V1 and the adjustment voltage V3 to obtain a first comparison result, and output a first target voltage according to the first comparison result; the second comparator 132 is configured to compare the second voltage V2 with the adjustment voltage V3 to obtain a second comparison result, and output a second target voltage according to the second comparison result. Wherein the first comparison result and the second comparison result are determined according to the voltage magnitude and the comparator type.
As shown in fig. 2, a first input terminal of the first comparator 131 is an inverting input terminal, and a second input terminal of the first comparator 131 is a non-inverting input terminal; the first input terminal of the second comparator 132 is a non-inverting input terminal, and the second input terminal of the second comparator 132 is an inverting input terminal. It should be noted that the positive and negative settings of the input terminals of the first comparator 131 and the second comparator 132 are related to the voltage output principle of the voltage comparator: the voltage comparator input is a linear quantity and the output is a switch (high-low) quantity. It compares an analog voltage signal with a reference fixed voltage, and in the vicinity of the two equal in amplitude, the output voltage will jump to output a high level or a low level correspondingly.
For example, the inverting input terminal of the first comparator 131 in fig. 2 is configured to receive the first voltage V1, the non-inverting input terminal of the first comparator 131 is configured to receive the adjusting voltage V3, the first comparator 131 outputs a high level when the adjusting voltage V3 is greater than the first voltage V1, and the first comparator 131 outputs a low level when the adjusting voltage V3 is less than the first voltage V1; the non-inverting input terminal of the second comparator 132 in fig. 2 is configured to receive the second voltage V2, the inverting input terminal of the second comparator 132 is configured to receive the adjusting voltage V3, the second comparator 132 outputs a low level when the adjusting voltage V3 is greater than the second voltage V2, and the second comparator 132 outputs a high level when the adjusting voltage V3 is less than the second voltage V2.
For example, different output states of the first comparator 131 and the second comparator 132 can be obtained according to the voltage difference of the regulating voltage V3: assume that the first voltage V1 is 3/4Vcc and the second voltage V2 is 1/2 Vcc; if the regulated voltage V3 is less than 1/2Vcc, the output Vol _ l of the first comparator 131 is low, and the output Vol _ h of the second comparator 132 is high; if the regulated voltage V3 is greater than 1/2Vcc and less than 3/4Vcc, the output Vol _ l of the first comparator 131 is low, and the output Vol _ h of the second comparator 132 is low; if the regulated voltage V3 is greater than 3/4Vcc, the output Vol _ l of the first comparator 131 is high and the output Vol _ h of the second comparator 132 is low.
It should be noted that the first voltage V1 and the second voltage V2 are fixed, the adjusting voltage V3 is adjustable, and through the positive and negative arrangement of the input terminals of the first comparator 131 and the second comparator 132 and the voltage output principle of the voltage comparator, the voltage comparison value between the adjusting voltage V3 and the first voltage V1 and the second voltage V2 can be determined through the high level or the low level output by the first comparator 131 and the second comparator 132, so that the voltage value of the adjusting voltage V3 can be derived, and the controllable control voltage adjusting circuit 120 adjusts the output adjusting voltage V3, so that the first target voltage Vol _ l and the second target voltage Vol _ h are adjusted along with the adjustment of the adjusting voltage V3.
In some embodiments, the first input terminal of the first comparator 131 may be a non-inverting input terminal, and the second input terminal of the first comparator 131 may be an inverting input terminal; the first input of the second comparator 132 may be an inverting input, and the second input of the second comparator 132 may be a non-inverting input. Therefore, the positive and negative input terminals of the first comparator 131 and the second comparator 132 can be flexibly set according to actual conditions.
In one embodiment, as shown in fig. 3, the power supply circuit 100 further includes a voltage stabilizing circuit 150; the voltage stabilizing circuit 150 is connected between the voltage dividing circuit 110 and the voltage comparing circuit 130, and the voltage stabilizing circuit 150 is further connected between the voltage regulating circuit 120 and the voltage comparing circuit 130 for performing voltage stabilizing protection on the voltage comparing circuit 130.
For example, as shown in fig. 2, the voltage stabilizing circuit 150 includes voltage stabilizing adjusting resistors (also referred to as current limiting resistors) R5, R6, R7, and R8, which are used to limit the magnitude of the branch current of each voltage stabilizing adjusting resistor, so as to prevent the series-connected components from being burned out due to excessive current. It will be appreciated that the stabilizing circuit 150 may also include other electronic components such as zener diodes.
In one embodiment, as shown in fig. 1, the control circuit 140 is connected to the voltage comparison circuit 130 to receive a first target voltage and a second target voltage; the control circuit 140 is further connected to the control terminal of the voltage regulating circuit 120, and the control circuit 140 is configured to control the voltage regulating circuit 120 to adjust the output regulated voltage V3 when the first target voltage or the second target voltage does not meet the preset voltage condition, so that the first target voltage and the second target voltage meet the preset voltage condition along with the adjustment of the regulated voltage V3.
The control circuit 140 includes at least one processor (CPU), and since the processor is seriously affected by power supply voltage fluctuation during operation, for example, the processor is easily burned or related circuits are easily damaged due to too high fluctuation voltage, voltage management and load control with low cost are realized by monitoring and adjusting the power supply voltages of the first target voltage circuit and the second target voltage circuit, power-on stability of the system can be effectively enhanced, and hardware cost is low.
The preset voltage condition comprises that the first target voltage is greater than or equal to a first preset voltage and the second target voltage is less than or equal to a second preset voltage, wherein the second preset voltage is greater than the first preset voltage. Or, the preset voltage condition includes that the first target voltage and the second target voltage are within a preset voltage interval range, and the preset voltage interval is [ a first preset voltage, a second preset voltage ]. The output regulated voltage V3 is adjusted by controlling the voltage regulating circuit 120, so that the first target voltage and the second target voltage are adjusted along with the adjustment of the regulated voltage V3, the power supply voltage is always within a required voltage clamping (preset voltage interval), the power supply voltage is prevented from being too high or too low, and the stability of the power supply voltage is maintained.
For example, the first preset voltage may be set according to a voltage value corresponding to the second voltage V2 output by the voltage divider circuit 110, and the second preset voltage may be set according to a voltage value corresponding to the first voltage V1 output by the voltage divider circuit 110, for example, the first voltage V1 output by the voltage divider circuit 110 is 2/3VCC, the second voltage V2 is 1/3VCC, the first preset voltage is a voltage value 1/3VCC corresponding to the second voltage V2, and the second preset voltage is a voltage value 2/3VCC corresponding to the first voltage V1, that is, the preset voltage interval is [1/3VCC, 2/3VCC ].
In one embodiment, as shown in fig. 2, the control circuit 140 receives a first target voltage Vol _ l and a second target voltage Vol _ h, and determining whether the first target voltage Vol _ l and the second target voltage Vol _ h meet the preset voltage condition, if it is determined that the first target voltage Vol _ l or the second target voltage Vol _ h do not meet the preset voltage condition, a control signal is generated and sent to the control terminal of the voltage regulating circuit 120, to adjust the regulated voltage V3 output by the voltage regulating circuit 120, the first target voltage Vol _ l and the second target voltage Vol _ h are enabled to accord with the preset voltage condition along with the adjustment of the adjusting voltage V3, the phenomena of overvoltage and weak voltage of the first target voltage Vol _ l and the second target voltage Vol _ h can be avoided, the monitoring of the first target voltage Vol _ l and the second target voltage Vol _ h can be realized, and the power supply stability can be effectively enhanced.
The manner of adjusting the regulated voltage V3 output by the voltage regulator circuit 120 includes: determining the voltage value of the regulated voltage V3 output by the voltage regulating circuit 120 according to the first target voltage Vol _ l and the second target voltage Vol _ h; according to the voltage value of the regulating voltage V3, the voltage regulating circuit 120 is resistance-regulated to adjust the regulating voltage V3 output by the voltage regulating circuit 120.
It should be noted that, by determining whether the first target voltage Vol _ l and the second target voltage Vol _ h output by the comparator are at a high level or a low level, the voltage value of the regulated voltage V3 compared with the first voltage V1 and the second voltage V2 can be determined, so that the voltage regulating circuit 120 can be reasonably controlled to regulate the output regulated voltage V3, and the first target voltage Vol _ l and the second target voltage Vol _ h are regulated along with the regulation of the regulated voltage V3.
For example, the voltage value of the regulation voltage V3 can be determined according to the output states of the first target voltage Vol _ l and the second target voltage Vol _ h: assuming that the first voltage V1 is 3/4Vcc and the second voltage V2 is 1/2Vcc, the first preset voltage is 1/2Vcc corresponding to the second voltage V2, and the second preset voltage can be 3/4Vcc corresponding to the first voltage V1 output by the voltage divider circuit 110; if the first target voltage Vol _ l is at a low level and the second target voltage Vol _ h is at a high level, it can be deduced that the regulated voltage V3 is less than 1/2 Vcc; if the first target voltage Vol _ l is low and the second target voltage Vol _ h is low, it can be derived that the regulated voltage V3 is greater than 1/2Vcc and less than 3/4 Vcc; if the first target voltage Vol _ l is high and the second target voltage Vol _ h is low, it can be derived that the regulated voltage V3 is greater than 3/4 Vcc.
For example, in the power supply circuit 100 shown in fig. 2, the required regulated voltage V3 is greater than 1/2Vcc and less than 3/4Vcc, i.e., the preset voltage condition is that the first target voltage Vol _ l and the second target voltage Vol _ h are both low. If the first target voltage Vol _ l output by the first comparator 131 in the voltage comparison circuit 130 is at a high level and the second target voltage Vol _ h output by the second comparator 132 is at a low level, it may be determined that the adjustment voltage V3 is smaller than a first preset voltage in a preset voltage interval, the first target voltage Vol _ l does not meet a preset voltage condition, and the first adjustable resistor 121 in the voltage adjustment circuit 120 needs to be adjusted high and/or the second adjustable resistor 122 in the voltage adjustment circuit 120 needs to be adjusted low, so that the first target voltage Vol _ l output by the first comparator 131 is changed to a low level, and the second target voltage Vol _ h output by the second comparator 132 is kept at a low level, so that the adjusted first target voltage and the adjusted second target voltage meet the preset voltage condition.
For convenience of illustration, the voltage comparison circuit 130 is simplified and equivalent as shown in fig. 4, and the voltage comparison circuit 130 can be packaged as a voltage comparison chip. In an embodiment, the power supply circuit 100 is capable of supplying power to a plurality of processors, as applied to a scenario of the control circuit 140 including a plurality of processors, as explained below with the example of the power supply circuit 100 applied to the control circuit 140 including a dual-core processor:
referring to fig. 5, the voltage divider circuit 110 includes a first voltage divider resistor R1, a second voltage divider resistor R2, a third voltage divider resistor R3, and a fourth voltage divider resistor R4 connected in series, wherein one end of the first voltage divider resistor R1 is used for receiving a power supply voltage provided by the power supply 200, and one end of the fourth voltage divider resistor R4 is grounded; the voltage regulating circuit 120 includes a first adjustable resistor 121, a second adjustable resistor 122 and a third adjustable resistor 123 connected in series, one end of the first adjustable resistor 121 is used for receiving the power supply voltage provided by the power supply 200, and one end of the third adjustable resistor 123 is grounded; the voltage comparison circuit 130 includes a first comparison circuit 131 and a second comparison circuit 132, and the first comparison circuit 131 and the second comparison circuit 132 are respectively connected to the voltage division circuit 110 and the voltage regulation circuit 120; the control circuit 140 includes a first processor 141 and a second processor 142, the first processor 141 is connected to the first comparison circuit 131, and the second processor 142 is connected to the second comparison circuit 132.
The first comparison circuit 131 is used for comparing the first voltage V1 with the regulated voltage V3 to output a first target voltage Vol _ l, and is also used for comparing the second voltage V2 with the regulated voltage V3 to output a second target voltage Vol _ h, and the second comparison circuit 132 is used for comparing the first voltage V1 with the regulated voltage V3 to output a second target voltage Vol _ h; the second comparison circuit 132 is used for comparing the second voltage V2 with the regulated voltage V5 to output the first target voltage Vol _ l ', and is also used for comparing the fourth voltage V4 with the regulated voltage V5 to output the second target voltage Vol _ h'.
The first processor 141 is configured to receive the first target voltage Vol _ l and the second target voltage Vol _ h sent by the first comparing circuit 131, and when the first target voltage Vol _ l or the second target voltage Vol _ h does not meet the preset voltage condition, control and adjust the resistances of the first adjustable resistor 121, the second adjustable resistor 122, and/or the third adjustable resistor 123 to adjust the adjusting voltage V3, so that the first target voltage Vol _ l and the second target voltage Vol _ h meet the preset voltage condition along with the adjustment of the adjusting voltage V3; the second processor 142 is configured to receive the first target voltage Vol _ l 'and the second target voltage Vol _ h' sent by the second comparing circuit 132, and control and adjust the resistances of the first adjustable resistor 121, the second adjustable resistor 122, and/or the third adjustable resistor 123 to adjust the adjusting voltage V5 when the first target voltage Vol _ l 'or the second target voltage Vol _ h' does not meet the preset voltage condition, so that the first target voltage Vol _ l 'and the second target voltage Vol _ h' meet the preset voltage condition along with the adjustment of the adjusting voltage V5.
The power supply circuit 100 according to the above embodiment includes a voltage divider circuit 110, a voltage regulator circuit 120, a voltage comparator circuit 130, and a control circuit 140. The voltage dividing circuit 110 is connected to the power supply 200, and is configured to divide a power supply voltage input by the power supply 200 to obtain a first voltage V1 and a second voltage V2; the voltage regulating circuit 120 is connected to the power supply 200, and is configured to regulate a power supply voltage input by the power supply 200 to obtain a regulated voltage V3; the voltage comparison circuit 130 is used for comparing the first voltage V1 with the regulated voltage V3 to output a first target voltage, and the voltage comparison circuit 130 is also used for comparing the second voltage V2 with the regulated voltage V3 to output a second target voltage; the control circuit 140 is connected to the voltage comparison circuit 130 for receiving the first target voltage and the second target voltage, and the control circuit 140 is further connected to the control end of the voltage regulation circuit 120 for controlling the voltage regulation circuit 120 to regulate the output regulated voltage V3 when the first target voltage or the second target voltage does not meet the preset voltage condition, so that the first target voltage and the second target voltage meet the preset voltage condition along with the regulation of the regulated voltage V3, the first target voltage and the second target voltage can be guaranteed to meet the preset voltage condition, the power supply overvoltage or weak voltage is avoided, and the power supply stability is effectively enhanced.
Referring to fig. 6, fig. 6 is a schematic flow chart illustrating a step of a voltage adjustment method according to an embodiment of the present disclosure.
As shown in fig. 6, the voltage adjustment method includes steps S201 to S202, and is applied to any one of the power supply circuits provided in the embodiments of the present invention.
Step S201, obtaining a first target voltage and a second target voltage output by the voltage comparison circuit, and determining whether the first target voltage and the second target voltage meet a preset voltage condition.
Wherein the first target voltage is output by the voltage comparison circuit according to a comparison result of the first voltage and the adjustment voltage, and the second target voltage is output by the voltage comparison circuit according to a comparison result of the second voltage and the adjustment voltage.
The preset voltage condition includes that the first target voltage and the second target voltage are within a preset voltage interval range, and if the preset voltage interval is set to [ the first preset voltage and the second preset voltage ], the preset voltage condition may be that the first target voltage is greater than or equal to the first preset voltage, and the second target voltage is less than or equal to the second preset voltage, and the first target voltage and the second target voltage may be respectively set according to the second voltage output by the voltage dividing circuit and a voltage value corresponding to the first voltage.
The preset voltage condition further includes preset level types of the first target voltage and the second target voltage, the preset level types are according to a first comparator and a second comparator in the voltage comparison circuit, and for example, the preset voltage condition is that the first target voltage and the second target voltage are both low levels.
Step S202, if the first target voltage or the second target voltage does not meet the preset voltage condition, controlling the voltage regulating circuit to regulate the output regulated voltage, so that the first target voltage and the second target voltage meet the preset voltage condition along with the regulation of the regulated voltage.
The voltage regulating circuit comprises at least one adjustable resistor; the control circuit is connected to the control end of at least one adjustable resistor. The output regulation voltage can be regulated by controlling the voltage regulation circuit, and the regulation mode comprises resistance regulation, signal regulation, frequency regulation and the like. For example, the voltage regulation circuit adjusts the regulated voltage by changing the resistance value of a circuit element in the voltage regulation circuit by means of resistance regulation.
In one embodiment, the control voltage regulation circuit regulates the regulated voltage of the output, including; determining a voltage value of the regulating voltage output by the voltage regulating circuit according to the first target voltage and the second target voltage; and according to the voltage value of the regulating voltage, performing resistance regulation on the voltage regulating circuit so as to regulate the regulating voltage output by the voltage regulating circuit.
For example, if the first target voltage output by the first comparator in the voltage comparison circuit is at a high level and the first target voltage output by the second comparator is at a low level, it may be determined that the regulated voltage is less than the first preset voltage in the preset voltage interval, the first target voltage does not meet the preset voltage condition, and the first adjustable resistor in the voltage regulation circuit and/or the second adjustable resistor in the voltage regulation circuit need to be turned up so that the first target voltage output by the first comparator is at a low level and the first target voltage output by the second comparator is at a low level, so that the regulated first target voltage and the regulated second target voltage meet the preset voltage condition.
In the voltage adjustment method provided by the embodiment, the first target voltage and the second target voltage output by the voltage comparison circuit are obtained, and whether the first target voltage and the second target voltage meet the preset voltage condition is judged; if the first target voltage or the second target voltage does not accord with the preset voltage condition, the voltage regulating circuit is controlled to regulate the output regulating voltage, so that the first target voltage and the second target voltage accord with the preset voltage condition along with the regulation of the regulating voltage, the phenomena of overvoltage and weak voltage of the first target voltage and the second target voltage can be avoided, the monitoring on the first target voltage and the second target voltage can be realized, and the power supply stability can be effectively enhanced.
Referring to fig. 7, fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure.
As shown in fig. 7, the electronic device 300 includes:
a power supply 310 and a power supply circuit 320, wherein the power supply 310 is used for providing a power supply voltage to the power supply circuit 320, the power supply 310 may be the power supply 200 of the above embodiment, and the power supply circuit 320 may be the power supply circuit 100 of the above embodiment.
It should be noted that the electronic device 300 may be an electronic device such as a mobile phone, a tablet computer, a notebook computer, a desktop computer, a personal digital assistant, and a wearable device.
It will be appreciated by those skilled in the art that the structure shown in fig. 7 is a block diagram of only a portion of the structure associated with an embodiment of the present invention, and is not intended to limit the electronic devices to which embodiments of the present invention may be applied, and that a particular electronic device may include more or fewer components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, the power supply circuit 320 is configured to implement the following steps:
acquiring a first target voltage and a second target voltage output by the voltage comparison circuit, and judging whether the first target voltage and the second target voltage meet a preset voltage condition;
and if the first target voltage or the second target voltage does not accord with the preset voltage condition, controlling the voltage regulating circuit to regulate the output regulated voltage, so that the first target voltage and the second target voltage accord with the preset voltage condition along with the regulation of the regulated voltage.
It should be noted that, as will be clear to those skilled in the art, for convenience and brevity of description, the specific working process of the electronic device described above may refer to the corresponding process in the foregoing voltage adjustment method embodiment, and details are not described herein again.
Embodiments of the present invention also provide a storage medium for computer-readable storage, where the storage medium stores one or more programs, and the one or more programs are executable by one or more processors to implement any of the steps of the voltage adjustment method provided in the embodiments of the present invention.
The storage medium may be an internal storage unit of the electronic device described in the foregoing embodiment, for example, a hard disk or a memory of the electronic device. The storage medium may also be an external storage device of the electronic device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the electronic device.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units referred to in the above description does not necessarily correspond to the division of physical components. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit.
The software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
The above disclosure provides many different embodiments, or examples, for implementing different features of the application. The components and arrangements of specific examples are described above to simplify the present disclosure. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
In the description herein, references to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above embodiments are only preferred embodiments of the present application, and the scope of the present application is not limited thereto, and any insubstantial changes and substitutions made by those skilled in the art based on the present application are intended to be covered by the present application.
Claims (12)
1. A power supply circuit, comprising:
the voltage division circuit is connected with a power supply and divides power supply voltage input by the power supply to obtain a first voltage and a second voltage;
the voltage regulating circuit is connected with the power supply and is used for regulating the power supply voltage input by the power supply to obtain a regulated voltage;
the voltage comparison circuit is connected with the voltage division circuit and the voltage regulation circuit and is used for comparing the first voltage with the regulation voltage to output a first target voltage, and the voltage comparison circuit is also used for comparing the second voltage with the regulation voltage to output a second target voltage;
a control circuit connected with the voltage comparison circuit to receive the first target voltage and the second target voltage; the control circuit is also connected with the control end of the voltage regulating circuit;
the control circuit is used for controlling the voltage regulating circuit to regulate the output regulated voltage when the first target voltage or the second target voltage does not accord with a preset voltage condition, so that the first target voltage and the second target voltage accord with the preset voltage condition along with the regulation of the regulated voltage.
2. The power supply circuit of claim 1 wherein the voltage comparison circuit comprises a first comparator and a second comparator;
a first input end of the first comparator is connected with a first output end of the voltage division circuit so as to receive the first voltage; a second input end of the first comparator is connected with an output end of the voltage regulating circuit so as to receive the regulated voltage; the first comparator is used for comparing the first voltage with the regulating voltage to output a first target voltage;
a first input end of the second comparator is connected with a second output end of the voltage division circuit so as to receive the second voltage; a second input end of the second comparator is connected with the output end of the voltage regulating circuit so as to receive the regulated voltage; the second comparator is used for comparing the second voltage with the regulating voltage to output a second target voltage.
3. The power supply circuit of claim 2 wherein the first input of the first comparator is an inverting input and the second input of the first comparator is a non-inverting input; the first input end of the second comparator is a positive phase input end, and the second input end of the second comparator is an inverted phase input end.
4. The power supply circuit of claim 1 wherein said voltage regulation circuit comprises at least one adjustable resistance;
the control circuit is connected to the control end of at least one adjustable resistor and used for adjusting the resistance value of at least one adjustable resistor according to the first target voltage and the second target voltage, so that the adjusting voltage output by the voltage adjusting circuit is adjusted.
5. The power supply circuit of claim 4 wherein a circuit node associated with the adjustable resistance is used as an output of the voltage regulation circuit, the output of the voltage regulation circuit being used to output the regulated voltage.
6. The power supply circuit of claim 4 wherein said voltage regulation circuit comprises a first adjustable resistance and a second adjustable resistance; the first end of the first adjustable resistor is connected with the power supply, the second end of the first adjustable resistor is connected with the first end of the second adjustable resistor, and the second end of the second adjustable resistor is grounded;
the control circuit is connected to the control ends of the first adjustable resistor and the second adjustable resistor; and a circuit node between the second end of the first adjustable resistor and the first end of the second adjustable resistor is used as an output end of the voltage regulating circuit.
7. The power supply circuit according to claim 6, wherein the voltage dividing circuit includes a first voltage dividing resistor, a second voltage dividing resistor, and a third voltage dividing resistor; a first end of the first voltage-dividing resistor is connected with the power supply, a second end of the first voltage-dividing resistor is connected with a first end of the second voltage-dividing resistor, a second end of the second voltage-dividing resistor is connected with a first end of the third voltage-dividing resistor, and a second end of the third voltage-dividing resistor is grounded;
a circuit node between a second end of the first voltage-dividing resistor and a first end of the second voltage-dividing resistor is used as a first output end of the voltage-dividing circuit to output the first voltage; a circuit node between the second terminal of the second voltage-dividing resistor and the first terminal of the third voltage-dividing resistor serves as a second output terminal of the voltage-dividing circuit to output the second voltage.
8. The power supply circuit of any one of claims 1-7 wherein the power supply circuit further comprises a voltage regulation circuit;
the voltage stabilizing circuit is connected between the voltage dividing circuit and the voltage comparison circuit, and the voltage stabilizing circuit is also connected between the voltage regulating circuit and the voltage comparison circuit and used for performing voltage stabilizing protection on the voltage comparison circuit.
9. A voltage regulation method applied to the power supply circuit according to any one of claims 1 to 8, the method comprising:
acquiring a first target voltage and a second target voltage output by the voltage comparison circuit, and judging whether the first target voltage and the second target voltage meet a preset voltage condition;
and if the first target voltage or the second target voltage does not accord with the preset voltage condition, controlling the voltage regulating circuit to regulate the output regulated voltage, so that the first target voltage and the second target voltage accord with the preset voltage condition along with the regulation of the regulated voltage.
10. The voltage regulation method of claim 9 wherein the controlling the voltage regulation circuit to regulate the regulated voltage of the output comprises;
determining a voltage value of the regulated voltage output by the voltage regulating circuit according to the first target voltage and the second target voltage;
and according to the voltage value of the regulated voltage, performing resistance regulation on the voltage regulating circuit so as to regulate the regulated voltage output by the voltage regulating circuit.
11. An electronic device, characterized in that it comprises a power supply source and a power supply circuit according to any one of claims 1 to 8.
12. A computer-readable storage medium, having a computer program stored thereon, wherein the computer program, when being executed by a processor, carries out the steps of the voltage adjustment method according to any one of claims 9 to 10.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210224647.7A CN114665703A (en) | 2022-03-07 | 2022-03-07 | Power supply circuit, voltage adjusting method, electronic device, and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210224647.7A CN114665703A (en) | 2022-03-07 | 2022-03-07 | Power supply circuit, voltage adjusting method, electronic device, and storage medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115185328A (en) * | 2022-07-25 | 2022-10-14 | 深圳市恒运昌真空技术有限公司 | Voltage regulating circuit, electric signal detection circuit and electronic equipment |
| CN115940626A (en) * | 2023-02-08 | 2023-04-07 | 合肥联宝信息技术有限公司 | Power supply control circuit, method, electronic equipment and storage medium |
-
2022
- 2022-03-07 CN CN202210224647.7A patent/CN114665703A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115185328A (en) * | 2022-07-25 | 2022-10-14 | 深圳市恒运昌真空技术有限公司 | Voltage regulating circuit, electric signal detection circuit and electronic equipment |
| CN115185328B (en) * | 2022-07-25 | 2024-09-13 | 深圳市恒运昌真空技术有限公司 | Voltage regulating circuit, electric signal detection circuit and electronic equipment |
| CN115940626A (en) * | 2023-02-08 | 2023-04-07 | 合肥联宝信息技术有限公司 | Power supply control circuit, method, electronic equipment and storage medium |
| CN115940626B (en) * | 2023-02-08 | 2023-05-23 | 合肥联宝信息技术有限公司 | Power supply control circuit, power supply control method, electronic equipment and storage medium |
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