CN212012206U - Circuit structure for automatic identification of multiple mobile phone fast charging protocols based on TYPE-C interface - Google Patents

Abstract

The utility model discloses a circuit structure based on multiple cell-phone of TYPE-C interface automatic identification fills agreement soon, including USB input and TYPE-C output, be equipped with the OV identification chip and two resistances that are used for realizing that OPPO fills the agreement soon and VIVO fills the agreement soon and are 56K's agreement discernment resistance at TYPE-C output. The utility model discloses an integrated agreement discernment resistance that sets up OV identification chip and two 56K at the TYPE-C output of data line, break-make is controlled through OV identification chip to one of them, and control process is according to the cell-phone automatic identification that TYPE-C output is connected, with the realization to Hua do, the samsung, OPPO, VIVO, multiple cell-phones such as millet fill soon, and the realization structure of whole circuit is very simple, and is with low costs, the reliability is high, and it is very convenient to use.

Description

Circuit structure for automatic identification of multiple mobile phone fast charging protocols based on TYPE-C interface

technical field

The utility model relates to the technical field of data line charging devices, in particular to a circuit structure based on a TYPE-C interface for realizing fast charging protocols of various mobile phones such as Huawei, Samsung, OPPO, VIVO and the like.

Background technique

Due to the huge advantages of the TYPE-C interface in use, major mobile phone manufacturers have begun to fully implement the TYPE-C interface mode. However, in the early stage of application, the protocol for realizing fast charging has not been unified. At present, there are still many fast charging protocols on the market, such as Huawei protocol, Samsung protocol, OPPO protocol, etc. If the data line cannot support the above protocols at the same time, then It is not possible to quickly charge the corresponding mobile phone. For example, to achieve super fast charging of Huawei mobile phones, the TYPE-C terminal must be a dual 56K resistor TYPE-C connector. If a single 56K resistor is used, only 5V and 2A ordinary charging can be achieved. For Samsung mobile phones to achieve QC fast charging, the TYPE-C terminal must be a single 56K resistor TYPE-C connector. If dual 56K resistors are used, only 5V, 1A ordinary charging can be achieved. Of course, there are also OPPO mobile phones that need to have a USB input and need to have an identification chip to achieve fast charging, etc., and I will not list them one by one here. Based on the above reasons, the current data lines that can implement multiple fast charging protocols on the market generally have complex circuit structures. Resistor networks, various chips and electronic components, etc., will not only greatly increase the cost, but also make it more prone to failure.

Utility model content

The technical problem to be solved by the utility model is to provide a circuit structure with simpler realization structure, high reliability, convenient use, lower cost, and automatic identification of various mobile phone fast charging protocols based on the TYPE-C interface.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: a circuit structure for automatically identifying a variety of mobile phone fast charging protocols based on the TYPE-C interface, including a USB input end and a TYPE-C output end, and the The power line connection in the data line is characterized in that: the TYPE-C output end is provided with an OV identification chip U2 for implementing the OPPO fast charging protocol and the VIVO fast charging protocol, and two protocol identification resistors R2 with a resistance value of 56K, Resistor R3, the model of OV identification chip U2 is SOT23-6. Due to the existence of the OV identification chip, it can be directly used for fast charging of OPPO mobile phones and VIVO mobile phones; resistor R3 and resistor R2 are respectively connected to the pins of the TYPE-C output terminal CC and pin CC2, where the other end of the resistor R2 is connected to the pin 3 of the OV identification chip U2, and the OV identification chip U2 forms an on-off control structure for the resistor R2; the other end of the resistor R3 is directly connected through the power line of the data line The VBUS pin of the USB input keeps the resistor R3 in a high-level pull-up state; when the OV identification chip U2 connects to the protocol identification resistor R2 connected to it, it forms a double-resistor (ie, resistor R2 and resistor R3) pull-up to realize Huawei fast charging. At this time, the super fast charging of Huawei mobile phones can be realized. When the OV identification chip U2 disconnects the protocol identification resistor R2 connected to it, a single resistance pull-up is formed to realize the Samsung fast charging protocol. At this time, the QC fast charging of Samsung mobile phones can be realized.

The pin 5 of the OV identification chip U2 is connected to a voltage stabilization circuit, which is used to supply power to the OV identification chip U2, while preventing high voltage from damaging the OV identification chip U2; the voltage stabilization circuit is connected to the power line of the data line; the voltage stabilization circuit includes: There is a 5V Zener diode D1 and a resistor R1. The pin 5 of the OV identification chip U2 is connected to the resistor R1 and the cathode of the Zener diode D1. The positive pole of the Zener diode D1 is connected to a capacitor C2. The capacitor C2 is connected to the other end of the resistor R1. Connect to the power line of the data line together, and the positive electrode of the Zener diode is grounded; the model of the OV identification chip U2 is YD19080 or ST1551.

The pin 6 of the OV identification chip U2 is connected to the pin ID of the USB input terminal through a resistor R9, and the pin 2 of the OV identification chip U2 is grounded.

The pin 1 of the OV identification chip U2 is directly connected to the pin CC of the TYPE-C output end, and the pin CC, the resistor R3 and the pin 1 of the OV identification chip U2 are grounded together through a resistor R4.

The pin 5 of the OV identification chip U2 is grounded through a capacitor C1 for filtering.

Working principle: When the USB input end is inserted into the charger matching the original OPPO/VIVO mobile phone, the TYPE-C output end is connected to the OPPO/VIVO mobile phone. At this time, the 6 pin of the OV identification chip U2 will give a handshake signal to the charger, prompting charging The device is an original mobile phone, and the fast charging function is turned on; when the TYPE-C output terminal is connected to a Huawei mobile phone, the pin CC determines the charging protocol of the mobile phone by detecting the charging protocol timing. When it is judged that it is a Huawei mobile phone charging protocol, OV The pin 3 of the identification chip U2 is pulled up, so that the pin CC2 becomes the pull-up mode, and then the dual-resistor pull-up fast charging mode is completed; when the TYPE-C output is connected to the Samsung mobile phone, the pin CC passes the detection of the charging protocol. The timing is used to determine the charging protocol of the mobile phone. When it is judged to be the charging protocol of the Samsung mobile phone, the pin 3 of the OV identification chip U2 is suspended, so that the pin CC2 becomes the floating mode, and then the single-resistor pull-up fast charging mode is completed. At the same time, the fast charging function of Xiaomi mobile phones can be realized in both modes.

The utility model integrates an OV identification chip and two 56K protocol identification resistors at the TYPE-C output end of the data line, one of which is controlled by the OV identification chip, and the control process is connected according to the TYPE-C output end The mobile phone is automatically recognized to realize fast charging of various mobile phones such as Huawei, Samsung, OPPO, VIVO, Xiaomi, etc. The implementation structure of the entire circuit is very simple, low cost, high reliability, and very convenient to use.

Description of drawings

Fig. 1 is the circuit principle diagram of the utility model.

Detailed ways

In this embodiment, referring to FIG. 1 , the circuit structure for automatically recognizing various mobile phone fast charging protocols based on the TYPE-C interface includes a USB input terminal and a TYPE-C output terminal, and the power supply in the data line passes between the two. It is characterized in that: the TYPE-C output end is provided with an OV identification chip U2 for implementing the OPPO fast charging protocol and the VIVO fast charging protocol, and two protocol identification resistors R2 and R3 with a resistance value of 56K, OV identification The model of the chip U2 is SOT23-6. Due to the existence of the OV identification chip, it can be directly used for fast charging of OPPO mobile phones and VIVO mobile phones; resistor R3 and resistor R2 are respectively connected to the pin CC and pin CC2 of the TYPE-C output. , the other end of the resistor R2 is connected to the pin 3 of the OV identification chip U2, and the OV identification chip U2 forms an on-off control structure for the resistor R2; the other end of the resistor R3 is directly connected to the VBUS pin of the USB input end through the power line of the data line , so that the resistor R3 is always in a high-level pull-up state; when the OV identification chip U2 is connected to the protocol identification resistor R2, it forms a double-resistor (ie, the resistor R2 and the resistor R3) to pull up to realize the Huawei fast charging protocol. At this time, you can To achieve super fast charging of Huawei mobile phones, when the OV identification chip U2 disconnects its connected protocol identification resistor R2, a single resistance pull-up is formed to realize the Samsung fast charging protocol. At this time, the QC fast charging of Samsung mobile phones can be realized.

The pin 5 of the OV identification chip U2 is connected to a voltage stabilization circuit, which is used to supply power to the OV identification chip U2, while preventing high voltage from damaging the OV identification chip U2; the voltage stabilization circuit is connected to the power line of the data line; the voltage stabilization circuit includes: There is a 5V Zener diode D1 and a resistor R1. The pin 5 of the OV identification chip U2 is connected to the resistor R1 and the cathode of the Zener diode D1. The positive pole of the Zener diode D1 is connected to a capacitor C2. The capacitor C2 is connected to the other end of the resistor R1. Connect to the power line of the data line together, and the positive electrode of the Zener diode is grounded; the model of the OV identification chip U2 is YD19080 (or ST1551).

The pin 6 of the OV identification chip U2 is connected to the pin ID of the USB input terminal through a resistor R9, and the pin 2 of the OV identification chip U2 is grounded.

The pin 1 of the OV identification chip U2 is directly connected to the pin CC of the TYPE-C output end, and the pin CC, the resistor R3 and the pin 1 of the OV identification chip U2 are grounded together through a resistor R4.

The pin 5 of the OV identification chip U2 is grounded through a capacitor C1 for filtering.

Working principle: When the USB input end is inserted into the charger matching the original OPPO/VIVO mobile phone, the TYPE-C output end is connected to the OPPO/VIVO mobile phone. At this time, the 6 pin of the OV identification chip U2 will give a handshake signal to the charger, prompting charging The device is an original mobile phone, and the fast charging function is turned on; when the TYPE-C output terminal is connected to a Huawei mobile phone, the pin CC determines the charging protocol of the mobile phone by detecting the charging protocol timing. When it is judged that it is a Huawei mobile phone charging protocol, OV The pin 3 of the identification chip U2 is pulled up, so that pin CC2 becomes the pull-up mode, and then the dual-resistor pull-up fast charging mode is completed, which can be used for super fast charging of Huawei mobile phones; when the TYPE-C output is connected to a Samsung mobile phone, At this time, pin CC judges the charging protocol of the mobile phone by detecting the charging protocol sequence. When it is judged that it is the charging protocol of Samsung mobile phone, the pin 3 of the OV identification chip U2 is suspended, so that the pin CC2 becomes the floating mode, and then completes the single The resistance pull-up fast charging mode can be used for QC fast charging of Samsung mobile phones. In addition, the data cable can also be directly used for fast charging of Xiaomi mobile phones.

The present utility model has been described in detail above. The above descriptions are only preferred embodiments of the present utility model, and should not limit the scope of implementation of the present utility model. It still falls within the scope of the present invention.

Claims (5)

1. A circuit structure based on the automatic identification of multiple mobile phone fast charging protocols based on the TYPE-C interface, including a USB input terminal and a TYPE-C output terminal, connected between the two by the power cord in the data line, it is characterized in that: The TYPE-C output end is provided with an OV identification chip U2 for implementing the OPPO fast charging protocol and VIVO fast charging protocol, and two protocol identification resistors R2 and R3 with a resistance value of 56K; the resistor R3 and the resistor R2 are respectively connected to the TYPE- C output pin CC and pin CC2, where the other end of the resistor R2 is connected to the pin 3 of the OV identification chip U2, and the OV identification chip U2 forms an on-off control structure for the resistor R2; the other end of the resistor R3 directly passes the data The power line of the cable is connected to the VBUS pin of the USB input terminal, so that the resistor R3 is always in a high-level pull-up state; the OV identification chip U2 is connected to the protocol identification resistor R2 to form a double-resistor pull-up to realize the Huawei fast charging protocol, OV When the identification chip U2 disconnects its connected protocol identification resistor R2, a single-resistor pull-up is formed to realize the Samsung fast charging protocol. 2. the circuit structure of automatically identifying multiple mobile phone fast charging protocols based on the TYPE-C interface according to claim 1, it is characterized in that: the pin 5 of the described OV identification chip U2 is connected with a voltage regulator circuit, the voltage regulator circuit Connect the power line of the data line; the voltage regulator circuit includes a 5V zener diode D1 and a resistor R1, the pin 5 of the OV identification chip U2 is connected to the resistor R1 and the negative electrode of the zener diode D1, and the positive electrode of the zener diode D1 is connected to a The capacitor C2 is connected to the power line of the data line together with the other end of the resistor R1, and the positive electrode of the Zener diode is grounded; the model of the OV identification chip U2 is YD19080 or ST1551. 3. the circuit structure of automatically identifying multiple mobile phone fast charging protocols based on TYPE-C interface according to claim 2, is characterized in that: the pin 6 of OV identification chip U2 connects the pin ID of the USB input end by a resistance R9, Pin 2 of the OV identification chip U2 is grounded. 4. the circuit structure of automatically identifying multiple mobile phone fast charging protocols based on TYPE-C interface according to claim 2, it is characterized in that: the pin 1 of described OV identification chip U2 is directly with the pin CC of TYPE-C output end Connection, pin CC, resistor R3 and pin 1 of the OV identification chip U2 are grounded together through a resistor R4. 5. The circuit structure for automatically identifying multiple mobile phone fast charging protocols based on the TYPE-C interface according to claim 2, wherein the pin 5 of the OV identification chip U2 is grounded through a capacitor C1.

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