CN210404766U

CN210404766U - Charging circuit

Info

Publication number: CN210404766U
Application number: CN201920997727.XU
Authority: CN
Inventors: 覃福晓; 杨坤
Original assignee: Shenzhen Aichuangli Technology Co Ltd
Current assignee: Shenzhen Aichuangli Technology Co Ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-04-24
Anticipated expiration: 2029-06-28

Abstract

The utility model relates to the field of electronic technology, indicate a charging circuit especially, the utility model discloses be TP 4056's sixth chip U37, second plug connector J6, Type-C port U38 by the model and constitute, for current USB Type-C charging circuit, reduce a plurality of components such as MOSFET, detection resistance or isolation diode group, circuit layout is simplified on the basis that does not functionally cut down promptly, consequently, charging circuit's production cycle reduces greatly to reach the effect that reduces the cost of manufacture.

Description

Charging circuit

Technical Field

The utility model relates to the field of electronic technology, indicate a charging circuit especially.

Background

USB (Universal Serial Bus) is an external Bus standard, is used to standardize the connection and communication between terminal devices such as computers and mobile phones and external devices, and is an interface technology applied in the field of communication, including various types or specifications of interfaces such as USB Type-C.

The USB Type-C is a popular USB interface in the industry at present and is also the development direction of I/O (Input/Output) interfaces of terminal equipment such as follow-up computers and mobile phones, the USB Type-C can support plugging on the front side and the back side, and signals for transmitting data are stronger.

The existing USB Type-C charging circuit is composed of a plurality of MOSFETs, detection resistors or isolation diodes, and is complex in design, high in cost and long in production period.

Disclosure of Invention

In order to solve the problem, the utility model provides a charging circuit includes multiple functional integrated chip, and is with low costs, and the design is simple and easy, and production cycle reduces greatly.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a charging circuit, include the model and be TP 4056's sixth chip U37, second plug connector J6, Type-c port U38, the VBUS pin of port U38 all with sixth chip U37's No. 4 pins, No. 8 pins are connected, sixth chip U37's No. 1 pin and the No. 1 pin of J6 of second connector are connected, sixth chip U37's No. 2 pin, No. 1 pin, No. 3 pins, No. 9 pin ground connection, second connector J6's No. 2 pin ground connection.

Furthermore, a forty-third diode D43 is further included, the anode of the forty-third diode D43 is connected to the VBUS pin of the port U38, the cathode of the forty-third diode D43 is connected to the pins No. 4 and No. 8 of the sixth chip U37, and the pins No. 4 and No. 8 of the sixth chip U37 are connected to the +5V port.

Furthermore, a thirteenth resistor R93 is further included, and the CC pin of the Type-c port U38 is grounded through the thirteenth resistor R93.

Furthermore, the circuit also comprises a fourteenth resistor R92, wherein one end of the fourteenth resistor R92 is connected with the No. 2 pin of the sixth chip U37, and the other end of the fourteenth resistor R92 is grounded.

Furthermore, a twenty-first capacitor C134 is further included, one end of the twenty-first capacitor C134 is connected with the No. 5 pin of the sixth chip U37, and the other end of the twenty-first capacitor C134 is grounded.

The beneficial effects of the utility model reside in that:

the utility model discloses being TP 4056's sixth chip U37, second plug connector J6, Type-C port U38 by the model and forming, for current USB Type-C charging circuit, reduce a plurality of components such as MOSFET, detection resistance or isolation diode group, circuit layout obtains simplifying on the basis of not cutting down in the function promptly, consequently, charging circuit's production cycle reduces greatly to reach the effect that reduces the cost of manufacture.

Drawings

Fig. 1 is a circuit diagram of the present invention.

Detailed Description

Please refer to fig. 1, the utility model discloses a charging circuit, include that the model is TP 4056's sixth chip U37, second plug connector J6, Type-c port U38, port U38's VBUS pin all with sixth chip U37's No. 4 pins, No. 8 pins are connected, sixth chip U37's No. 1 pin and the No. 1 pin of the J6 of second connector are connected, sixth chip U37's No. 2 pin, No. 1 pin, No. 3 pin, No. 9 pin ground connection, second connector J6's No. 2 pin ground connection.

The utility model discloses a theory of use as follows:

The second connector is connected with the battery, specifically, when the sixth chip U37 is in a disabled or sleep mode, the leakage current of the pin of the second connector J6 is smaller than a certain value, and the sixth chip U37 supplies a charging current to the battery.

Furthermore, a forty-third diode D43 is further included, the anode of the forty-third diode D43 is connected with the VBUS pin of the port U38, the cathode of the forty-third diode D43 is connected with the pin No. 4 and the pin No. 8 of the sixth chip U37, and the pin No. 4 and the pin No. 8 of the sixth chip U37 are connected with a +5V port; adopt above-mentioned scheme, the No. 4 pin of sixth chip U37, No. 8 pin connection 5V port have more than 5V in order to guarantee the input voltage of sixth chip U37, avoid the unable normal work of sixth chip U37 or the phenomenon that charging current reduces to appear, on the voltage on the forty-third diode D43 assurance 5V port can't enter into Type-c port U38, avoid the condition that Type-c port U38 damaged.

Furthermore, a thirteenth resistor R93 is further included, and the CC pin of the Type-c port U38 is grounded through the thirteenth resistor R93; by adopting the scheme, the digital communication of the Type-c port U38 is realized.

Furthermore, the circuit also comprises a fourteenth resistor R92, wherein one end of the fourteenth resistor R92 is connected with the No. 2 pin of the sixth chip U37, and the other end of the fourteenth resistor R92 is grounded; with the above scheme, the sixth chip U37 may be connected to an external resistor to ground to program the charging current.

Furthermore, the circuit also comprises a twenty-first capacitor C134, wherein one end of the twenty-first capacitor C134 is connected with a No. 5 pin of a sixth chip U37, and the other end of the twenty-first capacitor C134 is grounded; with the above arrangement, the twenty-first capacitor C134 is a filter capacitor for smoothing dc output.

The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.

Claims

1. The utility model provides a charging circuit, its characterized in that, include the sixth chip U37 that the model is TP4056, second plug connector J6, Type-c port U38, the VBUS pin of port U38 all is connected with No. 4 pin, No. 8 pin of sixth chip U37, No. 1 pin of the No. 1 pin and the J6's of second connector of sixth chip U37 is connected, No. 2 pin, No. 1 pin, No. 3 pin, No. 9 pin ground connection of sixth chip U37, No. 2 pin ground connection of second connector J6.

2. A charging circuit as claimed in claim 1, wherein: the high-voltage power supply further comprises a forty-third diode D43, wherein the anode of the forty-third diode D43 is connected with a VBUS pin of the port U38, the cathode of the forty-third diode D43 is connected with a No. 4 pin and a No. 8 pin of the sixth chip U37, and the No. 4 pin and the No. 8 pin of the sixth chip U37 are connected with a +5V port.

3. A charging circuit as claimed in claim 1, wherein: the device also comprises a thirteenth resistor R93, and the CC pin of the U38 of the Type-c port is grounded through the thirteenth resistor R93.

4. A charging circuit as claimed in claim 1, wherein: the circuit also comprises a fourteenth resistor R92, wherein one end of the fourteenth resistor R92 is connected with the No. 2 pin of the sixth chip U37, and the other end of the fourteenth resistor R92 is grounded.

5. A charging circuit as claimed in claim 1, wherein: the circuit also comprises a twenty-first capacitor C134, one end of the twenty-first capacitor C134 is connected with the No. 5 pin of the sixth chip U37, and the other end of the twenty-first capacitor C134 is grounded.