USB quick-charging wall socket with 45WA + C

Abstract

The utility model discloses a USB fast charging wall socket with 45WA + C. The USB fast charging wall socket comprises a housing, the housing is internally provided with a cavity, the housing comprises a panel and a base, the panel is provided with jacks and output ports, the cavity is internally provided with a fast charging module and a socket hardware assembly, and the socket hardware assembly is provided with a power supply. The quick charging module is electrically connected with the socket hardware assembly through a plug-in structure; the jacks comprise at least one group of two-hole jacks and three-hole jacks, and the output ports comprise two or more than two USB-A and / or Type-C charging output ports; the fast charging module is composed of a rectification filtering module, a power supply control module, a synchronous rectification module and a fast charging output module. The utility model belongs to the technical field of sockets, and particularly provides a USB quick-charging wall socket with 45WA + C, which is used for meeting the quick-charging requirement of the socket.

Description

TECHNICAL FIELD

[0001] The utility model belongs to socket technical field, specifically point to a kind of USB fast charging wall socket with 45WA+C. BACKGROUND

[0002] With the rapid development of intelligent products, people's demand for convenience and practicality is increasing, and traditional sockets cannot meet the power supply function under different conditions. With the widespread use of intelligent products, the charging power requirement of charger is getting higher and higher, and traditional ordinary 5V charging cannot meet the fast charging demand of mobile phone. INVENTION CONTENT

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a USB fast charging wall socket with 45WA+C, which is used to solve the fast charging demand of socket.

[0004] The technical scheme adopted by the present application is as follows:

[0005] The present application provides a USB fast charging wall socket with 45WA+C, which comprises a shell, a cavity is provided in the shell, the shell comprises a panel and a base, a jack and an output port are provided on the panel, a fast charging module and a socket hardware assembly are provided in the cavity, the socket hardware assembly comprises a neutral line socket hardware, a ground line socket hardware, a live line socket hardware and a hardware support, the fast charging module and the socket hardware assembly are electrically connected through a plug-in structure;

[0006] The jack comprises at least one group of two-hole jacks and three-hole jacks, and the output port comprises two or more USB-A and / or Type-C charging output ports;

[0007] The fast charging module is composed of a rectifier filter module, a power control module, a synchronous rectification module and a fast charging output module;

[0008] The rectifier filter module is used to convert alternating current into smooth direct current, filter out noise and interference in power grid, supply power to power control module and provide stable direct current input;

[0009] The power control module dynamically adjusts output power according to the actual demand of charging equipment, provides overvoltage / undervoltage protection, overcurrent protection and overtemperature protection, and supplies power to the synchronous rectification module through the power control module;

[0010] The synchronous rectification module is used for rectification and power supply for the fast charging output module;

[0011] The fast charging output module is used to support 45W fast charging power output and compatible with multiple fast charging protocols.

[0012] Preferably, the rectifier and filter module consists of a varistor MOV1, a fuse F1, a common-mode inductor L1, an X capacitor CX1, a rectifier bridge BD1, an electrolytic capacitor EC1, and an electrolytic capacitor EC2. The 220VAC AC mains power is connected to the common-mode inductor L1 through the varistor MOV1 and the fuse F1 to filter interference signals. Then, it is connected to the rectifier bridge BD1 through the X capacitor CX1 to rectify the AC power into DC power, which is then connected to the electrolytic capacitors EC1 and EC2 for filtering and to supply power to the power control module.

[0013] Preferably, the power control module comprises resistors R1, R2, R5, R6, R7, R8, R10, R13, R15, R16, R17, and R18, capacitors C2 and C8, Y capacitor CY1, diodes D1 and ZD1, transformer T1, power chip IC1, MOSFET Q2, and optocoupler U2. One end of the voltage output from the rectifier and filter module supplies power to the main winding of transformer T1A through an RC snubber circuit composed of resistors R1, R2, capacitor C2, resistor R6, and diode D1. The other end of the voltage output from the rectifier and filter module is connected to one end of resistor R8 through resistors R5 and R7. The feedback winding of transformer T1 is connected to pin 5 of power chip IC1 through diode ZD1 and resistor R8. The power supply IC1 is powered by the following components: pin 1 of IC1 is connected to ground; pin 2 of IC1 is connected to the optocoupler receiver U2B and connected to ground in parallel with capacitor C8 to provide feedback voltage to IC1; pin 3 of IC1 is connected to ground through resistor R15; pin 6 of transformer T1 is connected to the drain of MOSFET Q2; the source of MOSFET Q2 is connected to ground at one end through parallel resistors R17 and R18, and the other end is connected to pin 4 of IC1 through resistor R16 for current sampling to ensure power stability; the gate of MOSFET Q2 is connected to pin 6 of IC1 through resistors R10 and R13 and diode D2; the secondary winding of transformer T1 powers the subsequent synchronous rectification module through the power control module; capacitor CY1 is connected across the primary and secondary grounds to reduce EMC interference.

[0014] Preferably, the synchronous rectification module includes resistors R3, R4, R9, R12, and R14, a synchronous rectification chip U1, a MOSFET Q1, and capacitors C1, C3, C4, and C5. One end of the secondary winding of transformer T1 is connected to the optocoupler output terminal U2A via resistor R12 and is connected to ground in parallel with resistor R14. U2A is connected to pin 6 of protocol chip U3, driving optocoupler U2 to provide feedback to the power control terminal. One end of the drain of MOSFET Q1 is connected in parallel with pins 1 and 6 of synchronous rectification chip U1, and the other end is connected to the source of MOSFET Q1 via capacitor C1 and resistor R3 for filtering. The gate of MOSFET Q1 is connected to pin 5 of U1. Pins 2 and 3 of U1 are connected in parallel with resistor R9 to ground. Pin 4 of U1 is connected to ground via capacitor C5. The secondary voltage of transformer T1 is filtered by electrolytic capacitors C3 and C4 in parallel and resistor R4 to provide power to the subsequent fast charging output module (protocol chip).

[0015] Preferably, the fast charging output module includes a protocol chip U3, capacitors C7, C11, C12, and C13, MOSFETs Q3 and Q4, resistors R19, R20, R21, R22, and R24, inductor L2, resistors RS1 and RS2, and a temperature resistor NCR2. The voltage output from the synchronous rectification module is connected in parallel to pins 27, 28, 29, and 30 of the protocol chip U3, and connected to ground through capacitor C7, and also connected to the drain of MOSFET Q3. Pin 1 of the protocol chip U3 is connected to pin 1 of USB-A1 via resistor R20 for USB-A1 port voltage detection; pin 2 of U3 is connected to the gate of MOSFET Q4; pin 5 of U3 is connected to pins 10, 11, 12, 13, and 14 via inductor L2 and capacitor C13 in parallel, providing output voltage feedback and also connecting to the drain of MOSFET Q4, and connected to ground via electrolytic capacitor C4 and resistors RS1 and RS2; pin 6 of U3 is connected to the optocoupler output terminal U2A to drive the optocoupler; pin 7 of U3 is connected to capacitor C1... Pin 1 and resistor R21 are connected to the optocoupler output terminal U2A; pin 8 of U3 is connected to the optocoupler output terminal U2A through capacitor C12 and resistor R22; pin 9 of U3 is connected to ground through parallel temperature resistors R2 and R24 for temperature detection; pin 15 of U3 is connected to one end of resistor RS2, and pin 16 of U3 is connected to the other end of resistor RS2 for USB-A1 current detection; pin 17 of U3 is connected to one end of resistor RS1, and pin 18 of U3 is connected to the other end of resistor RS1 for TYPE-C current detection; U3's... Pin 19 is connected in parallel to pins 5 and 7 of TYPE-C; pin 20 of U3 is connected in parallel to pins 6 and 8 of TYPE-C; pin 21 of U3 is connected to pin 2 of USB-A1; pin 22 of U3 is connected to pin 3 of USB-A1; pin 25 of U3 is connected to pin 4 of TYPE-C; pin 26 of U3 is connected to pin 10 of TYPE-C; pin 31 of U3 is connected in parallel to pins 2 and 11 of TYPE-C through resistor R19, and is also connected to the source of MOSFET Q3; pin 32 of U3 is connected to the gate of MOSFET.

[0016] The beneficial effects of this utility model by adopting the above structure are as follows:

[0017] In addition to its built-in traditional five-hole socket power supply, this socket also features 45W A+C fast charging functionality, eliminating the need to purchase a separate charger. Simply use the charging cable to charge your devices. This product has one USB-A port and one USB-C port, allowing you to charge multiple devices simultaneously. It boasts excellent compatibility with mainstream mobile phones and other power-required products, making it convenient for everyday household use. Attached Figure Description

[0018] Figure 1A schematic diagram of the overall structure of a USB fast charging wall socket with 45WA+C provided for this solution;

[0019] Figure 2 Another structural diagram of a USB fast charging wall socket with 45W A+C provided for this solution;

[0020] Figure 3 for Figure 1 Explosion structure composition diagram;

[0021] Figure 4 The schematic diagram of the 45W A+C fast charging module in the application;

[0022] Figure 5 This is a schematic diagram of the rectifier and filter module in this application;

[0023] Figure 6 This is a schematic diagram of the power control module in this application;

[0024] Figure 7 This is a schematic diagram of the synchronous rectification module in this application;

[0025] Figure 8 This is a schematic diagram of the fast charging output module in this application.

[0026] The meanings of the labels in the attached diagram are as follows:

[0027] 1. Panel, 2. Base, 3. Fast charging module, 4. Socket hardware components, 5. Socket, 6. Output port. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0029] Example 1

[0030] Please refer to Figures 1-3 As shown, this embodiment provides a USB fast charging wall socket with 45W A+C, including a housing with a cavity inside. The housing consists of a panel 1 and a base 2. The panel 1 has a socket 5 and an output port 6. The cavity contains a fast charging module 3 and a socket hardware assembly 4. The socket hardware assembly 4 includes a neutral wire socket hardware, a ground wire socket hardware, a live wire socket hardware, and a hardware bracket. The socket hardware assembly 4 is arranged together to form a two-pole and / or three-pole AC socket. The fast charging module and the socket hardware assembly 4 are electrically connected through a plug-in structure.

[0031] like Figure 2As shown, the socket 5 includes at least one set of two-hole sockets and three-hole sockets, and the output port 6 includes two or more USB-A and / or Type-C charging output ports.

[0032] refer to Figure 3 As shown, the plug-in structure includes neutral, live, and ground sockets respectively located on the circuit board, and conductive parts respectively located on the neutral, ground, and live socket hardware. The socket 5 is plugged into the conductive parts. It also includes a safety door and a return spring. The hardware bracket is provided with a combination assembly slot for two-pole socket safety doors and three-pole socket safety doors, which are respectively installed inside.

[0033] refer to Figure 4 As shown, the fast charging module consists of a rectifier and filter module, a power control module, a synchronous rectification module, and a fast charging output module;

[0034] The rectifier and filter module is used to convert AC power into smooth DC power, while filtering out noise and interference in the power grid, providing power to the power control module and providing a stable DC input.

[0035] The power control module dynamically adjusts the output power according to the actual needs of the charging equipment, and provides overvoltage / undervoltage protection, overcurrent protection and overtemperature protection. The power control module supplies power to the synchronous rectification module.

[0036] The synchronous rectification module is used for rectification and to supply power to the fast charging output module;

[0037] The fast charging output module is used to support 45W fast charging power output and is compatible with multiple fast charging protocols.

[0038] like Figure 5 As shown, the rectifier and filter module consists of a varistor MOV1, a fuse F1, a common-mode inductor L1, an X capacitor CX1, a rectifier bridge BD1, an electrolytic capacitor EC1, and an electrolytic capacitor EC2. The 220VAC AC mains power is connected to the common-mode inductor L1 through the varistor MOV1 and the fuse F1 to filter interference signals. Then, it is connected to the rectifier bridge BD1 through the X capacitor CX1 to rectify the AC power into DC power, which is then connected to the electrolytic capacitors EC1 and EC2 for filtering and to supply power to the power control module.

[0039] like Figure 6As shown, the power control module consists of resistors R1, R2, R5, R6, R7, R8, R10, R13, R15, R16, R17, and R18; capacitors C2 and C8; a Y capacitor CY1; diodes D1 and ZD1; a transformer T1; a power chip IC1; a MOSFET Q2; and an optocoupler U2. One end of the voltage output from the rectifier and filter module supplies power to the main winding of transformer T1A through an RC snubber circuit composed of resistors R1 and R2, capacitor C2, resistor R6, and diode D1. The other end of the voltage output from the rectifier and filter module is connected to one end of resistor R8 through resistors R5 and R7. The feedback winding of transformer T1 is connected to pin 5 of power chip IC1 through diode ZD1 and resistor R8. The power supply IC1 is powered by the following components: pin 1 of IC1 is connected to ground; pin 2 of IC1 is connected to the optocoupler receiver U2B and connected to ground in parallel with capacitor C8 to provide feedback voltage to IC1; pin 3 of IC1 is connected to ground through resistor R15; pin 6 of transformer T1 is connected to the drain of MOSFET Q2; the source of MOSFET Q2 is connected to ground at one end through parallel resistors R17 and R18, and the other end is connected to pin 4 of IC1 through resistor R16 for current sampling to ensure power stability; the gate of MOSFET Q2 is connected to pin 6 of IC1 through resistors R10 and R13 and diode D2; the secondary winding of transformer T1 powers the subsequent synchronous rectification module through the power control module; capacitor CY1 is connected across the primary and secondary grounds to reduce EMC interference.

[0040] like Figure 7 As shown, the synchronous rectification module includes resistors R3, R4, R9, R12, and R14, a synchronous rectification chip U1, a MOSFET Q1, and capacitors C1, C3, C4, and C5. One end of the secondary winding of transformer T1 is connected to the optocoupler output terminal U2A through resistor R12 and is connected to ground in parallel with resistor R14. U2A is connected to pin 6 of protocol chip U3, driving optocoupler U2 to provide feedback to the power control terminal. One end of the MOSFET Q1 is connected to pins 1 and 6 of synchronous rectification chip U1 in parallel, and the other end is connected to the source of MOSFET Q1 through capacitor C1 and resistor R3 for filtering. The gate of MOSFET Q1 is connected to pin 5 of U1. Pins 2 and 3 of U1 are connected to ground in parallel with resistor R9. Pin 4 of U1 is connected to ground through capacitor C5. The secondary voltage of transformer T1 is filtered through parallel electrolytic capacitors C3 and C4 and resistor R4 to provide power to the subsequent fast charging output module (protocol chip).

[0041] like Figure 8As shown, the fast charging output module includes a protocol chip U3, capacitors C7, C11, C12, and C13, MOSFETs Q3 and Q4, resistors R19, R20, R21, R22, and R24, inductor L2, resistors RS1 and RS2, and a temperature resistor NCR2. The voltage output from the synchronous rectification module is connected in parallel to pins 27, 28, 29, and 30 of the protocol chip U3, and is connected to ground through capacitor C7, and also to the drain of MOSFET Q3. Pin 1 of chip U3 is connected to pin 1 of USB-A1 via resistor R20 for USB-A1 port voltage detection; pin 2 of U3 is connected to the gate of MOSFET Q4; pin 5 of U3 is connected to pins 10, 11, 12, 13, and 14 via inductor L2 and capacitor C13 in parallel, providing output voltage feedback and also connecting to the drain of MOSFET Q4, and connected to ground via electrolytic capacitor C4 and resistors RS1 and RS2; pin 6 of U3 is connected to the optocoupler output U2A to drive the optocoupler; pin 7 of U3 is connected to capacitor C1... Pin 1 and resistor R21 are connected to the optocoupler output terminal U2A; pin 8 of U3 is connected to the optocoupler output terminal U2A through capacitor C12 and resistor R22; pin 9 of U3 is connected to ground through parallel temperature resistors R2 and R24 for temperature detection; pin 15 of U3 is connected to one end of resistor RS2, and pin 16 of U3 is connected to the other end of resistor RS2 for USB-A1 current detection; pin 17 of U3 is connected to one end of resistor RS1, and pin 18 of U3 is connected to the other end of resistor RS1 for TYPE-C current detection; U3's... Pin 19 is connected in parallel to pins 5 and 7 of TYPE-C; pin 20 of U3 is connected in parallel to pins 6 and 8 of TYPE-C; pin 21 of U3 is connected to pin 2 of USB-A1; pin 22 of U3 is connected to pin 3 of USB-A1; pin 25 of U3 is connected to pin 4 of TYPE-C; pin 26 of U3 is connected to pin 10 of TYPE-C; pin 31 of U3 is connected in parallel to pins 2 and 11 of TYPE-C through resistor R19, and is also connected to the source of MOSFET Q3; pin 32 of U3 is connected to the gate of MOSFET.

[0042] In the above solution, through the communication matching protocol between the charging cable and the load device, fast charging up to 45W (5V / 9V / 12V / 15V 3A, 20V 2.25A) can be achieved at the TYPE-C port, and fast charging up to 30W (5V / 9V 3A, 12V 2.5A, 15V 2A, 20V 1.5A) can be achieved at the USB-A port. The product supports charging protocols such as PD2.0 / 3.0, QC2.0 / QC3.0, and Huawei FCP. When either the USB-A or TYPE-C port is connected to a device, either the USB-A or TYPE-C port can achieve independent fast charging. When two or more USB ports are connected to a device simultaneously, the output voltage of the USB-A port drops to a maximum of 5V / 2A, and the output of the TYPE-C port drops to a maximum of 5V / 2.4A, 9V / 3A, 12V / 2.5A, 15V / 2A, 20V / 1.5A, and a maximum of 30W to power the device.

[0043] It should be noted that although embodiments of the present invention have been shown and described, those skilled in the art who design similar structures and embodiments without departing from the spirit of the present invention should all fall within the protection scope of the present invention.

Claims

1. A USB fast charging wall socket with 45WA+C, comprising a shell, a cavity is arranged in the shell, the shell comprises a panel and a base, a socket and an output port are arranged on the panel, a fast charging module and a socket hardware assembly are arranged in the cavity, the socket hardware assembly comprises a neutral line socket hardware, a ground line socket hardware, a live line socket hardware and a hardware support, the fast charging module and the socket hardware assembly are electrically connected through a plug-in structure, characterized in that: The plug-in hole comprises at least one set of two-hole plug-in holes and three-hole plug-in holes, and the output port comprises two or more USB-A and / or Type-C charging output ports; ​ The fast charging module is composed of a rectification filtering module, a power supply control module, a synchronous rectification module and a fast charging output module; the rectification filtering module is used for converting alternating current into smooth direct current, filtering out noise and interference in the power grid, and supplying power to the power supply control module and providing stable direct current input; the power supply control module dynamically adjusts the output power according to the actual demand of the charging equipment, provides overvoltage / undervoltage protection, overcurrent protection and overtemperature protection, and supplies power to the synchronous rectification module through the power supply control module; the synchronous rectification module is used for rectification and supplies power to the fast charging output module; and the fast charging output module is used for supporting 45W fast charging power output and being compatible with multiple fast charging protocols.

2. The USB fast charging wall socket with 45W A+C of claim 1, wherein: The rectification filtering module is composed of a pressure-sensitive resistor MOV1, a fuse F1, a common-mode inductor L1, an X capacitor CX1, a rectifier bridge BD1, an electrolytic capacitor EC1 and an electrolytic capacitor EC2; 220V AC power is connected to the common-mode inductor L1 through the pressure-sensitive resistor MOV1 and the fuse F1, and then connected to the rectifier bridge BD1 through the X capacitor CX1; after alternating current is rectified into direct current, the direct current is connected to the electrolytic capacitors EC1 and EC2 for filtering and supplying power to the power supply control module.

3. The USB fast charging wall socket with 45W A+C of claim 2, wherein: The power supply control module is composed of resistors R1, R2, R5, R6, R7, R8, R10, R13, R15, R16, R17, R18, capacitors C2 and C8, a Y capacitor CY1, diodes D1 and ZD1, a transformer T1, a power supply chip IC1, a MOS tube Q2 and an optocoupler U2; one end of the voltage output by the rectification filtering module is supplied to the main winding of the transformer T1A through an RC absorption circuit composed of the resistors R1 and R2 and the capacitor C2, and the resistors R6, the diode D1 and the capacitor C8; the other end of the voltage output by the rectification filtering module is connected to one end of the resistor R8 through the resistors R5 and R7; the feedback winding of the transformer T1 is connected to the resistor R8 through the diode ZD1 and the 5th pin of the power supply chip IC1, thereby supplying power to the power supply chip IC1; The 1st pin of the power supply chip IC1 is connected to the ground; the 2nd pin of the power supply chip IC1 is connected to the receiving end U2B of the optocoupler and connected to the ground in parallel with the capacitor C8, thereby feeding back the voltage of IC1; The 3rd pin of the power supply chip IC1 is connected to the ground through the resistor R15; the 6th pin of the transformer T1 is connected to the drain of the MOS tube Q2; the source of the MOS tube Q2 is connected to the ground through one end of the parallel resistors R17 and R18 and connected to the 4th pin of the power supply chip IC1 through the resistor R16; the gate of the MOS tube Q2 is connected to the 6th pin of IC1 through the resistors R10 and R13 and the diode D2; the secondary winding of the T1 transformer is supplied with power by the power supply control module to supply power to the subsequent synchronous rectification module; and the Y capacitor CY1 is connected across the primary and secondary grounds.

4. The USB fast charging wall socket with 45W A+C of claim 3, wherein: The synchronous rectification module includes resistors R3, R4, R9, R12, R14, a synchronous rectification chip U1, a MOS tube Q1, capacitors C1, C3, C4 and C5. One end of a secondary side of the transformer T1 is connected to a photo-coupler output end U2A through the resistor R12 and is connected to the ground in parallel with the resistor R14. The drain of the MOS tube Q1 is connected to the pins 1 and 6 of the synchronous rectification chip U1 in parallel, and the other end is connected to the source of the MOS tube Q1 through the capacitor C1 and the resistor R3. The gate of the MOS tube Q1 is connected to the pin 5 of U1. The pins 2 and 3 of U1 are connected to the ground in parallel with the resistor R9. The pin 4 of U1 is connected to the ground through the capacitor C5. The secondary side voltage of the transformer T1 is provided as a power supply for the fast charging output module through the parallel connection of the electrolytic capacitors C3 and C4 and the resistor R4.

5. The USB fast charging wall socket with 45W A+C of claim 4, wherein: The fast charging output module includes a protocol chip U3, capacitors C7, C11, C12, C13, MOS tubes Q3 and Q4, resistors R19, R20, R21, R22, R24, an inductor L2, resistors RS1 and RS2 and a temperature resistor NCR2. The voltage output by the synchronous rectification module is connected to the pins 27, 28, 29 and 30 of the protocol chip U3 in parallel and is connected to the ground through the capacitor C7, and is also connected to the drain of the MOS tube Q3. The pin 1 of the protocol chip U3 is connected to the pin 1 of the USB-A1 through the resistor R20 to detect the voltage of the USB-A1 port. The pin 2 of U3 is connected to the gate of the MOS tube Q4. The pin 5 of U3 is connected to the capacitor C13 through the inductor L2 and is connected to the pins 10, 11, 12, 13 and 14 of U3 in parallel to feedback the output voltage, and is also connected to the drain of the MOS tube Q4 and is connected to the resistors RS1 and RS2 to the ground through the electrolytic capacitor C4. The pin 6 of U3 is connected to the photo-coupler output end U2A to drive the photo-coupler. The pin 7 of U3 is connected to the photo-coupler output end U2A through the capacitor C11 and the resistor R21. The pin 8 of U3 is connected to the photo-coupler output end U2A through the capacitor C12 and the resistor R22. The pin 9 of U3 is connected to the ground through the parallel connection of the temperature resistor R2 and the resistor R24 to detect the temperature. The pin 15 of U3 is connected to one end of the resistor RS2, and the pin 16 of U3 is connected to the other end of the resistor RS2 to detect the current of the USB-A1. The pin 17 of U3 is connected to one end of the resistor RS1, and the pin 18 of U3 is connected to the other end of the resistor RS1 to detect the current of the TYPE-C. The pin 19 of U3 is connected to the pins 5 and 7 of the TYPE-C in parallel. The pin 20 of U3 is connected to the pins 6 and 8 of the TYPE-C in parallel. The pin 21 of U3 is connected to the pin 2 of the USB-A1. The pin 22 of U3 is connected to the pin 3 of the USB-A1. The pin 25 of U3 is connected to the pin 4 of the TYPE-C. The pin 26 of U3 is connected to the pin 10 of the TYPE-C. The 31st pin of U3 is connected to the 2nd pin and the 11th pin of TYPE-C in parallel through resistor R19, and is also connected to the source of MOS tube Q3; the 32nd pin of U3 is connected to the gate of MOS tube.

6. The USB fast charging wall socket with 45W A+C of claim 5, wherein: The optical coupling U2A is connected to the 6th pin of protocol chip U3, and the optical coupling U2 drives the feedback of power supply control end.

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