Charging power supply based on PFC and AHB

Abstract

The invention discloses a charging power supply based on PFC and AHB, which comprises a power supply interface AC, a PFC boost circuit, an AHB control circuit, a Type-C interface P100 and a Type-C interface P102, a rectification filter circuit is arranged between the power supply interface AC and the PFC boost circuit, a rectification control circuit is arranged between the AHB control circuit and the Type-C interface P100, and the Type-C interface P102 is connected with the rectification filter circuit. The power input end of the PFC booster circuit, the power input end of the AHB control circuit, the power input end of the Type-C interface P100, the power input end of the Type-C interface P102, the power input end of the rectification filter circuit and the power input end of the rectification control circuit are electrically connected with the power output end of the power interface AC. The control end of the PFC booster circuit, the control end of the Type-C interface P100, the control end of the Type-C interface P102, the control end of the rectification filter circuit and the control end of the rectification control circuit are electrically connected with the signal transmission end of the AHB control circuit. The problem that a traditional charging power supply cannot charge two mobile phones at the same time is solved. The mobile phone charger has the advantage that two mobile phones or devices can be charged at the same time.

Description

Technical Field

[0001] The present invention relates to the field of charging devices, and more specifically, to a charging power supply based on PFC and AHB. Background Art

[0002] With the increasing development of electronic products, it has promoted the development of charging devices towards miniaturization, flattening, and multi-functionality. Traditional charging devices are large in size, low in charging efficiency, serious in heat generation, and single in function, and cannot meet the needs of various customers at present.

[0003] Currently, a miniaturized charging power supply transformer is disclosed on the Chinese Patent Network, with the publication number CN217239235U, including: a magnetic core and a skeleton, and the magnetic core is symmetrically connected to the upper and lower ends of the skeleton. Among them, the magnetic core includes: a groove, a middle column, and a soft epoxy glue. Compared with the traditional technology, the structure of the magnetic core has been improved, ensuring the cross-sectional area required for the product, and at the same time, the height of the product can be greatly reduced to achieve the miniaturization of the product; the design of the skeleton has been improved, with simple process and low cost, while ensuring that the safety distance between the primary and secondary sides > 8.0 mm and the height of the product can meet the requirement of < 18 mm.

[0004] Although the miniaturized charging power supply transformer in the above patent has the advantage of small size, it uses a single power supply interface and cannot meet the charging of two or more mobile phones or devices. In addition, due to insufficient power of the charging power supply, it cannot meet the charging requirements of high-power devices such as tablets or laptops. Summary of the Invention

[0005] In order to overcome the problem in the prior art that the traditional miniaturized charging power supply cannot meet the charging of two or more mobile phones or devices, the present invention now provides a charging power supply based on PFC and AHB that has the function of charging 2 devices simultaneously.

[0006] A charging power supply based on PFC and AHB of the present invention includes a power interface AC, a PFC boost circuit, an AHB control circuit, a Type-C interface P100, and a Type-C interface P102. A rectifying and filtering circuit is provided between the power interface AC and the PFC boost circuit. A rectifying control circuit is provided between the AHB control circuit and the Type-C interface P100. The power input terminals of the PFC boost circuit, the AHB control circuit, the Type-C interface P100, the Type-C interface P102, the rectifying and filtering circuit, and the rectifying control circuit are respectively electrically connected to the power output terminal of the power interface AC. The control terminals of the PFC boost circuit, the Type-C interface P100, the Type-C interface P102, the rectifying and filtering circuit, and the rectifying control circuit are respectively electrically connected to the signal transmission terminals of the AHB control circuit.

[0007] Preferably, the rectifying and filtering circuit includes a differential and common-mode filtering circuit, a full-bridge rectifying circuit, and a type-II filtering circuit. The output terminal of the power interface AC is electrically connected to the input terminal of the differential and common-mode filtering circuit. The output terminal of the differential and common-mode filtering circuit is electrically connected to the input terminal of the full-bridge rectifying circuit. The output terminal of the full-bridge rectifying circuit is electrically connected to the input terminal of the type-II filtering circuit. The output terminal of the type-II filtering circuit is electrically connected to the input terminal of the PFC boost circuit.

[0008] Preferably, the differential and common-mode filtering circuit includes a fuse F1, a transformer LF1, a transformer LF2, a capacitor CX1, a capacitor CY1, a capacitor CY2, a capacitor CY3, a diode D4, a diode D5, and a resistor R24. One end of the fuse F1 is electrically connected to the 1-pin of the power interface AC. The other end of the fuse F1 is electrically connected to the 1-pin of the transformer LF1. The 2-pin of the transformer LF1 is electrically connected to the 2-pin of the power interface AC. One end of the capacitor CX1 is respectively electrically connected to the 4-pin of the transformer LF1 and the 1-pin of the transformer LF2. The other end of the capacitor CX1 is respectively electrically connected to the 3-pin of the transformer LF1 and the 2-pin of the transformer LF2. The 3-pin of the transformer LF2 is respectively electrically connected to the positive electrode of the diode D5 and the full-bridge rectifying circuit. The negative electrode of the diode D5 is respectively electrically connected to one end of the resistor R24 and the negative electrode of the diode D4. The other end of the resistor R24 is electrically connected to the AHB control circuit. The positive electrode of the diode D4 is electrically connected to the full-bridge rectifying circuit. The other end of the capacitor CX1 is electrically connected to one end of the CY3. The other end of the CY3 is respectively electrically connected to one end of the CY2 and one end of the CY1. The other end of the CY3 is connected to the signal ground. The other end of the CY2 is grounded.

[0009] Preferably, the full-bridge rectifier circuit includes a rectifier bridge BD1 and a rectifier bridge BD2. The 1-pin of the rectifier bridge BD1 is electrically connected to the positive electrode of the diode D4, the 4-pin of the transformer LF2, and the 3-pin of the rectifier bridge BD1 respectively. The 1-pin of the rectifier bridge BD2 is electrically connected to the positive electrode of the diode D5, the 3-pin of the transformer LF2, and the 3-pin of the rectifier bridge BD2 respectively. The 2-pin of the rectifier bridge BD1, the 4-pin of the rectifier bridge BD1, the 2-pin of the rectifier bridge BD2, and the 4-pin of the rectifier bridge BD2 are electrically connected to the type-II filter circuit respectively.

[0010] Preferably, the type-II filter circuit includes a capacitor CB1, a capacitor CB2, a capacitor CB4, and an inductor L1. One end of the inductor L1 is electrically connected to the 4-pin of the rectifier bridge BD1, the 4-pin of the rectifier bridge BD2, and one end of the capacitor CB2 respectively. The other end of the inductor L1 is electrically connected to one end of the capacitor CB1 and one end of the capacitor CB4 respectively. The other end of the capacitor CB1, the other end of the capacitor CB2, the other end of the capacitor CB4, the 2-pin of the rectifier bridge BD1, and the 2-pin of the rectifier bridge BD2 are electrically connected. The other end of the capacitor CB1 is grounded.

[0011] Preferably, the PFC boost circuit includes chip U4, MOS transistor Q1, inductor T1, inductor L1, inductor BEAD1, diode D1, diode U1, diode D3, capacitor C5, capacitor C6, capacitor C7, capacitor C8, capacitor C10, capacitor C11, capacitor C12, capacitor C13, resistor R1, resistor R2, resistor R5, resistor R6, resistor R8, resistor R9, resistor R12, resistor R13, resistor R15, resistor R16, resistor R18, resistor R19, resistor R20, resistor R21 and resistor R22. One end of the inductor T1 is electrically connected to the positive electrode of the diode D1 and one end of the capacitor CB4 respectively. The negative electrode of the diode D1 is electrically connected to the negative electrode of the diode U1 and one end of the resistor R1 respectively. The positive electrode of the diode U1 is electrically connected to the other end of the inductor T1, one end of the capacitor C5, one end of the resistor R2 and one end of the inductor L2 respectively. The other end of the inductor L2 is electrically connected to the 2-pin of the MOS transistor Q1. The other end of the resistor R2 is electrically connected to one end of the resistor R5. The other end of the capacitor C5 is electrically connected to the other end of the resistor R5, one end of the resistor R15, one end of the capacitor C8 and one end of the resistor R18 respectively. The other end of the resistor R15 is electrically connected to the other end of the capacitor C8, one end of the resistor R19, one end of the resistor R20, one end of the resistor R21, one end of the resistor R12 and the 3-pin of the MOS transistor Q1 respectively. The 1-pin of the MOS transistor Q1 is electrically connected to one end of the inductor BEAD1. The other end of the inductor BEAD1 is electrically connected to one end of the resistor R8, the other end of the resistor R12 and one end of the resistor R13 respectively. The other end of the resistor R8 is electrically connected to the positive electrode of the diode D3. The negative electrode of the diode D3 is electrically connected to the 5-pin of the chip U4 and the other end of the resistor R13 respectively. The 2-pin of the chip U4 is electrically connected to the other end of the resistor R18 and one end of the capacitor C13 respectively. The other end of the capacitor C13 is electrically connected to the other end of the resistor R19, the other end of the resistor R20, the other end of the resistor R21 and one end of the resistor R22 respectively. The other end of the resistor R21 is grounded. The other end of the resistor R22 is electrically connected to one end of the resistor R9, one end of the capacitor C12 and the 1-pin of the chip U4 respectively. The other end of the resistor R9 is electrically connected to one end of the resistor R6. The other end of the resistor R6 is electrically connected to the other end of the resistor R1. The other end of the capacitor C12 is electrically connected to one end of the capacitor C11, one end of the capacitor C10, one end of the capacitor C7, one end of the capacitor C6 and the 4-pin of the chip U4 respectively. The 4-pin of the chip U4 is grounded. The other end of the capacitor C11 is electrically connected to one end of the resistor R16. The other end of the resistor R16 is electrically connected to the other end of the capacitor C10 and the 6-pin of the chip U4 respectively.The other end of the capacitor C7 is electrically connected to the other end of the capacitor C6 and the 3-pin of the chip U4 respectively.

[0012] Preferably, the AHB control circuit includes chip U6, polarized capacitor EC5, polarized capacitor EC6, capacitor CB3, capacitor C14, capacitor C15, capacitor C16, transformer T2B, resistor RS1, resistor RS2, resistor RS3, resistor R7, resistor R25, resistor R27, resistor R26, resistor R28, resistor R29, resistor R30, resistor R31, diode D6, diode D7, diode D8, zener diode D9, and MOS transistor Q3. One end of the 1-pin of chip U6 is electrically connected to one end of resistor RS1, one end of resistor RS2, and one end of resistor RS3 respectively. One end of resistor RS1 is connected to the protection ground. The 2-pin of chip U6 is electrically connected to the other end of resistor RS3, the other end of resistor RS2, and the other end of resistor RS1 respectively. The negative electrode of polarized capacitor EC1 is grounded. The 3-pin of chip U6 is electrically connected to one end of resistor R30 and one end of resistor R31 respectively. The 4-pin of chip U6 is electrically connected to one end of capacitor C16. The other end of capacitor C16 is electrically connected to one end of capacitor C15, the 6-pin of chip U6, and the 12-pin of chip U6 respectively. The 12-pin of chip U6 is connected to the protection ground. The 5-pin of chip U6 is electrically connected to the other end of capacitor C15. The other end of capacitor C15 is electrically connected to one end of resistor R26, the positive electrode of polarized capacitor EC6, the negative electrode of diode D7, the 1-pin of MOS transistor Q3, and one end of resistor R25 respectively. The other end of resistor R26 is electrically connected to the 3-pin of chip U4. The other end of resistor R25 is electrically connected to the positive electrode of diode D6. The other end of resistor R24 is electrically connected to the 7-pin of chip U6. The negative electrode of diode D6 is electrically connected to the 8-pin of chip U6 and one end of capacitor C14 respectively. The other end of capacitor C14 is electrically connected to the 9-pin of chip U6, the 11-pin of chip U6, one end of resistor R7, and one end of capacitor CB3 respectively. The other end of resistor R7 is connected to the other end of capacitor CB3. The 2-pin of MOS transistor Q3 is electrically connected to one end of resistor R29, the positive electrode of polarized capacitor EC5, and the negative electrode of diode D8 respectively. The 3-pin of MOS transistor Q3 is electrically connected to the negative electrode of zener diode D9 and the other end of resistor R29 respectively. The positive electrode of zener diode D9 is electrically connected to the negative electrode of polarized capacitor EC6, the negative electrode of polarized capacitor EC5, the other end of resistor R31, and the 8-pin of transformer T2B respectively. The other end of resistor R31 is connected to the protection ground. The positive electrode of diode D8 is electrically connected to one end of resistor R28. The other end of resistor R28 is electrically connected to the other end of resistor R30 and the 2-pin of transformer T2B respectively. The 1-pin of transformer T2B is electrically connected to one end of resistor R27. The other end of resistor R27 is electrically connected to the positive electrode of diode D7.

[0013] Preferably, the rectification control circuit includes an isolation transformer circuit, an optocoupler feedback circuit, a synchronous rectification circuit, and an AHB control circuit. The isolation transformer circuit includes a transformer T2A, polarized capacitors EC1, EC2, EC3, EC4, a capacitor C1, a capacitor C3, inductors L3, L4. One end of the capacitor C3 is electrically connected to one end of a resistor R1, the positive electrodes of the polarized capacitors EC1, EC2, EC3, EC4, the positive electrode of the capacitor C1, one end of the inductor L4, one end of the inductor L3, and the 4-pin of the transformer T2A. The 4-pin of the transformer T2A outputs Vout. The other end of the capacitor CY1 is connected to Vout. The other end of the capacitor C3 is grounded. The negative electrodes of the polarized capacitors EC1, EC2, EC3, EC4, the other end of the capacitor C1, and the other end of the resistor RS1 are electrically connected. The negative electrode of the polarized capacitor EC1 is grounded. The other end of the inductor L4 is electrically connected to the other end of the inductor L3 and the 10-pin of the chip U6. The 6-pin of the transformer T2A is connected to the other end of the capacitor CB3. The synchronous rectification circuit includes a zener diode D2, a diode DK, a capacitor C4, polarized capacitors C7, C8, C11, and C12. The 10-pin of the transformer T2A is electrically connected to the positive electrodes of the polarized capacitors EC7, EC8, EC11, and EC12 respectively. The 11-pin of the transformer T2A is electrically connected to the negative electrode of the diode DK, one end of a resistor R4, one end of a resistor R3, and the negative electrode of the zener diode D2 respectively. The positive electrode of the zener diode D2 is electrically connected to one end of the capacitor C4, the positive electrode of the diode DK, the negative electrodes of the polarized capacitors EC7, EC8, EC11, and EC12 respectively. The other end of the resistor R4 is electrically connected to the other end of the resistor R3 and the other end of the capacitor C4 respectively. The negative electrode of the polarized capacitor C12 is connected to the signal ground. The positive electrode of the polarized capacitor C11 outputs VIN;The described optocoupler feedback circuit includes optocoupler U5, precision voltage regulator Q2, resistor R10, resistor R11, resistor R14, resistor R17, and resistor R23. One end of the 1-pin of the optocoupler U5 is electrically connected to one end of the resistor R10 and one end of the resistor R11. The other end of the resistor R10 is electrically connected to one end of the resistor R14 and the positive electrode of the polarized capacitor EC12. One end of the 2-pin of the optocoupler U5 is electrically connected to the other end of the resistor R11, one end of the capacitor C9, and the 1-pin of the precision voltage regulator Q2. The other end of the capacitor C9 is electrically connected to one end of the resistor R17. The other end of the resistor R17 is electrically connected to the other end of the resistor R14, the 3-pin of the precision voltage regulator Q2, and one end of the resistor R13. The 2-pin of the precision voltage regulator Q2 is electrically connected to the other end of the resistor R13, and the 2-pin of the precision voltage regulator Q2 is connected to the signal ground.;

[0014] Preferably, the AHB control circuit includes a protocol control circuit, a first step-down circuit, and a second step-down circuit. The protocol control circuit includes chip IC100, diode D100, diode D101, programming port P101, resistor R101, resistor R108, resistor R109, resistor R110, resistor R111, resistor R118, resistor R119, resistor R120, resistor R121, capacitor C111, capacitor C117, capacitor C122, capacitor C123, and capacitor C125. The 1-pin of the chip IC100 is electrically connected to one end of the resistor R111 and one end of the capacitor C117. The other end of the resistor R111 is electrically connected to the 1-pin of the programming port P101, the negative electrode of the diode D100, the negative electrode of the diode D101, one end of the capacitor C125, and the 6-pin of the chip IC100. The other end of the capacitor C117 is electrically connected to the 4-pin of the chip IC100. The other end of the capacitor C117 is connected to the signal ground. The 5-pin of the chip IC100 is electrically connected to one end of the capacitor C122 and one end of the capacitor C123. The other end of the capacitor C122 is electrically connected to the other end of the capacitor C123. The other end of the capacitor C122 is connected to the signal ground. The other end of the capacitor C125 is connected to the signal ground. The 7-pin of the chip IC100 is electrically connected to one end of the resistor R118. The 8-pin of the chip IC100 is electrically connected to one end of the resistor R119. The 9-pin of the chip IC100 is electrically connected to one end of the resistor R120. The 10-pin of the chip IC100 is electrically connected to one end of the resistor R121. The other end of the resistor R118 is electrically connected to the other end of the resistor R119, the other end of the resistor R120, and the other end of the resistor R121. The other end of the resistor R118 is electrically connected to the 1-pin of the programming port P101. The 14-pin of the chip IC100 is electrically connected to the 2-pin of the programming port P101. The 15-pin of the chip IC100 is electrically connected to the 3-pin of the programming port P101. The 4-pin of the programming port P101 is connected to the signal ground. The 16-pin of the chip IC100 is electrically connected to one end of the capacitor C111 and one end of the resistor R109. The other end of the resistor R109 is electrically connected to one end of the resistor R108 and one end of the resistor R110. The other end of the resistor R108 is connected to VIN.The other end of the resistor R110 is connected to the signal ground; the first step-down circuit includes a chip U100, an electrostatic protection ESD100, MOS transistors Q100, Q101, a Type-C interface P100, resistors R100, R101, R102, R103, R104, R105, R106, R107, capacitors C100, C101, C102, C103, C104, C105, C106, C107, C108, C109, C112, C113, C114 and a polarized capacitor EC9. The 1-pin of the chip U100 is electrically connected to one end of the resistor R100. The other end of the resistor R100 is respectively electrically connected to one end of the capacitor C103 and the B5 pin of the Type-C interface P100. The other end of the capacitor C103 is connected to the signal ground. The 2-pin of the chip U100 is electrically connected to one end of the resistor R104. The other end of the resistor R104 is respectively electrically connected to one end of the capacitor C105 and the A5 pin of the Type-C interface P100. The other end of the capacitor C105 is connected to the signal ground. The 3-pin of the chip U100 is electrically connected to one end of the resistor R105. The other end of the resistor R105 is respectively electrically connected to the A6 pin and the B6 pin of the Type-C interface P100. The 4-pin of the chip U100 is electrically connected to one end of the resistor R101. The other end of the resistor R101 is respectively electrically connected to the A7 pin and the B7 pin of the Type-C interface P100. The 12-pin of the chip U100 is electrically connected to one end of the capacitor C114. The other end of the capacitor C114 is respectively electrically connected to the 13-pin of the chip U100 and one end of the capacitor C113. The other end of the capacitor C113 is respectively electrically connected to the 14-pin of the chip U100 and the positive electrode of the diode D100. The 13-pin of the chip U100 is connected to the signal ground. The 15-pin of the chip U100 is electrically connected to one end of the capacitor C112. The other end of the capacitor C112 is respectively electrically connected to the 18-pin of the chip U100, the 1-pin of the MOS transistor Q100, the 2-pin of the MOS transistor Q100, the 3-pin of the MOS transistor Q100, the 5-pin of the MOS transistor Q101, the 6-pin of the MOS transistor Q101, the 7-pin of the MOS transistor Q101, the 8-pin of the MOS transistor Q101, one end of the resistor R107 and one end of the inductor L100. The 16-pin of the chip U100 is electrically connected to the 4-pin of the MOS transistor Q101. The 1-pin of the MOS transistor Q101 is respectively electrically connected to the 2-pin and the 3-pin of the MOS transistor Q101. The 1-pin of the MOS transistor Q101 is connected to the signal ground.The 17th pin of the chip U100 is electrically connected to the 4th pin of the MOS transistor Q100. The 5th pin of the MOS transistor Q100 is respectively electrically connected to the 6th pin of the MOS transistor Q100, the 7th pin of the MOS transistor Q100, the 8th pin of the MOS transistor Q100, the 19th pin of the chip U100, one end of the capacitor C102, and one end of the capacitor C101. The other end of the capacitor C102 is electrically connected to the other end of the capacitor C101. The other end of the capacitor C101 is connected to the signal ground. One end of the capacitor C101 is connected to VIN. The other end of the resistor R107 is electrically connected to one end of the capacitor C108. The other end of the capacitor C108 is connected to the signal ground. The other end of the inductor L100 is respectively electrically connected to one end of the capacitor C109, the positive electrode of the polarized capacitor EC9, one end of the resistor R106, and one end of the capacitor C106. The other end of the capacitor C109 is electrically connected to the negative electrode of the polarized capacitor EC9. The negative electrode of the polarized capacitor EC9 is connected to the signal ground. The 6th pin of the chip U100 is respectively electrically connected to the 8th pin of the chip U100, the 9th pin of the chip U100, and one end of the capacitor C106. The 7th pin of the chip U100 is respectively electrically connected to the other end of the capacitor C106, the other end of the resistor R106, the 10th pin of the chip U100, one end of the capacitor C107, the A4 pin of the Type-C interface P100, the B4 pin of the Type-C interface P100, the A9 pin of the Type-C interface P100, and the B9 pin of the Type-C interface P100. The other end of the capacitor C107 is connected to the signal ground. The other end of the capacitor C107 is respectively connected to the A1 pin of the Type-C interface P100, the B1 pin of the Type-C interface P100, the A12 pin of the Type-C interface P100, and the B12 pin of the Type-C interface P100. The 20th pin of the chip U100 is electrically connected to the 8th pin of the chip IC100. The 21st pin of the chip U100 is electrically connected to the 7th pin of the chip IC100. The 24th pin of the chip U100 is electrically connected to one end of the resistor R103. The other end of the resistor R103 is connected to the signal ground. The 25th pin of the chip U100 is respectively electrically connected to one end of the resistor R102 and one end of the capacitor C100. The other end of the resistor R102 is electrically connected to one end of the capacitor C104. The other end of the capacitor C104 is electrically connected to the other end of the capacitor C100. The other end of the capacitor C104 is connected to the signal ground. The 26th pin of the chip U100 is electrically connected to the 29th pin of the chip U100. The 26th pin of the chip U100 is connected to the signal ground. The 1st pin of the electrostatic protection ESD100 is electrically connected to the other end of the resistor R101. The 2nd pin of the electrostatic protection ESD100 is electrically connected to the other end of the resistor R105.The 4-pin of the described electrostatic protection ESD100 is electrically connected to the other end of the resistor R104. The 5-pin of the electrostatic protection ESD100 is electrically connected to the other end of the resistor R100. The 3-pin of the electrostatic protection ESD100 is electrically connected to the 8-pin of the electrostatic protection ESD100, and the 3-pin of the electrostatic protection ESD100 is connected to the signal ground. The second step-down circuit includes the chip U101, the electrostatic protection ESD101, the MOS transistor Q102, the MOS transistor Q103, the Type-C interface P102, the resistors R112, R113, R114, R115, R116, R117, R124, R125, the capacitors C115, C116, C118, C119, C120, C121, C124, C126, C127, C128, C132, C134, and the polarized capacitor EC10. The 1-pin of the chip U101 is electrically connected to one end of the resistor R112. The other end of the resistor R112 is respectively electrically connected to one end of the capacitor C116, the B5 pin of the Type-C interface P102, and the 5-pin of the electrostatic protection ESD101. The other end of the capacitor C116 is connected to the signal ground. The 2-pin of the chip U101 is electrically connected to one end of the resistor R113. The other end of the resistor R113 is respectively electrically connected to one end of the capacitor C120, the A5 pin of the Type-C interface P102, and the 4-pin of the electrostatic protection ESD101. The other end of the capacitor C120 is connected to the signal ground. The 3-pin of the chip U101 is electrically connected to one end of the resistor R117. The other end of the resistor R117 is respectively electrically connected to the 2-pin of the electrostatic protection ESD101, the A6 pin of the Type-C interface P102, and the B6 pin of the Type-C interface P102. The 4-pin of the chip U101 is electrically connected to one end of the resistor R116. The other end of the resistor R116 is respectively electrically connected to the 2-pin of the electrostatic protection ESD101, the A7 pin of the Type-C interface P102, and the B7 pin of the Type-C interface P102. The 6-pin of the chip U101 is electrically connected to one end of the capacitor C126. The 7-pin of the chip U101 is electrically connected to the other end of the capacitor C126. The 8-pin of the chip U101 is respectively electrically connected to the 9-pin of the chip U101 and the 6-pin of the chip U101. The 10-pin of the chip U101 is electrically connected to the other end of the capacitor C126. The 12-pin of the chip U101 is electrically connected to one end of the capacitor C134. The other end of the capacitor C134 is respectively electrically connected to the 13-pin of the chip U101 and one end of the capacitor C132. The other end of the capacitor C132 is electrically connected to the 14-pin of the chip U101.Pin 13 of the chip U101 is connected to the signal ground. The other end of the capacitor C113 is electrically connected to Pin 14 of the chip U100 and the positive electrode of the diode D100 respectively. The positive electrode of the diode D101 is electrically connected to Pin 14 of the chip U101. Pin 15 of the chip U101 is electrically connected to one end of the capacitor C130. The other end of the capacitor C130 is electrically connected to Pin 18 of the chip U101, Pin 1 of the MOS transistor Q102, Pin 2 of the MOS transistor Q102, Pin 3 of the MOS transistor Q102, Pin 5 of the MOS transistor Q103, Pin 6 of the MOS transistor Q103, Pin 7 of the MOS transistor Q103, Pin 8 of the MOS transistor Q103, one end of the resistor R125 and one end of the inductor L101 respectively. Pin 16 of the chip U101 is electrically connected to Pin 4 of the MOS transistor Q103. Pin 1 of the MOS transistor Q103 is electrically connected to Pin 2 of the MOS transistor Q103 and Pin 3 of the MOS transistor Q103 respectively. Pin 1 of the MOS transistor Q103 is connected to the signal ground. Pin 17 of the chip U101 is electrically connected to Pin 4 of the MOS transistor Q102. Pin 5 of the MOS transistor Q102 is electrically connected to Pin 6 of the MOS transistor Q102, Pin 7 of the MOS transistor Q102, Pin 8 of the MOS transistor Q102, Pin 19 of the chip U101, one end of the capacitor C119 and one end of the capacitor C118 respectively. The other end of the capacitor C119 and the other end of the capacitor C118 are electrically connected. The other end of the capacitor C118 is connected to the signal ground. One end of the capacitor C118 is connected to VIN. Pin 20 of the chip U101 is electrically connected to Pin 10 of the chip IC100. Pin 21 of the chip U101 is electrically connected to Pin 9 of the chip IC100. Pin 24 of the chip U101 is electrically connected to one end of the resistor R115. The other end of the resistor R115 is connected to the signal ground. Pin 25 of the U101 is electrically connected to one end of the resistor R114 and one end of the capacitor C115 respectively. The other end of the resistor R114 is electrically connected to one end of the capacitor C121. The other end of the capacitor C121 and the other end of the capacitor C115 are electrically connected. The other end of the capacitor C121 is connected to the signal ground. Pin 26 of the chip U101 is electrically connected to Pin 29 of the chip U101. Pin 26 of the chip U101 is connected to the signal ground. The other end of the resistor R125 is electrically connected to one end of the capacitor C127. The other end of the capacitor C127 is connected to the signal ground. The other end of the inductor L101 is electrically connected to one end of the capacitor C128, the positive electrode of the polarized capacitor EC10, one end of the resistor R124 and one end of the capacitor C126 respectively. The other end of the capacitor C128 and the negative electrode of the polarized capacitor EC10 are electrically connected. The negative electrode of the polarized capacitor EC10 is connected to the signal ground.The other end of the resistor R124 is electrically connected to the other end of the capacitor C126, the 10th pin of the chip U101, one end of the capacitor C124, the A4 pin of the Type-C interface P102, the B4 pin of the Type-C interface P102, the A9 pin of the Type-C interface P102, and the B9 pin of the Type-C interface P102. The other end of the capacitor C124 is connected to the signal ground. The other end of the capacitor C124 is electrically connected to the A1 pin of the Type-C interface P102, the B1 pin of the Type-C interface P102, the A12 pin of the Type-C interface P102, and the B12 pin of the Type-C interface P102.

[0015] The chip U4 has a model number of KP2806A; the chip IC100 has a model number of HC32L110C6UA; the MOS transistor Q1 has a model number of INN650D080BS; the MOS transistors Q100, Q101, Q102, and Q103 all have a model number of NCEP4065QU; the chip U6 has a model number of DK8718AD; the controllable precision voltage regulator Q2 has a model number of TL431; the MOS transistor Q3 has a model number of BSS123; the optocoupler U5 has a model number of EL1019; the chips U100 and U101 both have a model number of SW3516H; the electrostatic protections ESD100 and ESD101 both have a model number of ESD2404P5B; the Type-C interfaces P100 and P102 both have a model number of TYPE-C-24.

[0016] Working control principle: Connect the power interface AC to the three-phase power supply. After connecting the power supply, the three-phase power supply undergoes differential common-mode filtering, full-bridge rectification, and Π-type filtering, and is boosted to about 300V by the PFC boost circuit, and then input to the AHB control circuit. The electromagnetic energy conversion of the isolation transformer is controlled by the power device switch built into the chip U6 to provide a safe and stable voltage to the secondary side of the transformer T2. Through the chip U2 synchronous rectification control circuit and the optocoupler feedback circuit, the DC output is made more stable and the overall system is more efficient.

[0017] The present invention adopts 2-way Type-C port output, which not only meets the conventional PDO: 5V0-3A, 9V0-3A, 12V0-3A, 15V0-3A, 20V0-5A, but also has PPS 3.3-21V0-3A, greatly increasing the power supply adaptability and enabling power supply to charging devices with different requirements.

[0018] The present invention applies the latest semiconductor GaN technology and the asymmetric half-bridge AHB topology, making the volume of the fast-charging power supply more than 50% smaller than that of the power supply developed by traditional MOS technology, and the efficiency is increased by about 3%. A pre-stage PFC power factor correction circuit is adopted to improve the utilization efficiency of the input power and meet the certification requirements. The Power Delivery (PD) protocol is adopted, and by using this protocol, communication protocols such as PPS, PD, QC, AFC, FCP, SCP, and PE are satisfied, meeting the charging requirements of most mobile phones or devices. At the same time, the power supply provides two Type-C output ports, supports blind plugging of power, and also meets the need to charge two mobile phones or devices simultaneously.

[0019] The present invention has the following beneficial effects: It can charge two mobile phones or devices simultaneously, with high charging efficiency and good adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Attached Figure 1 is the schematic diagram of the power interface AC and PFC boost circuit of the present invention.

[0021] Attached Figure 2 is the schematic diagram of the protocol control circuit of the present invention.

[0022] Attached Figure 3 is the schematic diagram of the first buck circuit of the present invention.

[0023] Attached Figure 4 is the schematic diagram of the second buck circuit of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0024] The technical solution of the present invention will be further specifically described below through embodiments in combination with the drawings.

[0025] Embodiment: According to Attached Figure 1 and Attached Figure 2 、Attached Figure 3 and Attached Figure 4To further illustrate the present invention, a charging power supply based on PFC and AHB includes a power interface AC, a PFC boost circuit, an AHB control circuit, a Type-C interface P100, and a Type-C interface P102. A rectifying and filtering circuit is provided between the power interface AC and the PFC boost circuit, and a rectifying AHB control circuit is provided between the AHB control circuit and the Type-C interface P100. The power input terminals of the PFC boost circuit, the AHB control circuit, the Type-C interface P100, the Type-C interface P102, the rectifying and filtering circuit, and the rectifying AHB control circuit are respectively electrically connected to the power output terminal of the power interface AC. The control terminals of the PFC boost circuit, the Type-C interface P100, the Type-C interface P102, the rectifying and filtering circuit, and the rectifying AHB control circuit are respectively electrically connected to the signal transmission terminal of the AHB control circuit.

[0026] The rectifying and filtering circuit includes a differential and common-mode filtering circuit, a full-bridge rectifying circuit, and a type-II filtering circuit. The output terminal of the power interface AC is electrically connected to the input terminal of the differential and common-mode filtering circuit. The output terminal of the differential and common-mode filtering circuit is electrically connected to the input terminal of the full-bridge rectifying circuit. The output terminal of the full-bridge rectifying circuit is electrically connected to the input terminal of the type-II filtering circuit. The output terminal of the type-II filtering circuit is electrically connected to the input terminal of the PFC boost circuit.

[0027] The differential and common-mode filtering circuit includes a fuse F1, a transformer LF1, a transformer LF2, a capacitor CX1, capacitors CY1, CY2, CY3, diodes D4, D5, and a resistor R24. One end of the fuse F1 is electrically connected to the 1-pin of the power interface AC. The other end of the fuse F1 is electrically connected to the 1-pin of the transformer LF1. The 2-pin of the transformer LF1 is electrically connected to the 2-pin of the power interface AC. One end of the capacitor CX1 is respectively electrically connected to the 4-pin of the transformer LF1 and the 1-pin of the transformer LF2. The other end of the capacitor CX1 is respectively electrically connected to the 3-pin of the transformer LF1 and the 2-pin of the transformer LF2. The 3-pin of the transformer LF2 is respectively electrically connected to the positive electrode of the diode D5 and the full-bridge rectifying circuit. The negative electrode of the diode D5 is respectively electrically connected to one end of the resistor R24 and the negative electrode of the diode D4. The other end of the resistor R24 is electrically connected to the AHB control circuit. The positive electrode of the diode D4 is electrically connected to the full-bridge rectifying circuit. The other end of the capacitor CX1 is electrically connected to one end of the CY3. The other end of the CY3 is respectively electrically connected to one end of the CY2 and one end of the CY1. The other end of the CY3 is connected to the signal ground. The other end of the CY2 is grounded.

[0028] The full-bridge rectifier circuit includes rectifier bridges BD1 and BD2. The 1-pin of rectifier bridge BD1 is electrically connected to the positive electrode of diode D4, the 4-pin of transformer LF2, and the 3-pin of rectifier bridge BD1 respectively. The 1-pin of rectifier bridge BD2 is electrically connected to the positive electrode of diode D5, the 3-pin of transformer LF2, and the 3-pin of rectifier bridge BD2 respectively. The 2-pin of rectifier bridge BD1, the 4-pin of rectifier bridge BD1, the 2-pin of rectifier bridge BD2, and the 4-pin of rectifier bridge BD2 are electrically connected to the type-II filter circuit respectively.

[0029] The type-II filter circuit includes capacitors CB1, CB2, CB4, and inductor L1. One end of inductor L1 is electrically connected to the 4-pin of rectifier bridge BD1, the 4-pin of rectifier bridge BD2, and one end of capacitor CB2 respectively. The other end of inductor L1 is electrically connected to one end of capacitor CB1 and one end of capacitor CB4 respectively. The other ends of capacitor CB1, capacitor CB2, capacitor CB4, the 2-pin of rectifier bridge BD1, and the 2-pin of rectifier bridge BD2 are electrically connected, and the other end of capacitor CB1 is grounded.

[0030] The described PFC boost circuit includes chip U4, MOS transistor Q1, inductor T1, inductor L1, inductor BEAD1, diode D1, diode U1, diode D3, capacitor C5, capacitor C6, capacitor C7, capacitor C8, capacitor C10, capacitor C11, capacitor C12, capacitor C13, resistor R1, resistor R2, resistor R5, resistor R6, resistor R8, resistor R9, resistor R12, resistor R13, resistor R15, resistor R16, resistor R18, resistor R19, resistor R20, resistor R21 and resistor R22. One end of the inductor T1 is electrically connected to the positive electrode of the diode D1 and one end of the capacitor CB4 respectively. The negative electrode of the diode D1 is electrically connected to the negative electrode of the diode U1 and one end of the resistor R1 respectively. The positive electrode of the diode U1 is electrically connected to the other end of the inductor T1, one end of the capacitor C5, one end of the resistor R2 and one end of the inductor L2 respectively. The other end of the inductor L2 is electrically connected to the 2-pin of the MOS transistor Q1. The other end of the resistor R2 is electrically connected to one end of the resistor R5. The other end of the capacitor C5 is electrically connected to the other end of the resistor R5, one end of the resistor R15, one end of the capacitor C8 and one end of the resistor R18 respectively. The other end of the resistor R15 is electrically connected to the other end of the capacitor C8, one end of the resistor R19, one end of the resistor R20, one end of the resistor R21, one end of the resistor R12 and the 3-pin of the MOS transistor Q1 respectively. The 1-pin of the MOS transistor Q1 is electrically connected to one end of the inductor BEAD1. The other end of the inductor BEAD1 is electrically connected to one end of the resistor R8, the other end of the resistor R12 and one end of the resistor R13 respectively. The other end of the resistor R8 is electrically connected to the positive electrode of the diode D3. The negative electrode of the diode D3 is electrically connected to the 5-pin of the chip U4 and the other end of the resistor R13 respectively. The 2-pin of the chip U4 is electrically connected to the other end of the resistor R18 and one end of the capacitor C13 respectively. The other end of the capacitor C13 is electrically connected to the other end of the resistor R19, the other end of the resistor R20, the other end of the resistor R21 and one end of the resistor R22 respectively. The other end of the resistor R21 is grounded. The other end of the resistor R22 is electrically connected to one end of the resistor R9, one end of the capacitor C12 and the 1-pin of the chip U4 respectively. The other end of the resistor R9 is electrically connected to one end of the resistor R6. The other end of the resistor R6 is electrically connected to the other end of the resistor R1. The other end of the capacitor C12 is electrically connected to one end of the capacitor C11, one end of the capacitor C10, one end of the capacitor C7, one end of the capacitor C6 and the 4-pin of the chip U4 respectively. The 4-pin of the chip U4 is grounded. The other end of the capacitor C11 is electrically connected to one end of the resistor R16. The other end of the resistor R16 is electrically connected to the other end of the capacitor C10 and the 6-pin of the chip U4 respectively.The other end of the capacitor C7 is electrically connected to the other end of the capacitor C6 and the 3-pin of the chip U4 respectively.

[0031] The described AHB control circuit includes chip U6, polarized capacitor EC5, polarized capacitor EC6, capacitor CB3, capacitor C14, capacitor C15, capacitor C16, transformer T2, resistor RS1, resistor RS2, resistor RS3, resistor R7, resistor R25, resistor R27, resistor R26, resistor R28, resistor R29, resistor R30, resistor R31, diode D6, diode D7, diode D8, zener diode D9, and MOS transistor Q3. One end of the 1-pin of the chip U6 is electrically connected to one end of the resistor RS1, one end of the resistor RS2, and one end of the resistor RS3. One end of the resistor RS1 is connected to the protective ground. The 2-pin of the chip U6 is electrically connected to the other end of the resistor RS3, the other end of the resistor RS2, and the other end of the resistor RS1. The negative electrode of the polarized capacitor EC1 is grounded. The 3-pin of the chip U6 is electrically connected to one end of the resistor R30 and one end of the resistor R31. The 4-pin of the chip U6 is electrically connected to one end of the capacitor C16. The other end of the capacitor C16 is electrically connected to one end of the capacitor C15, the 6-pin of the chip U6, and the 12-pin of the chip U6. The 12-pin of the chip U6 is connected to the protective ground. The 5-pin of the chip U6 is electrically connected to the other end of the capacitor C15. The other end of the capacitor C15 is electrically connected to one end of the resistor R26, the positive electrode of the polarized capacitor EC6, the negative electrode of the diode D7, the 1-pin of the MOS transistor Q3, and one end of the resistor R25. The other end of the resistor R26 is electrically connected to the 3-pin of the chip U4. The other end of the resistor R25 is electrically connected to the positive electrode of the diode D6. The other end of the resistor R24 is electrically connected to the 7-pin of the chip U6. The negative electrode of the diode D6 is electrically connected to the 8-pin of the chip U6 and one end of the capacitor C14. The other end of the capacitor C14 is electrically connected to the 9-pin of the chip U6, the 11-pin of the chip U6, one end of the resistor R7, and one end of the capacitor CB3. The other end of the resistor R7 is electrically connected to the other end of the capacitor CB3. The 2-pin of the MOS transistor Q3 is electrically connected to one end of the resistor R29, the positive electrode of the polarized capacitor EC5, and the negative electrode of the diode D8. The 3-pin of the MOS transistor Q3 is electrically connected to the negative electrode of the zener diode D9 and the other end of the resistor R29. The positive electrode of the zener diode D9 is electrically connected to the negative electrode of the polarized capacitor EC6, the negative electrode of the polarized capacitor EC5, the other end of the resistor R31, and the 8-pin of the transformer T2. The other end of the resistor R31 is connected to the protective ground. The positive electrode of the diode D8 is electrically connected to one end of the resistor R28. The other end of the resistor R28 is electrically connected to the other end of the resistor R30 and the 2-pin of the transformer T2. The 1-pin of the transformer T2 is electrically connected to one end of the resistor R27. The other end of the resistor R27 is electrically connected to the positive electrode of the diode D7.

[0032] The rectification control circuit includes an isolation transformer circuit, an optocoupler feedback circuit, a synchronous rectification circuit, and an AHB control circuit. The isolation transformer circuit includes polar capacitors EC1, EC2, EC3, EC4, capacitor C1, capacitor C3, inductors L3, L4. One end of capacitor C3 is electrically connected to one end of resistor R1, the positive electrodes of polar capacitors EC1, EC2, EC3, EC4, the positive electrode of capacitor C1, one end of inductor L4, one end of inductor L3, and pin 4 of transformer T2. Pin 4 of transformer T2 outputs Vout. The other end of capacitor CY1 is connected to Vout. The other end of capacitor C3 is grounded. The negative electrodes of polar capacitors EC1, EC2, EC3, EC4, the other end of capacitor C1, and the other end of resistor RS1 are electrically connected. The negative electrode of polar capacitor EC1 is grounded. The other end of inductor L4 is electrically connected to the other end of inductor L3 and pin 10 of chip U6. Pin 6 of transformer T2 is connected to the other end of capacitor CB3. The synchronous rectification circuit includes zener diode D2, diode DK, capacitor C4, polar capacitors C7, C8, C11, and C12. Pin 10 of transformer T2 is electrically connected to the positive electrodes of polar capacitors EC7, EC8, EC11, and EC12. Pin 11 of transformer T2 is electrically connected to the negative electrode of diode DK, one end of resistor R4, one end of resistor R3, and the negative electrode of zener diode D2. The positive electrode of zener diode D2 is electrically connected to one end of capacitor C4, the positive electrode of diode DK, the negative electrodes of polar capacitors EC7, EC8, EC11, and EC12. The other end of resistor R4 is electrically connected to the other end of resistor R3 and the other end of capacitor C4. The negative electrode of polar capacitor C12 is connected to signal ground. The positive electrode of polar capacitor C11 outputs VIN;The described optocoupler feedback circuit includes optocoupler U5, precision voltage regulator Q2, resistor R10, resistor R11, resistor R14, resistor R17, and resistor R23. One pin of the optocoupler U5 is electrically connected to one end of resistor R10 and one end of resistor R11 respectively. The other end of resistor R10 is electrically connected to one end of resistor R14 and the positive electrode of polar capacitor EC12 respectively. One pin of the optocoupler U5 is electrically connected to the other end of resistor R11, one end of capacitor C9, and one pin of precision voltage regulator Q2 respectively. The other end of capacitor C9 is electrically connected to one end of resistor R17. The other end of resistor R17 is electrically connected to the other end of resistor R14, the 3rd pin of precision voltage regulator Q2, and one end of resistor R13 respectively. The 2nd pin of precision voltage regulator Q2 is electrically connected to the other end of resistor R13, and the 2nd pin of precision voltage regulator Q2 is connected to signal ground.;

[0033] The described AHB control circuit includes a protocol control circuit, a first step-down circuit, and a second step-down circuit. The protocol control circuit includes chip IC100, diode D100, diode D101, programming port P101, resistor R101, resistor R108, resistor R109, resistor R110, resistor R111, resistor R118, resistor R119, resistor R120, resistor R121, capacitor C111, capacitor C117, capacitor C122, capacitor C123, and capacitor C125. The 1-pin of the chip IC100 is electrically connected to one end of the resistor R111 and one end of the capacitor C117. The other end of the resistor R111 is electrically connected to the 1-pin of the programming port P101, the negative electrode of the diode D100, the negative electrode of the diode D101, one end of the capacitor C125, and the 6-pin of the chip IC100. The other end of the capacitor C117 is electrically connected to the 4-pin of the chip IC100, and the other end of the capacitor C117 is connected to the signal ground. The 5-pin of the chip IC100 is electrically connected to one end of the capacitor C122 and one end of the capacitor C123. The other end of the capacitor C122 is electrically connected to the other end of the capacitor C123, and the other end of the capacitor C122 is connected to the signal ground. The other end of the capacitor C125 is connected to the signal ground. The 7-pin of the chip IC100 is electrically connected to one end of the resistor R118. The 8-pin of the chip IC100 is electrically connected to one end of the resistor R119. The 9-pin of the chip IC100 is electrically connected to one end of the resistor R120. The 10-pin of the chip IC100 is electrically connected to one end of the resistor R121. The other end of the resistor R118 is electrically connected to the other end of the resistor R119, the other end of the resistor R120, and the other end of the resistor R121. The other end of the resistor R118 is electrically connected to the 1-pin of the programming port P101. The 14-pin of the chip IC100 is electrically connected to the 2-pin of the programming port P101. The 15-pin of the chip IC100 is electrically connected to the 3-pin of the programming port P101. The 4-pin of the programming port P101 is connected to the signal ground. The 16-pin of the chip IC100 is electrically connected to one end of the capacitor C111 and one end of the resistor R109. The other end of the resistor R109 is electrically connected to one end of the resistor R108 and one end of the resistor R110. The other end of the resistor R108 is connected to VIN.The other end of the resistor R110 is connected to the signal ground; the first step-down circuit includes a chip U100, an electrostatic protection ESD100, a MOS transistor Q100, a MOS transistor Q101, a Type-C interface P100, a resistor R100, a resistor R101, a resistor R102, a resistor R103, a resistor R104, a resistor R105, a resistor R106, a resistor R107, a capacitor C100, a capacitor C101, a capacitor C102, a capacitor C103, a capacitor C104, a capacitor C105, a capacitor C106, a capacitor C107, a capacitor C108, a capacitor C109, a capacitor C112, a capacitor C113, a capacitor C114 and a polar capacitor EC9. The 1-pin of the chip U100 is electrically connected to one end of the resistor R100. The other end of the resistor R100 is respectively electrically connected to one end of the capacitor C103 and the B5-pin of the Type-C interface P100. The other end of the capacitor C103 is connected to the signal ground. The 2-pin of the chip U100 is electrically connected to one end of the resistor R104. The other end of the resistor R104 is respectively electrically connected to one end of the capacitor C105 and the A5-pin of the Type-C interface P100. The other end of the capacitor C105 is connected to the signal ground. The 3-pin of the chip U100 is electrically connected to one end of the resistor R105. The other end of the resistor R105 is respectively electrically connected to the A6-pin of the Type-C interface P100 and the B6-pin of the Type-C interface P100. The 4-pin of the chip U100 is electrically connected to one end of the resistor R101. The other end of the resistor R101 is respectively electrically connected to the A7-pin of the Type-C interface P100 and the B7-pin of the Type-C interface P100. The 12-pin of the chip U100 is electrically connected to one end of the capacitor C114. The other end of the capacitor C114 is respectively electrically connected to the 13-pin of the chip U100 and one end of the capacitor C113. The other end of the capacitor C113 is respectively electrically connected to the 14-pin of the chip U100 and the positive pole of the diode D100. The 13-pin of the chip U100 is connected to the signal ground. The 15-pin of the chip U100 is electrically connected to one end of the capacitor C112. The other end of the capacitor C112 is respectively electrically connected to the 18-pin of the chip U100, the 1-pin of the MOS transistor Q100, the 2-pin of the MOS transistor Q100, the 3-pin of the MOS transistor Q100, the 5-pin of the MOS transistor Q101, the 6-pin of the MOS transistor Q101, the 7-pin of the MOS transistor Q101, the 8-pin of the MOS transistor Q101, one end of the resistor R107 and one end of the inductor L100. The 16-pin of the chip U100 is electrically connected to the 4-pin of the MOS transistor Q101. The 1-pin of the MOS transistor Q101 is respectively electrically connected to the 2-pin of the MOS transistor Q101 and the 3-pin of the MOS transistor Q101. The 1-pin of the MOS transistor Q101 is connected to the signal ground.Pin 17 of the chip U100 is electrically connected to pin 4 of the MOS transistor Q100. Pin 5 of the MOS transistor Q100 is electrically connected to pin 6 of the MOS transistor Q100, pin 7 of the MOS transistor Q100, pin 8 of the MOS transistor Q100, pin 19 of the chip U100, one end of the capacitor C102, and one end of the capacitor C101. The other end of the capacitor C102 is electrically connected to the other end of the capacitor C101. The other end of the capacitor C101 is connected to the signal ground. One end of the capacitor C101 is connected to VIN. The other end of the resistor R107 is electrically connected to one end of the capacitor C108. The other end of the capacitor C108 is connected to the signal ground. The other end of the inductor L100 is electrically connected to one end of the capacitor C109, the positive electrode of the polarized capacitor EC9, one end of the resistor R106, and one end of the capacitor C106. The other end of the capacitor C109 is electrically connected to the negative electrode of the polarized capacitor EC9. The negative electrode of the polarized capacitor EC9 is connected to the signal ground. Pin 6 of the chip U100 is electrically connected to pin 8 of the chip U100, pin 9 of the chip U100, and one end of the capacitor C106. Pin 7 of the chip U100 is electrically connected to the other end of the capacitor C106, the other end of the resistor R106, pin 10 of the chip U100, one end of the capacitor C107, pin A4 of the Type-C interface P100, pin B4 of the Type-C interface P100, pin A9 of the Type-C interface P100, and pin B9 of the Type-C interface P100. The other end of the capacitor C107 is connected to the signal ground. The other end of the capacitor C107 is respectively connected to pin A1 of the Type-C interface P100, pin B1 of the Type-C interface P100, pin A12 of the Type-C interface P100, and pin B12 of the Type-C interface P100. Pin 20 of the chip U100 is electrically connected to pin 8 of the chip IC100. Pin 21 of the chip U100 is electrically connected to pin 7 of the chip IC100. Pin 24 of the chip U100 is electrically connected to one end of the resistor R103. The other end of the resistor R103 is connected to the signal ground. Pin 25 of the chip U100 is electrically connected to one end of the resistor R102 and one end of the capacitor C100. The other end of the resistor R102 is electrically connected to one end of the capacitor C104. The other end of the capacitor C104 is electrically connected to the other end of the capacitor C100. The other end of the capacitor C104 is connected to the signal ground. Pin 26 of the chip U100 is electrically connected to pin 29 of the chip U100. Pin 26 of the chip U100 is connected to the signal ground. Pin 1 of the electrostatic protection ESD100 is electrically connected to the other end of the resistor R101. Pin 2 of the electrostatic protection ESD100 is electrically connected to the other end of the resistor R105.The 4-pin of the described electrostatic protection ESD100 is electrically connected to the other end of the resistor R104. The 5-pin of the electrostatic protection ESD100 is electrically connected to the other end of the resistor R100. The 3-pin of the electrostatic protection ESD100 is electrically connected to the 8-pin of the electrostatic protection ESD100, and the 3-pin of the electrostatic protection ESD100 is connected to the signal ground. The second step-down circuit includes the chip U101, the electrostatic protection ESD101, the MOS transistor Q102, the MOS transistor Q103, the Type-C interface P102, the resistors R112, R113, R114, R115, R116, R117, R124, R125, the capacitors C115, C116, C118, C119, C120, C121, C124, C126, C127, C128, C132, C134, and the polarized capacitor EC10. The 1-pin of the chip U101 is electrically connected to one end of the resistor R112. The other end of the resistor R112 is respectively electrically connected to one end of the capacitor C116, the B5 pin of the Type-C interface P102, and the 5-pin of the electrostatic protection ESD101. The other end of the capacitor C116 is connected to the signal ground. The 2-pin of the chip U101 is electrically connected to one end of the resistor R113. The other end of the resistor R113 is respectively electrically connected to one end of the capacitor C120, the A5 pin of the Type-C interface P102, and the 4-pin of the electrostatic protection ESD101. The other end of the capacitor C120 is connected to the signal ground. The 3-pin of the chip U101 is electrically connected to one end of the resistor R117. The other end of the resistor R117 is respectively electrically connected to the 2-pin of the electrostatic protection ESD101, the A6 pin of the Type-C interface P102, and the B6 pin of the Type-C interface P102. The 4-pin of the chip U101 is electrically connected to one end of the resistor R116. The other end of the resistor R116 is respectively electrically connected to the 2-pin of the electrostatic protection ESD101, the A7 pin of the Type-C interface P102, and the B7 pin of the Type-C interface P102. The 6-pin of the chip U101 is electrically connected to one end of the capacitor C126. The 7-pin of the chip U101 is electrically connected to the other end of the capacitor C126. The 8-pin of the chip U101 is respectively electrically connected to the 9-pin of the chip U101 and the 6-pin of the chip U101. The 10-pin of the chip U101 is electrically connected to the other end of the capacitor C126. The 12-pin of the chip U101 is electrically connected to one end of the capacitor C134. The other end of the capacitor C134 is respectively electrically connected to the 13-pin of the chip U101 and one end of the capacitor C132. The other end of the capacitor C132 is electrically connected to the 14-pin of the chip U101.The 13th pin of the chip U101 is connected to the signal ground. The other end of the capacitor C113 is electrically connected to the 14th pin of the chip U100 and the positive electrode of the diode D100 respectively. The positive electrode of the diode D101 is electrically connected to the 14th pin of the chip U101. The 15th pin of the chip U101 is electrically connected to one end of the capacitor C130. The other end of the capacitor C130 is electrically connected to the 18th pin of the chip U101, the 1st pin of the MOS transistor Q102, the 2nd pin of the MOS transistor Q102, the 3rd pin of the MOS transistor Q102, the 5th pin of the MOS transistor Q103, the 6th pin of the MOS transistor Q103, the 7th pin of the MOS transistor Q103, the 8th pin of the MOS transistor Q103, one end of the resistor R125 and one end of the inductor L101 respectively. The 16th pin of the chip U101 is electrically connected to the 4th pin of the MOS transistor Q103. The 1st pin of the MOS transistor Q103 is electrically connected to the 2nd pin and the 3rd pin of the MOS transistor Q103 respectively. The 1st pin of the MOS transistor Q103 is connected to the signal ground. The 17th pin of the chip U101 is electrically connected to the 4th pin of the MOS transistor Q102. The 5th pin of the MOS transistor Q102 is electrically connected to the 6th pin, the 7th pin, the 8th pin of the MOS transistor Q102, the 19th pin of the chip U101, one end of the capacitor C119 and one end of the capacitor C118 respectively. The other end of the capacitor C119 and the other end of the capacitor C118 are electrically connected. The other end of the capacitor C118 is connected to the signal ground. One end of the capacitor C118 is connected to VIN. The 20th pin of the chip U101 is electrically connected to the 10th pin of the chip IC100. The 21st pin of the chip U101 is electrically connected to the 9th pin of the chip IC100. The 24th pin of the chip U101 is electrically connected to one end of the resistor R115. The other end of the resistor R115 is connected to the signal ground. The 25th pin of the U101 is electrically connected to one end of the resistor R114 and one end of the capacitor C115 respectively. The other end of the resistor R114 is electrically connected to one end of the capacitor C121. The other end of the capacitor C121 and the other end of the capacitor C115 are electrically connected. The other end of the capacitor C121 is connected to the signal ground. The 26th pin of the chip U101 is electrically connected to the 29th pin of the chip U101. The 26th pin of the chip U101 is connected to the signal ground. The other end of the resistor R125 is electrically connected to one end of the capacitor C127. The other end of the capacitor C127 is connected to the signal ground. The other end of the inductor L101 is electrically connected to one end of the capacitor C128, the positive electrode of the polarized capacitor EC10, one end of the resistor R124 and one end of the capacitor C126 respectively. The other end of the capacitor C128 and the negative electrode of the polarized capacitor EC10 are electrically connected. The negative electrode of the polarized capacitor EC10 is connected to the signal ground.The other end of the resistor R124 is electrically connected to the other end of the capacitor C126, the 10th pin of the chip U101, one end of the capacitor C124, the A4 pin of the Type-C interface P102, the B4 pin of the Type-C interface P102, the A9 pin of the Type-C interface P102, and the B9 pin of the Type-C interface P102. The other end of the capacitor C124 is connected to the signal ground. The other end of the capacitor C124 is electrically connected to the A1 pin of the Type-C interface P102, the B1 pin of the Type-C interface P102, the A12 pin of the Type-C interface P102, and the B12 pin of the Type-C interface P102.

[0034] The above are only specific embodiments of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present invention are covered by the patent scope of the present invention.

Claims

1. A charging power supply based on PFC and AHB, comprising a power interface AC, a PFC boost circuit, an AHB control circuit, a Type-C interface P100 and a Type-C interface P102, characterized in that: A rectifier and filter circuit is provided between the power interface AC and the PFC boost circuit, a rectifier AHB control circuit is provided between the AHB control circuit and the Type-C interface P100, the power input end of the PFC boost circuit, the power input end of the AHB control circuit, the power input end of the Type-C interface P100, the power input end of the Type-C interface P102, the power input end of the rectifier and filter circuit, and the power input end of the rectifier AHB control circuit are respectively electrically connected to the power output end of the power interface AC, and the control end of the PFC boost circuit, the control end of the Type-C interface P100, the control end of the Type-C interface P102, the control end of the rectifier and filter circuit, and the control end of the rectifier AHB control circuit are respectively electrically connected to the signal transmission end of the AHB control circuit.

2. The charging power supply based on PFC and AHB according to claim 1, characterized in that: The rectifier and filter circuit includes a differential common mode filter circuit, a full-bridge rectifier circuit, and a type II filter circuit. The output end of the power interface AC is electrically connected to the input end of the differential common mode filter circuit, the output end of the differential common mode filter circuit is electrically connected to the input end of the full-bridge rectifier circuit, the output end of the full-bridge rectifier circuit is electrically connected to the input end of the type II filter circuit, and the output end of the type II filter circuit is electrically connected to the input end of the PFC boost circuit.

3. The charging power supply based on PFC and AHB according to claim 2, characterized in that: The differential common mode filter circuit includes a fuse F1, a transformer LF1, a transformer LF2, a capacitor CX1, a capacitor CY1, a capacitor CY2, a capacitor CY3, a diode D4, a diode D5 and a resistor R24, one end of the fuse F1 is electrically connected to pin 1 of the power interface AC, the other end of the fuse F1 is electrically connected to pin 1 of the transformer LF1, pin 2 of the transformer LF1 is electrically connected to pin 2 of the power interface AC, one end of the capacitor CX1 is electrically connected to pins 4 of the transformer LF1 and pin 1 of the transformer LF2, and the other end of the capacitor CX1 is electrically connected to pins 3 of the transformer LF1. The pin is electrically connected to the 2nd pin of the transformer LF2, the 3rd pin of the transformer LF2 is electrically connected to the positive electrode of the diode D5 and the full-bridge rectifier circuit respectively, the negative electrode of the diode D5 is electrically connected to one end of the resistor R24 ​​and the negative electrode of the diode D4 respectively, the other end of the resistor R24 ​​is electrically connected to the AHB control circuit, the positive electrode of the diode D4 is electrically connected to the full-bridge rectifier circuit, the other end of the capacitor CX1 is electrically connected to one end of CY3, the other end of CY3 is electrically connected to one end of CY2 and one end of CY1 respectively, the other end of CY3 is connected to the signal ground, and the other end of CY2 is grounded.

4. The charging power supply based on PFC and AHB according to claim 3 is characterized in that: The full-bridge rectifier circuit includes a rectifier bridge BD1 and a rectifier bridge BD2. Pin 1 of the rectifier bridge BD1 is electrically connected to the positive electrode of the diode D4, the 4th pin of the transformer LF2 and the 3rd pin of the rectifier bridge BD1, respectively. Pin 1 of the rectifier bridge BD2 is electrically connected to the positive electrode of the diode D5, the 3rd pin of the transformer LF2 and the 3rd pin of the rectifier bridge BD2, respectively. Pin 2 of the rectifier bridge BD1, pin 4 of the rectifier bridge BD1, pin 2 of the rectifier bridge BD2 and pin 4 of the rectifier bridge BD2 are electrically connected to the type II filter circuit, respectively.

5. The charging power supply based on PFC and AHB according to claim 4 is characterized in that: The type II filter circuit includes capacitor CB1, capacitor CB2, capacitor CB4 and inductor L1, one end of the inductor L1 is electrically connected to pin 4 of rectifier bridge BD1, pin 4 of rectifier bridge BD2 and one end of capacitor CB2, the other end of the inductor L1 is electrically connected to one end of capacitor CB1 and one end of capacitor CB4, the other end of capacitor CB1, the other end of capacitor CB2, the other end of capacitor CB4, pin 2 of rectifier bridge BD1 and pin 2 of rectifier bridge BD2 are electrically connected, and the other end of capacitor CB1 is grounded.

6. The charging power supply based on PFC and AHB according to claim 5, characterized in that: The PFC boost circuit includes a chip U4, a MOS tube Q1, an inductor T1, an inductor L1, an inductor BEAD1, a diode D1, a diode U1, a diode D3, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C13, a resistor R1, a resistor R2, a resistor R5, a resistor R6, a resistor R8, a resistor R9, a resistor R12, a resistor R13, a resistor R15, a resistor R16, a resistor R18, a resistor R19, a resistor R20, a resistor R21 and a resistor R22. One end of the inductor T1 is electrically connected to the positive electrode of the diode D1 and one end of the capacitor CB4 respectively, and the negative electrode of the diode D1 is electrically connected to the diode U1 respectively. The cathode of the diode U1 is electrically connected to one end of the resistor R1, the anode of the diode U1 is electrically connected to the other end of the inductor T1, one end of the capacitor C5, one end of the resistor R2 and one end of the inductor L2, the other end of the inductor L2 is electrically connected to the 2nd pin of the MOS tube Q1, the other end of the resistor R2 is electrically connected to one end of the resistor R5, the other end of the capacitor C5 is electrically connected to the other end of the resistor R5, one end of the resistor R15, one end of the capacitor C8 and one end of the resistor R18, the other end of the resistor R15 is electrically connected to the other end of the capacitor C8, one end of the resistor R19, one end of the resistor R20, one end of the resistor R21, one end of the resistor R12 and the 3rd pin of the MOS tube Q1. The MOS tube Q1 is electrically connected to one end of the inductor BEAD1, and the other end of the inductor BEAD1 is electrically connected to one end of the resistor R8, the other end of the resistor R12 and one end of the resistor R13 respectively. The other end of the resistor R8 is electrically connected to the positive electrode of the diode D3, and the negative electrode of the diode D3 is electrically connected to the 5 pins of the chip U4 and the other end of the resistor R13 respectively. The 2 pins of the chip U4 are electrically connected to the other end of the resistor R18 and one end of the capacitor C13 respectively. The other end of the capacitor C13 is electrically connected to the other end of the resistor R19, the other end of the resistor R20, the other end of the resistor R21 and one end of the resistor R22 respectively. The other end of 21 is grounded, the other end of the resistor R22 is electrically connected to one end of the resistor R9, one end of the capacitor C12 and pin 1 of the chip U4, the other end of the resistor R9 is electrically connected to one end of the resistor R6, the other end of the resistor R6 is electrically connected to the other end of the resistor R1, the other end of the capacitor C12 is electrically connected to one end of the capacitor C11, one end of the capacitor C10, one end of the capacitor C7, one end of the capacitor C6 and pin 4 of the chip U4, the pin 4 of the chip U4 is grounded, the other end of the capacitor C11 is electrically connected to one end of the resistor R16, the other end of the resistor R16 is electrically connected to the other end of the capacitor C10 and pin 6 of the chip U4,The other end of the capacitor C7 is electrically connected to the other end of the capacitor C6 and the 3rd pin of the chip U4.

7. The charging power supply based on PFC and AHB according to claim 6, characterized in that: The AHB control circuit includes a chip U6, a polar capacitor EC5, a polar capacitor EC6, a capacitor CB3, a capacitor C14, a capacitor C15, a capacitor C16, a transformer T2, a resistor RS1, a resistor RS2, a resistor RS3, a resistor R7, a resistor R25, a resistor R27, a resistor R26, a resistor R28, a resistor R29, a resistor R30, a resistor R31, a diode D6, a diode D7, a diode D8, a voltage regulator diode D9 and a MOS tube Q3. Pin 1 of the chip U6 is electrically connected to one end of the resistor RS1, one end of the resistor RS2 and one end of the resistor RS3 respectively. One end of the resistor RS1 is connected to the protection ground. Pin 2 of the chip U6 is electrically connected to the other end of the resistor RS3 respectively. , the other end of the resistor RS2 is electrically connected to the other end of the resistor RS1, the negative electrode of the polarity capacitor EC1 is grounded, the 3 pins of the chip U6 are electrically connected to one end of the resistor R30 and one end of the resistor R31 respectively, the 4 pins of the chip U6 are electrically connected to one end of the capacitor C16, the other end of the capacitor C16 is electrically connected to one end of the capacitor C15, the 6 pins of the chip U6 and the 12 pins of the chip U6 respectively, the 12 pins of the chip U6 are connected to the protection ground, the 5 pins of the chip U6 are electrically connected to the other end of the capacitor C15, the other end of the capacitor C15 is electrically connected to one end of the resistor R26, the positive electrode of the polarity capacitor EC6, the negative electrode of the diode D7, and the 1 pin of the MOS tube Q3 respectively. The pin of the MOS tube Q3 is electrically connected to one end of the resistor R29, the other end of the resistor R26 is electrically connected to the 3rd pin of the chip U4, the other end of the resistor R25 is electrically connected to the positive electrode of the diode D6, the other end of the resistor R24 ​​is electrically connected to the 7th pin of the chip U6, the negative electrode of the diode D6 is electrically connected to the 8th pin of the chip U6 and one end of the capacitor C14, the other end of the capacitor C14 is electrically connected to the 9th pin of the chip U6, the 11th pin of the chip U6, one end of the resistor R7 and one end of the capacitor CB3, the other end of the resistor R7 is electrically connected to the other end of the capacitor CB3, the 2nd pin of the MOS tube Q3 is electrically connected to one end of the resistor R29 and the positive electrode of the polarity capacitor EC5, respectively. The 3 pins of the MOS tube Q3 are respectively electrically connected to the negative electrode of the voltage zener diode D9 and the other end of the resistor R29, the positive electrode of the voltage zener diode D9 is respectively electrically connected to the negative electrode of the polarity capacitor EC6, the negative electrode of the polarity capacitor EC5, the other end of the resistor R31 and the 8 pin of the transformer T2, the other end of the resistor R31 is connected to the protection ground, the positive electrode of the diode D8 is electrically connected to one end of the resistor R28, the other end of the resistor R28 is respectively electrically connected to the other end of the resistor R30 and the 2 pins of the transformer T2, the 1 pin of the transformer T2 is electrically connected to one end of the resistor R27, and the other end of the resistor R27 is electrically connected to the positive electrode of the diode D7.

8. The charging power supply based on PFC and AHB according to claim 7, characterized in that: The rectification control circuit includes an isolation transformer circuit, an optocoupler feedback circuit, a synchronous rectification circuit and an AHB control circuit. The isolation transformer circuit includes a polar capacitor EC1, a polar capacitor EC2, a polar capacitor EC3, a polar capacitor EC4, a capacitor C1, a capacitor C3, an inductor L3 and an inductor L4. One end of the capacitor C3 is respectively connected to one end of the resistor R1, the positive electrode of the polar capacitor EC1, the positive electrode of the polar capacitor EC2, the positive electrode of the polar capacitor EC3, the positive electrode of the polar capacitor EC4, one end of the capacitor C1, one end of the inductor L4, and the inductor L4. One end of L3 is electrically connected to the 4th pin of transformer T2, the 4th pin of transformer T2 outputs Vout, the other end of capacitor CY1 is connected to Vout, the other end of capacitor C3 is grounded, the negative electrode of polar capacitor EC1, the negative electrode of polar capacitor EC2, the negative electrode of polar capacitor EC3, the negative electrode of polar capacitor EC4, the other end of capacitor C1 and the other end of resistor RS1 are electrically connected, the negative electrode of polar capacitor EC1 is grounded, the other end of inductor L4 is respectively connected to the other end of inductor L3 and 1 of chip U6 0 pin is electrically connected, and the 6 pin of the transformer T2 is electrically connected to the other end of the capacitor CB3; the synchronous rectification circuit includes a voltage stabilizing diode D2, a diode DK, a capacitor C4, a polar capacitor C7, a polar capacitor C8, a polar capacitor C11 and a polar capacitor C12, the 10 pin of the transformer T2 is electrically connected to the positive electrode of the polar capacitor EC7, the positive electrode of the polar capacitor EC8, the positive electrode of the polar capacitor EC11 and the positive electrode of the polar capacitor EC12, and the 11 pin of the transformer T2 is electrically connected to the negative electrode of the diode DK, the resistor R 4, one end of the resistor R3 and the negative electrode of the voltage zener diode D2 are electrically connected, the positive electrode of the voltage zener diode D2 is electrically connected to one end of the capacitor C4, the positive electrode of the diode DK, the negative electrode of the polar capacitor EC7, the negative electrode of the polar capacitor EC8, the negative electrode of the polar capacitor EC11 and the negative electrode of the polar capacitor EC12, the other end of the resistor R4 is electrically connected to the other end of the resistor R3 and the other end of the capacitor C4, the negative electrode of the polar capacitor EC12 is connected to the signal ground, and the positive electrode of the polar capacitor EC11 outputs VIN;The optocoupler feedback circuit includes an optocoupler U5, a controllable precision voltage regulator Q2, a resistor R10, a resistor R11, a resistor R14, a resistor R17 and a resistor R23. Pin 1 of the optocoupler U5 is electrically connected to one end of the resistor R10 and one end of the resistor R11 respectively. The other end of the resistor R10 is electrically connected to one end of the resistor R14 and the positive pole of the polar capacitor EC12 respectively. Pin 2 of the optocoupler U5 is electrically connected to the other end of the resistor R11, one end of the capacitor C9 and pin 1 of the controllable precision voltage regulator Q2 respectively. The other end of the capacitor C9 is electrically connected to one end of the resistor R17. The other end of the resistor R17 is electrically connected to the other end of the resistor R14, pin 3 of the controllable precision voltage regulator Q2 and one end of the resistor R13 respectively. Pin 2 of the controllable precision voltage regulator Q2 is electrically connected to the other end of the resistor R13. Pin 2 of the controllable precision voltage regulator Q2 is connected to the signal ground. ; 9. The charging power supply based on PFC and AHB according to claim 8, characterized in that: The AHB control circuit includes a protocol control circuit, a first step-down circuit and a second step-down circuit. The protocol control circuit includes a chip IC100, a diode D100, a diode D101, a burning port P101, a resistor R101, a resistor R108, a resistor R109, a resistor R110, a resistor R111, a resistor R118, a resistor R119, a resistor R120, a resistor R121, a capacitor C111, a capacitor C117, a capacitor C122, a capacitor C123 and a capacitor C125. Pin 1 of the chip IC100 is respectively connected to one end of the resistor R111 and the capacitor C117. The other end of the resistor R111 is electrically connected to the 1st pin of the burning port P101, the cathode of the diode D100, the cathode of the diode D101, one end of the capacitor C125 and the 6th pin of the chip IC100, the other end of the capacitor C117 is electrically connected to the 4th pin of the chip IC100, the other end of the capacitor C117 is connected to the signal ground, the 5th pin of the chip IC100 is electrically connected to one end of the capacitor C122 and one end of the capacitor C123, the other end of the capacitor C122 is electrically connected to the other end of the capacitor C123, and the capacitor The other end of C122 is connected to the signal ground, the other end of the capacitor C125 is connected to the signal ground, the 7th pin of the chip IC100 is electrically connected to one end of the resistor R118, the 8th pin of the chip IC100 is electrically connected to one end of the resistor R119, the 9th pin of the chip IC100 is electrically connected to one end of the resistor R120, the 10th pin of the chip IC100 is electrically connected to one end of the resistor R121, the other end of the resistor R118 is electrically connected to the other end of the resistor R119, the other end of the resistor R120 and the other end of the resistor R121 respectively, and the resistor R The other end of 118 is electrically connected to pin 1 of the programming port P101, pin 14 of the chip IC100 is electrically connected to pin 2 of the programming port P101, pin 15 of the chip IC100 is electrically connected to pin 3 of the programming port P101, pin 4 of the programming port P101 is connected to the signal ground, pin 16 of the chip IC100 is electrically connected to one end of the capacitor C111 and one end of the resistor R109 respectively, the other end of the resistor R109 is electrically connected to one end of the resistor R108 and one end of the resistor R110 respectively, the other end of the resistor R108 is connected to VIN,The other end of the resistor R110 is connected to the signal ground; the step-down circuit No. 1 includes a chip U100, an electrostatic protection ESD100, a MOS tube Q100, a MOS tube Q101, a Type-C interface P100, a resistor R100, a resistor R101, a resistor R102, a resistor R103, a resistor R104, a resistor R105, a resistor R106, a resistor R107, a capacitor C100, a capacitor C101, a capacitor C102, a capacitor C103, a capacitor C104, a capacitor C105, a capacitor C106, a capacitor C107, a capacitor C108, a capacitor C109, a capacitor C112, a capacitor C113, a capacitor C114 and a polarity capacitor EC9, and a pin 1 of the chip U100 is connected to the resistor R The first embodiment of the present invention is a chip U100 and a chip U100, wherein the first and second ends of the resistor R100 are electrically connected to one end of the resistor R104, and the second and second ends of the resistor R104 are electrically connected to one end of the capacitor C105 and the A5 pin of the Type-C interface P100, and the other end of the capacitor C105 is electrically connected to the signal ground. The first and second pins of the chip U100 are electrically connected to one end of the resistor R105, and the other end of the resistor R105 is electrically connected to the A6 pin of the Type-C interface P100 and the B6 pin of the Type-C interface P100, respectively. The pins are electrically connected, the 4 pins of the chip U100 are electrically connected to one end of the resistor R101, the other end of the resistor R101 is electrically connected to the A7 pin of the Type-C interface P100 and the B7 pin of the Type-C interface P100, the 12 pins of the chip U100 are electrically connected to one end of the capacitor C114, the other end of the capacitor C114 is electrically connected to the 13 pins of the chip U100 and one end of the capacitor C113, the other end of the capacitor C113 is electrically connected to the 14 pins of the chip U100 and the positive electrode of the diode D100, the 13 pins of the chip U100 are connected to the signal ground, the 15 pins of the chip U100 are connected to one end of the capacitor C112, and the 16 pins of the chip U100 are connected to the positive electrode of the diode D100. The other end of the capacitor C112 is electrically connected to the 18th pin of the chip U100, the 1st pin of the MOS tube Q100, the 2nd pin of the MOS tube Q100, the 3rd pin of the MOS tube Q100, the 5th pin of the MOS tube Q101, the 6th pin of the MOS tube Q101, the 7th pin of the MOS tube Q101, the 8th pin of the MOS tube Q101, one end of the resistor R107 and one end of the inductor L100 respectively, the 16th pin of the chip U100 is electrically connected to the 4th pin of the MOS tube Q101, the 1st pin of the MOS tube Q101 is electrically connected to the 2nd pin of the MOS tube Q101 and the 3rd pin of the MOS tube Q101 respectively, and the 1st pin of the MOS tube Q101 is connected to the signal ground,Pin 17 of the chip U100 is electrically connected to pin 4 of the MOS tube Q100, pin 5 of the MOS tube Q100 is electrically connected to pin 6 of the MOS tube Q100, pin 7 of the MOS tube Q100, pin 8 of the MOS tube Q100, pin 19 of the chip U100, one end of the capacitor C102 and one end of the capacitor C101 are electrically connected, the other end of the capacitor C102 and the other end of the capacitor C101 are electrically connected, the other end of the capacitor C101 is connected to the signal ground, one end of the capacitor C101 is connected to VIN, the other end of the resistor R107 is electrically connected to one end of the capacitor C108, the other end of the capacitor C108 is connected to the signal ground, and the inductor L1 The other end of 00 is respectively electrically connected to one end of capacitor C109, the positive electrode of polar capacitor EC9, one end of resistor R106 and one end of capacitor C106, the other end of capacitor C109 is electrically connected to the negative electrode of polar capacitor EC9, the negative electrode of polar capacitor EC9 is connected to signal ground, pin 6 of chip U100 is respectively electrically connected to pin 8 of chip U100, pin 9 of chip U100 and one end of capacitor C106, pin 7 of chip U100 is respectively electrically connected to the other end of capacitor C106, the other end of resistor R106, pin 10 of chip U100, one end of capacitor C107, pin A4 of Type-C interface P100, pin B4 of Type-C interface P100 The pin of the chip U100 is electrically connected to the pin A9 of the Type-C interface P100 and the pin B9 of the Type-C interface P100, the other end of the capacitor C107 is connected to the signal ground, the other end of the capacitor C107 is respectively connected to the pin A1 of the Type-C interface P100, the pin B1 of the Type-C interface P100, the pin A12 of the Type-C interface P100 and the pin B12 of the Type-C interface P100, the pin 20 of the chip U100 is electrically connected to the pin 8 of the chip IC100, the pin 21 of the chip U100 is electrically connected to the pin 7 of the chip IC100, the pin 24 of the chip U100 is electrically connected to one end of the resistor R103, and the The other end of the resistor R103 is connected to the signal ground, the 25th pin of the chip U100 is electrically connected to one end of the resistor R102 and one end of the capacitor C100 respectively, the other end of the resistor R102 is electrically connected to one end of the capacitor C104, the other end of the capacitor C104 is electrically connected to the other end of the capacitor C100, the other end of the capacitor C104 is connected to the signal ground, the 26th pin of the chip U100 is electrically connected to the 29th pin of the chip U100, the 26th pin of the chip U100 is connected to the signal ground, the 1st pin of the electrostatic protection ESD100 is electrically connected to the other end of the resistor R101, the 2nd pin of the electrostatic protection ESD100 is electrically connected to the other end of the resistor R105,Pin 4 of the electrostatic protection ESD100 is electrically connected to the other end of the resistor R104, pin 5 of the electrostatic protection ESD100 is electrically connected to the other end of the resistor R100, pin 3 of the electrostatic protection ESD100 is electrically connected to pin 8 of the electrostatic protection ESD100, and pin 3 of the electrostatic protection ESD100 is connected to the signal ground; the second step-down circuit includes chip U101, electrostatic protection ESD101, MOS tube Q102, MOS tube Q103, Type-C interface P102, resistor R112, resistor R113, resistor R114, resistor R115, resistor R116, resistor R117, resistor R124, resistor R125, capacitor C1 15, capacitor C116, capacitor C118, capacitor C119, capacitor C120, capacitor C121, capacitor C124, capacitor C126, capacitor C127, capacitor C128, capacitor C132, capacitor C134 and polarity capacitor EC10, pin 1 of the chip U101 is electrically connected to one end of the resistor R112, the other end of the resistor R112 is electrically connected to one end of the capacitor C116 and the B5 pin of the Type-C interface P102 and the 5 pin of the electrostatic protection ESD101, the other end of the capacitor C116 is connected to the signal ground, pin 2 of the chip U101 is electrically connected to one end of the resistor R113, the other end of the resistor R113 is electrically connected to the capacitor C1 One end of the capacitor C120 is electrically connected to the A5 pin of the Type-C interface P102 and the 4 pin of the electrostatic protection ESD101, the other end of the capacitor C120 is connected to the signal ground, the 3 pin of the chip U101 is electrically connected to one end of the resistor R117, the other end of the resistor R117 is electrically connected to the 2 pin of the electrostatic protection ESD101, the A6 pin of the Type-C interface P102 and the B6 pin of the Type-C interface P102, the 4 pin of the chip U101 is electrically connected to one end of the resistor R116, the other end of the resistor R116 is electrically connected to the 2 pin of the electrostatic protection ESD101, the A7 pin of the Type-C interface P102 and the B6 pin of the Type-C interface P102, respectively. The B7 pin of the chip U102 is electrically connected, the 6 pin of the chip U101 is electrically connected to one end of the capacitor C126, the 7 pin of the chip U101 is electrically connected to the other end of the capacitor C126, the 8 pin of the chip U101 is electrically connected to the 9 pin of the chip U101 and the 6 pin of the chip U101 respectively, the 10 pin of the chip U101 is electrically connected to the other end of the capacitor C126, the 12 pin of the chip U101 is electrically connected to one end of the capacitor C134, the other end of the capacitor C134 is electrically connected to the 13 pin of the chip U101 and one end of the capacitor C132 respectively, and the other end of the capacitor C132 is electrically connected to the 14 pin of the chip U101,Pin 13 of the chip U101 is connected to the signal ground, the other end of the capacitor C113 is electrically connected to pin 14 of the chip U100 and the positive electrode of the diode D100, the positive electrode of the diode D101 is electrically connected to pin 14 of the chip U101, pin 15 of the chip U101 is electrically connected to one end of the capacitor C130, and the other end of the capacitor C130 is electrically connected to pin 18 of the chip U101, pin 1 of the MOS tube Q102, pin 2 of the MOS tube Q102, pin 3 of the MOS tube Q102, pin 5 of the MOS tube Q103, pin 6 of the MOS tube Q103, pin 7 of the MOS tube Q103, pin 8 of the MOS tube Q103, and the resistor R125. One end is electrically connected to one end of the inductor L101, the 16th pin of the chip U101 is electrically connected to the 4th pin of the MOS tube Q103, the 1st pin of the MOS tube Q103 is electrically connected to the 2nd pin of the MOS tube Q103 and the 3rd pin of the MOS tube Q103 respectively, the 1st pin of the MOS tube Q103 is connected to the signal ground, the 17th pin of the chip U101 is electrically connected to the 4th pin of the MOS tube Q102, the 5th pin of the MOS tube Q102 is electrically connected to the 6th pin of the MOS tube Q102, the 7th pin of the MOS tube Q102, the 8th pin of the MOS tube Q102, the 19th pin of the chip U101, one end of the capacitor C119 and one end of the capacitor C118 are electrically connected, the The other end of the capacitor C119 is electrically connected to the other end of the capacitor C118, the other end of the capacitor C118 is connected to the signal ground, one end of the capacitor C118 is connected to VIN, the 20th pin of the chip U101 is electrically connected to the 10th pin of the chip IC100, the 21st pin of the chip U101 is electrically connected to the 9th pin of the chip IC100, the 24th pin of the chip U101 is electrically connected to one end of the resistor R115, the other end of the resistor R115 is connected to the signal ground, the 25th pin of U101 is electrically connected to one end of the resistor R114 and one end of the capacitor C115 respectively, the other end of the resistor R114 is electrically connected to one end of the capacitor C121, and the capacitor C1 The other end of the resistor R125 is electrically connected to one end of the capacitor C127, and the other end of the capacitor C127 is connected to the signal ground. The other end of the inductor L101 is electrically connected to one end of the capacitor C128, the positive electrode of the polar capacitor EC10, one end of the resistor R124 and one end of the capacitor C126 respectively. The other end of the capacitor C128 is electrically connected to the negative electrode of the polar capacitor EC10, and the negative electrode of the polar capacitor EC10 is connected to the signal ground.The other end of the resistor R124 is electrically connected to the other end of the capacitor C126, the 10 pin of the chip U101, one end of the capacitor C124, the A4 pin of the Type-C interface P102, the B4 pin of the Type-C interface P102, the A9 pin of the Type-C interface P102, and the B9 pin of the Type-C interface P102, respectively. The other end of the capacitor C124 is connected to the signal ground, and the other end of the capacitor C124 is electrically connected to the A1 pin of the Type-C interface P102, the B1 pin of the Type-C interface P102, the A12 pin of the Type-C interface P102, and the B12 pin of the Type-C interface P102. ,

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