A bidirectional high-power charging and supply system with Type-C

Abstract

The present invention relates to a bidirectional high-power charging and power supply system with Type-C, which includes a Scaler chip, a DC-DC circuit, a PMU chip, a SUB switching module, a Type-C interface, a PD chip, and an adapter connected to the PMU chip, wherein the Scaler chip is respectively connected to the PD chip, the Type-C interface, the SUB switching module, and the DC-DC circuit, the PD chip is respectively connected to the SUB switching module, the Type-C interface, and the PMU chip, the Type-C interface is respectively connected to the SUB switching module and the PMU chip, and the PMU chip is connected to the DC-DC circuit. The circuit of the present invention is relatively simple, fully meets the charging and power supply requirements of Type-C peripherals, can identify the voltage requirements of peripherals, automatically output different voltages, and can adjust the input and output current limiting, bilateral output short-circuit protection, ensure the reliability of high-power charging and power supply, support high-power power transmission, support positive and negative symmetrical plugging and unplugging, both power transmission and power reception, and can charge peripherals with 65w high power through the Type-C interface.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a bidirectional high-power charging and supplying system with Type-C. Background Art

[0002] At present, with the recent rise of Type-C products, more and more monitors are also using Type-C ports. The monitor adapter has low power, and in most cases the Type-C port of the monitor is still used for data transmission. Currently, monitors with Type-C are basically still used to charge peripherals, or simple low-power portable charging. Many monitors on the market that support Type-C only support Type-C expansion and video input. The power supply itself is not large and can only supply the monitor itself. The maximum output of PD is 20V voltage and 5A current, which is 100W. Therefore, the interface of the monitor supports a power supply greater than 10W.

[0003] To this end, a two-way high-power charging and power supply system with Type-C is provided. For large-size displays, 65W high-power charging of peripherals can be carried out through the Type-C interface, or the display can be powered by high-power through the Type-C interface. The all-round transmission professional display with a Type-C expansion dock can be connected to the computer through the Type-C interface for audio, data transmission and 65W high-power power supply. Summary of the invention

[0004] The object of the present invention is to provide a bidirectional high-power charging and supplying system with Type-C to solve the problem that the power supply of a display with Type-C is not large.

[0005] To achieve the above object, the technical solution adopted by the present invention is: a bidirectional high-power charging and power supply system with Type-C, characterized in that it includes a Scaler chip, a DC-DC circuit, a PMU chip, a SUB switching module, a Type-C interface, a PD chip, and an adapter connected to the PMU chip, wherein the Scaler chip is respectively connected to the PD chip, the Type-C interface, the SUB switching module and the DC-DC circuit, the PD chip is respectively connected to the SUB switching module, the Type-C interface and the PMU chip, the Type-C interface is respectively connected to the SUB switching module and the PMU chip, and the PMU chip is connected to the DC-DC circuit.

[0006] A first current sampling circuit is connected between the output end of the DC-DC circuit and the PMU chip, a second current sampling circuit is connected between the output end of the PMU chip and the Type-C interface, a charging current limiting circuit and a power supply current limiting circuit are connected to the PMU chip, a first buck-boost control circuit is connected between the output end of the DC-DC circuit and the PMU chip, a second buck-boost control circuit is connected between the output end of the PMU chip and the Type-C interface, and an external voltage feedback circuit is connected between the output end of the PMU chip and the Type-C interface.

[0007] Furthermore, the first buck-boost control circuit includes a first NMOS tube and a second NMOS tube, the second buck-boost control circuit includes a third NMOS tube and a fourth NMOS tube, the output end of the DC-DC circuit is connected to the D pole of the first NMOS tube, the S pole of the first NMOS tube is connected to the D pole of the second NMOS tube, the G poles of the first NMOS tube and the second NMOS tube are both connected to the PMU chip, the S pole of the second NMOS tube is grounded, the Type-C interface is connected to the D pole of the third NMOS tube, the S pole of the third NMOS tube is connected to the D pole of the fourth NMOS tube, the G poles of the third NMOS tube and the fourth NMOS tube are both connected to the PMU chip, and the S pole of the fourth NMOS tube is grounded.

[0008] Furthermore, it also includes a freewheeling circuit, which includes a first freewheeling circuit, a second freewheeling circuit, a third freewheeling circuit and a fourth freewheeling circuit. The first freewheeling circuit includes a resistor R260, a freewheeling diode D15 and a resistor R266. The G pole of the first NMOS tube is connected to the resistor R260 and the resistor R266 in sequence and then connected to the PMU chip. The resistor R260 and the freewheeling diode D15 are connected in parallel, and the negative pole of the freewheeling diode D15 is connected to the PMU chip; the second freewheeling circuit includes a resistor R262, a freewheeling diode D17 and a resistor R262. The G pole of the second NMOS tube is connected to the resistor R262 and the resistor R265 in sequence and then connected to the PMU chip. The resistor R262 and the freewheeling diode D17 The third freewheeling circuit includes a resistor R270, a freewheeling diode D20 and a resistor R271. The G pole of the third NMOS tube is sequentially connected to the resistor R270 and the resistor R271 and then connected to the PMU chip. The resistor R270 and the freewheeling diode D20 are connected in parallel, and the cathode of the freewheeling diode D20 is connected to the PMU chip. The fourth freewheeling circuit includes a resistor R269, a freewheeling diode D19 and a resistor R272. The G pole of the fourth NMOS tube is sequentially connected to the resistor R269 and the resistor R272 and then connected to the PMU chip. The resistor R269 and the freewheeling diode D19 are connected in parallel, and the cathode of the freewheeling diode D19 is connected to the PMU chip.

[0009] Furthermore, an external voltage feedback circuit is connected between the output end of the PMU chip and the Type-C interface. The external voltage feedback circuit includes resistor R275, resistor R276 and resistor R277. The output end of the PMU chip is connected to resistor R275 in sequence, and then connected to the Type-C interface after resistor R276. One end of resistor R277 is connected to a common connection point of resistor R275 and resistor R276, and the other end is grounded.

[0010] Furthermore, the PMU chip is connected to a loop compensation circuit, which includes a resistor R278, a capacitor C248 and a capacitor C249. The PMU chip is connected to the resistor R278 and the capacitor C248 in sequence and then to ground. The resistor R278 and the capacitor C248 are connected in series and then connected in parallel with the capacitor C249.

[0011] Furthermore, the charging current limiting circuit includes a resistor R282 and a capacitor C250. The PMU chip is connected to the resistor R282 and then grounded. The resistor R282 and the capacitor C250 are connected in parallel. The power supply current limiting circuit includes a resistor R283 and a capacitor C251. The PMU chip is connected to the resistor R283 and then grounded. The resistor R283 and the capacitor C251 are connected in parallel.

[0012] Furthermore, the PMU chip is connected to a filtering circuit, which includes an inductor L13, a resistor R263 and a capacitor C229, wherein the SW1 pin and the SW2 pin of the PMU chip are respectively connected to two ends of the inductor L13, one end of the inductor L13 is connected to the resistor R263 and the capacitor C229 in sequence and then grounded, and the other end of the inductor L13 is connected to the resistor R264 and the capacitor C233 in sequence and then grounded.

[0013] Furthermore, the TYPE-C interface is connected to the SUB switching module through a transient suppression circuit.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are: the circuit of the present invention is relatively simple, cost-effective, and fully meets the charging and power supply requirements of Type-C peripherals. In particular, the voltage requirements of peripherals are identified through the CC pin of Type-C, and different voltages such as 5V, 9V, 12V, 15V, and 20V can be automatically output. At the same time, a series of protection functions such as input and output current limiting, bilateral output short-circuit protection, output overvoltage protection, and over-temperature protection can be adjusted to ensure the reliability of high-power charging and power supply, support high-power power transmission, support positive and negative symmetrical plugging and unplugging, and can both send and receive power. 65W high-power charging of peripherals can be performed through the Type-C interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a framework structure diagram of the present invention;

[0016] Figure 2 The circuit diagram of the PMU chip of the present invention;

[0017] Figure 3 is another circuit diagram of the present invention;

[0018] Figure 4 This is the pin connection diagram of the Type-C interface;

[0019] Figure 5 This is a pin connection diagram of the PD chip of the present invention;

[0020] Figure 6 The SUB switching module pin diagram of the present invention;

[0021] Figure 7 This is the pin diagram of the transient suppression diode of the present invention. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0023] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] The framework structure of the present invention is as follows Figure 1As shown, it includes a Scaler chip, a DC-DC circuit, a PMU chip, a SUB switching module, a Type-C interface, a PD chip, and an adapter connected to the PMU chip, wherein the Scaler chip is respectively connected to the PD chip, the Type-C interface, the SUB switching module, and the DC-DC circuit, the PD chip is respectively connected to the SUB switching module, the Type-C interface, and the PMU chip, the Type-C interface is respectively connected to the SUB switching module and the PMU chip, the PMU chip is connected to the DC-DC circuit, a first current sampling circuit is connected between the output end of the DC-DC circuit and the PMU chip, a second current sampling circuit is connected between the output end of the PMU chip and the Type-C interface, a charging current limiting circuit and a power supply current limiting circuit are connected to the PMU chip, a first buck-boost control circuit is connected between the output end of the DC-DC circuit and the PMU chip, a second buck-boost control circuit is connected between the output end of the PMU chip and the Type-C interface, and an external voltage feedback circuit is connected between the output end of the PMU chip and the Type-C interface. The first current sampling circuit and the second current sampling circuit include the same components and the same connection method, and are symmetrically arranged about the PMU chip. The first current sampling circuit includes a resistor R238, a resistor R267, a resistor R268, and a capacitor C235. The second current sampling circuit includes a resistor R241, a resistor R273, a resistor R274, and a capacitor C246. The connection relationship thereof is as follows: Figure 2As shown, when current flows through the input current sampling resistor of the first current sampling circuit and the output current sampling resistor of the second current sampling circuit, a voltage difference is generated at both ends, and the differential voltage feedback resistor feeds the generated differential voltage back to the PMU chip to obtain current information, and the filter capacitor is used to filter out differential noise. The charging current limiting circuit and the power supply current limiting circuit are connected to the 11th pin and the 12th pin of the PMU chip respectively. The PD chip is connected to the 2nd, 3rd, 4th, 5th, and 6th pins of the PMU chip. The 6th pin ITUNE of the PD chip is connected to the 12th pin ILIM2 current limiting circuit of the PD chip. The principle and process of the present invention are as follows: the first current sampling circuit and the second current sampling circuit detect the input and output current of the PMU chip, the charging current limiting circuit and the power supply current limiting circuit connected to the PMU chip limit the input and output current, the PMU chip is a four-tube synchronous buck-boost controller, the PMU chip is connected to the first and second buck-boost control circuits, and can support an ultra-wide input voltage range: 2.7V to 30V, an ultra-wide reverse output voltage range, the PMU chip is connected to the PD chip, the PD chip can control and adjust the current and voltage of the PMU chip, and after the external smart device is connected to the Type-C interface, the PD chip Detect the power supply capacity of the external smart device. When the power supply capacity of the external smart device is less than that of the connected device, send the judgment result to the Scaler chip. The Scaler chip enables the DC-DC circuit to charge the external device through the PMU chip and the Type-C interface. The PD chip dynamically adjusts the input and output current and voltage of the charging current limiting circuit and the power supply current limiting circuit of the PMU chip. The PD chip identifies the voltage requirements of the peripheral device through the CC pin of Type-C, and can automatically output different voltages such as 5V, 9V, 12V, 15V, and 20V. At the same time, the input and output current limiting can be adjusted to achieve the purpose of controlling power. The specific power depends on the device. Different devices have different powers provided by the present invention. For example, if the power of the mobile phone is very low, the mobile phone will enter fast charging. If the power is below 9V3A, 3*9=18W, this is determined by the mobile phone device. If the power of the notebook is very low, it will enter fast charging. If the power is below 20V3.25A, 20*3.25=65W, this is determined by the specifications of the notebook.

[0025] The DC-DC circuit is a current energy circuit that can convert a DC power supply into a different voltage value or a fixed voltage value. The model of the PD chip is LDR6282. The PD chip detects whether the adapter is connected through the PMU chip. The PD chip determines the power supply capacity of Type-C. The PD chip connects to the PMU chip to realize flexible adjustment of the charging current value and the power supply current value. It can automatically output different voltages such as 5V, 9V, 12V, 15V, and 20V through the CC pin of Type-C to identify the voltage requirements of peripherals. At the same time, it can adjust a series of protection functions such as input and output current limiting, bilateral output short-circuit protection, output overvoltage protection, and over-temperature protection to ensure the reliability of high-power charging and supply, support high-power power transmission, support positive and negative symmetrical plugging and unplugging, and can send and receive power. It can charge peripherals with 65w high power through the Type-C interface. The connection of the PMU chip circuit is as follows Figure 2 As shown, the PD chip circuit connection is as follows Figure 5 As shown, the PMU chip is connected to the PD chip. Specifically, the 8th pin PD_DIR of the PD chip is connected to the 2nd pin of the PMU chip, the 7th pin PD_IPWM of the PD chip is connected to the 5th pin of the PMU chip, the 6th pin PD_PWM of the PD chip is connected to the 3rd pin of the PMU chip, and the 23rd and 24th pins of the PD chip are respectively connected to the 3rd and 5th pins of the PMU chip. The 3pin of the PD chip is voltage regulation, and the voltage is adjusted by the PWM signal, which is controlled by the PD chip. The 5pin of the PD chip is current regulation, and the current is adjusted by the PWM signal, which is controlled by the PD chip. The SUB switching module communicates with the Type-C interface, such as Figure 4 and Figure 6 As shown, pin 8 of the Type-C interface is connected to pins 5 and 6 of the SUB switching module, pin 20 of the Type-C interface is connected to pins 4 and 7 of the SUB switching module, the PD chip is connected to the Type-C interface for communication, specifically, pin 18 of the PD chip is connected to the TYPEC0_VBUS terminal of the TYPE-C interface, pins 3 and 4 of the PD chip are respectively connected to the CC1 pin and CC2 pin of the TYPE-C interface, the SUB switching module is connected to the PD chip for communication, specifically, pin 9 of the PD chip is respectively connected to pin 10 of the SUB switching module, the SUB switching module is connected to the Scaler chip for communication, that is, pins 1 and 2 of the SUB switching module are respectively connected to the Scaler chip through DP2, and the PD chip is connected to the Scaler chip for communication, that is, pin 16 of the PD chip is connected to the Scaler chip through DP2.

[0026] Furthermore, in order to realize the step-up and step-down by the switch, the DC-DC circuit outputs a stable voltage to the PMU chip, the first step-up and step-down control circuit includes a first NMOS tube and a second NMOS tube, the second step-up and step-down control circuit includes a third NMOS tube and a fourth NMOS tube, the output end of the DC-DC circuit is connected to the drain D5, D6, D7, D8, D9 terminal of the first NMOS tube, the source S1, S2, S3 terminal of the first NMOS tube is connected to the drain D5, D6, D7, D8, D9 terminal of the second NMOS tube The G electrodes of the first NMOS tube and the second NMOS tube are connected to the PMU chip, the source electrode of the second NMOS tube is grounded, the TYPEC_VBUS terminal of the Type-C interface is connected to the drain electrodes D5, D6, D7, D8, and D9 of the third NMOS tube, the source electrodes S1, S2, and S3 of the third NMOS tube are connected to the drain electrodes D5, D6, D7, D8, and D9 of the fourth NMOS tube, the G electrodes of the third NMOS tube and the fourth NMOS tube are connected to the PMU chip, and the source electrode of the fourth NMOS tube is grounded. Figure 2 As shown, the first NMOS tube, the second NMOS tube, the third NMOS tube and the fourth NMOS tube are components Q19, Q21, Q23 and Q26 respectively, and the buck control circuit realizes buck-boost through switches, and the G poles of the first NMOS tube and the second NMOS tube are connected to pins 28 and 27 of the PMU chip respectively, and the G poles of the third NMOS tube and the fourth NMOS tube are connected to pins 21 and 22 of the PMU chip respectively.

[0027] Furthermore, it also includes a freewheeling circuit, which includes a first freewheeling circuit, a second freewheeling circuit, a third freewheeling circuit and a fourth freewheeling circuit. The first freewheeling circuit includes a resistor R260, a freewheeling diode D15 and a resistor R266. The G pole of the first NMOS tube is connected to the resistor R260 and the resistor R266 in sequence and then connected to the PMU chip. The resistor R260 and the freewheeling diode D15 are connected in parallel, and the negative pole of the freewheeling diode D15 is connected to the PMU chip; the second freewheeling circuit includes a resistor R262, a freewheeling diode D17 and a resistor R262. The G pole of the second NMOS tube is connected to the resistor R262 and the resistor R265 in sequence and then connected to the PMU chip. The resistor R262 and the freewheeling diode D17 The third freewheeling circuit includes resistor R270, freewheeling diode D20 and resistor R271. The G pole of the third NMOS tube is sequentially connected to resistor R270 and resistor R271 and then connected to the PMU chip. The resistor R270 and freewheeling diode D20 are connected in parallel, and the negative pole of the freewheeling diode D20 is connected to the PMU chip. The fourth freewheeling circuit includes resistor R269, freewheeling diode D19 and resistor R272. The G pole of the fourth NMOS tube is sequentially connected to resistor R269 and resistor R272 and then connected to the PMU chip. The resistor R269 and freewheeling diode D19 are connected in parallel, and the negative pole of the freewheeling diode D19 is connected to the PMU chip. The connection relationship of the freewheeling circuit is as follows: Figure 2 shown.

[0028] Furthermore, to ensure the reliability of high-power charging and power supply and feedback the external voltage, an external voltage feedback circuit is connected between the output end of the PMU chip and the Type-C interface. The external voltage feedback circuit includes resistor R275, resistor R276 and resistor R277. The output end of the PMU chip is connected to resistor R275 in sequence, and then connected to the Type-C interface after resistor R276. One end of resistor R277 is connected to the common connection point of resistor R275 and resistor R276, and the other end is grounded.

[0029] Further, to ensure the reliability of high-power charging and power supply, the PMU chip is connected to a loop compensation circuit, which includes a resistor R278, a capacitor C248 and a capacitor C249. The PMU chip is connected to the resistor R278 and the capacitor C248 in sequence and then to ground. The resistor R278 and the capacitor C248 are connected in series and then connected in parallel with the capacitor C249.

[0030] Furthermore, the charging current limiting circuit includes a resistor R282 and a capacitor C250. The PMU chip is connected to the resistor R282 and then grounded. The resistor R282 and the capacitor C250 are connected in parallel. The power supply current limiting circuit includes a resistor R283 and a capacitor C251. The PMU chip is connected to the resistor R283 and then grounded. The resistor R283 and the capacitor C251 are connected in parallel.

[0031] Further, the PMU chip is connected to a filter circuit, which includes an inductor L13, a resistor R263 and a capacitor C229, wherein the SW1 pin and the SW2 pin of the PMU chip are respectively connected to the two ends of the inductor L13, one end of the inductor L13 is sequentially connected to the resistor R263 and the capacitor C229 and then grounded, and the other end of the inductor L13 is sequentially connected to the resistor R264 and the capacitor C233 and then grounded. The SW1 pin and the SW2 pin of the PMU chip are respectively connected to the two ends of the inductor L13, one end of the inductor L13 is sequentially connected to the resistor R263 and the capacitor C229 and then grounded, and the other end of the inductor L13 is sequentially connected to the resistor R264 and the capacitor C233 and then grounded. To ensure the stability of the PMU chip loop, the inductor value is between 2.2uH and 10uH. This solution uses 10uH. Two RC absorption circuits adjust the peak value of SWx, filter, and reduce EMI.

[0032] Further, the charging current limiting circuit includes a resistor R282 and a capacitor C250, the PMU chip is connected to the resistor R282 and then grounded, the resistor R282 and the capacitor C250 are connected in parallel, and the power supply current limiting circuit includes a resistor R283 and a capacitor C251, the PMU chip is connected to the resistor R283 and then grounded, and the resistor R283 and the capacitor C251 are connected in parallel. In this embodiment, the PMU chip model is SC8701 or SC8703 or SC8802. The reference voltage of the PMU chip is 1.21V, the resistor R282 is 12.1K, the capacitor C250 is 10nF, the resistor R283 is 40.2K, the capacitor C251 is 10nF, the chip 1PIN is an enable control, the low level is effective, if the high level chip stops working, it is controlled by the PD chip. The PMU chip 2PIN is set for the charging and power supply mode. When the level is low, the system charges the peripherals, and when the level is high, the external power is supplied to the system. The charging and power supply is determined by the CC pin of TYPE C. The 3PIN of the PMU chip is for voltage regulation. The voltage is adjusted by the PWM signal and is controlled by the PD chip. The 5PIN of the PMU chip is for current regulation. The voltage is adjusted by the PWM signal and is controlled by the PD chip. The 11PIN of the PMU chip is for the charging current limit value, and the 12PIN of the PMU chip is for the power supply current limit value, which can be calculated by the relevant formula. The current limit value of the charging current limit circuit LIMI1 = (1.21V / 12.2K)*(1K / 0.01R) = 10A, and the current limit value of the power supply current limit circuit LIMI2 = (1.21V / 40.2K)*(1K / 0.01R) = 3A.

[0033] Furthermore, a loop compensation circuit is also included, including a resistor R278, a capacitor C248 and a capacitor C249. The COMP pin of the PMU chip is connected to the resistor R278 and the capacitor C248 in sequence and then grounded. The resistor R278 and the capacitor C248 are connected in series and then connected in parallel with the capacitor C249. The loop compensation circuit plays a role in adjusting the control voltage, and adjusts the output voltage by controlling the duty cycle of the pulse voltage through loop feedback. It plays a protective role. Once the output current is too large, the current can be limited or the voltage output can be cut off through loop feedback control.

[0034] Furthermore, an external voltage feedback circuit is included. The external voltage feedback circuit is between the FB pin of the PMU chip and the Type-C interface. The external voltage feedback circuit includes resistor R275, resistor R276 and resistor R277. The PMU chip is connected to resistor R275 and resistor R276 in sequence, and then connected to the Type-C interface. One end of resistor R277 is connected to a common connection point of resistor R275 and resistor R276, and the other end is grounded.

[0035] Furthermore, the TYPE-C interface is connected to the SUB switching module through a transient suppression circuit. Figure 4 and Figure 7 As shown, the transient suppression circuit includes a transient suppression diode U14, model AZ1045-04F, and the CC1 and CC2 pins of the Type-C interface are connected to the 5th and 4th pins of U14 respectively. The pin connection is not described in detail. The transient suppression protection circuit is used to protect USB signals, prevent interference, and provide reliable signals.

[0036] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, and the working principle of the present invention has been explained, but the present invention is not limited thereto. Various changes made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention are all within the protection scope of the present invention.

Claims

1. A bidirectional high-power charging and supply system with Type-C, characterized in that: include: Scaler chip, DC-DC circuit, PMU chip, SUB switching module, Type-C interface, PD chip, and adapter connected to PMU chip, wherein the Scaler chip is respectively connected to the PD chip, Type-C interface, SUB switching module and DC-DC circuit, the PD chip is respectively connected to the SUB switching module, Type-C interface and PMU chip, the Type-C interface is respectively connected to the SUB switching module and PMU chip, the PMU chip is connected to the DC-DC circuit, a first current sampling circuit is connected between the output end of the DC-DC circuit and the PMU chip, a second current sampling circuit is connected between the output end of the PMU chip and the Type-C interface, a charging current limiting circuit and a power supply current limiting circuit are connected to the PMU chip, a first buck-boost control circuit is connected between the output end of the DC-DC circuit and the PMU chip, a second buck-boost control circuit is connected between the output end of the PMU chip and the Type-C interface, and an external voltage feedback circuit is connected between the output end of the PMU chip and the Type-C interface; The first buck-boost control circuit includes a first NMOS tube and a second NMOS tube, the second buck-boost control circuit includes a third NMOS tube and a fourth NMOS tube, the output end of the DC-DC circuit is connected to the drain D5, D6, D7, D8, and D9 terminals of the first NMOS tube, the source S1, S2, and S3 terminals of the first NMOS tube are connected to the drain D5, D6, D7, D8, and D9 terminals of the second NMOS tube, the G poles of the first NMOS tube and the second NMOS tube are connected to the PMU chip, the source of the second NMOS tube is grounded, the TYPEC_VBUS terminal of the Type-C interface is connected to the drain D5, D6, D7, D8, and D9 terminals of the third NMOS tube, the source S1, S2, and S3 terminals of the third NMOS tube are connected to the drain D5, D6, D7, D8, and D9 terminals of the fourth NMOS tube, the G poles of the third NMOS tube and the fourth NMOS tube are connected to the PMU chip, and the source of the fourth NMOS tube is grounded; It also includes a freewheeling circuit, which includes a first freewheeling circuit, a second freewheeling circuit, a third freewheeling circuit and a fourth freewheeling circuit. The first freewheeling circuit includes a resistor R260, a freewheeling diode D15 and a resistor R266. The G pole of the first NMOS tube is connected to the resistor R260 and the resistor R266 in sequence and then connected to the PMU chip. The resistor R260 and the freewheeling diode D15 are connected in parallel, and the negative pole of the freewheeling diode D15 is connected to the PMU chip. The second freewheeling circuit includes a resistor R262, a freewheeling diode D17 and a resistor R262. The G pole of the second NMOS tube is connected to the resistor R262 and the resistor R265 in sequence and then connected to the PMU chip. The resistor R262 and the freewheeling diode D17 are connected in parallel. The cathode of the freewheeling diode D17 is connected to the PMU chip; the third freewheeling circuit includes a resistor R270, a freewheeling diode D20 and a resistor R271, the G pole of the third NMOS tube is sequentially connected to the resistor R270 and the resistor R271 and then connected to the PMU chip, the resistor R270 and the freewheeling diode D20 are connected in parallel, and the cathode of the freewheeling diode D20 is connected to the PMU chip; the fourth freewheeling circuit includes a resistor R269, a freewheeling diode D19 and a resistor R272, the G pole of the fourth NMOS tube is sequentially connected to the resistor R269 and the resistor R272 and then connected to the PMU chip, the resistor R269 and the freewheeling diode D19 are connected in parallel, and the cathode of the freewheeling diode D19 is connected to the PMU chip; An external voltage feedback circuit is connected between the output end of the PMU chip and the Type-C interface. The external voltage feedback circuit includes resistors R275, R276, and R277. The output end of the PMU chip is sequentially connected to resistor R275, and then connected to the Type-C interface after resistor R276. One end of resistor R277 is connected to a common connection point of resistors R275 and R276, and the other end is grounded.

2. The bidirectional high-power charging and supplying system with Type-C according to claim 1, characterized in that: The PMU chip is connected to a loop compensation circuit, which includes a resistor R278, a capacitor C248 and a capacitor C249. The PMU chip is connected to the resistor R278 and the capacitor C248 in sequence and then grounded. The resistor R278 and the capacitor C248 are connected in series and then connected in parallel with the capacitor C249.

3. The bidirectional high-power charging and supplying system with Type-C according to claim 1, characterized in that: The charging current limiting circuit includes a resistor R282 and a capacitor C250. The PMU chip is connected to the resistor R282 and then grounded. The resistor R282 and the capacitor C250 are connected in parallel. The power supply current limiting circuit includes a resistor R283 and a capacitor C251. The PMU chip is connected to the resistor R283 and then grounded. The resistor R283 and the capacitor C251 are connected in parallel.

4. The bidirectional high-power charging and supplying system with Type-C according to claim 1, characterized in that: The PMU chip is connected to a filter circuit, which includes an inductor L13, a resistor R263 and a capacitor C229. The resistor R263 and the capacitor C229, wherein the SW1 pin and the SW2 pin of the PMU chip are respectively connected to two ends of the inductor L13, one end of the inductor L13 is connected in sequence to the resistor R263 and the capacitor C229 and then grounded, and the other end of the inductor L13 is connected in sequence to the resistor R264 and the capacitor C233 and then grounded.

5. The bidirectional high-power charging and supplying system with Type-C according to claim 1, characterized in that: The TYPE-C interface is connected to the SUB switching module through a transient suppression circuit.

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