Type-C interface short-circuit protection circuit and electronic equipment

Abstract

The invention discloses a Type-C interface short-circuit protection circuit and electronic equipment, the Type-C interface short-circuit protection circuit is connected between a main control end and an interface end, the main control end is connected with the interface end through a Type-C line, and the Type-C interface short-circuit protection circuit comprises an isolation module which is connected to a high-speed signal channel of the Type-C line and is connected with the high-speed signal channel of the Type-C line; the isolation module is used for isolating direct current which is injected into a high-speed signal channel from a power signal channel of a Type-C line; and the discharging module is connected to the high-speed signal channel of the Type-C line and is used for releasing the voltage on the high-speed signal channel when the interface end has no input. The circuit can solve the problem that in the Type-C plugging process, short circuit of adjacent pins possibly causes that VBUS power signals are poured into a USB high-speed signal channel, and master control overvoltage damage is caused, the use safety of a user Type-C interface is improved, and the design cost is low.

Description

TECHNICAL FIELD

[0001] The embodiment of the application relates to the technical field of Type-C, in particular to a Type-C interface short circuit protection circuit and electronic equipment. BACKGROUND

[0002] At present, the Type-C interface is rapidly becoming the core standard for electronic device connection, and its importance is increasingly prominent. With the development of technology, Type-C not only solves the convenience problem of traditional USB interface "positive and negative insertion", but also integrates high-speed data transmission, fast charging and video output and other functions. From smartphones, notebook computers to tablets and peripheral devices, the popularity of Type-C promotes the unification of device interfaces and reduces the burden of users carrying multiple cables. At the same time, Type-C is compatible with USB4, thunderbolt protocol and other advanced standards, laying a foundation for future high-speed interconnection and expansion applications.

[0003] With the continuous increase of the highest power supported by Type-C interface and the continuous increase of the supported voltage, the highest power can now reach 48V, and the safety problem caused by charging is also common, and its safety is also more and more paid attention to by people. One of the important reasons for causing device damage or fire safety problems is that the pin pitch of the Type-C interface connector is very small (the pitch is only 0.5mm), plus high voltage, which is easy to cause short circuit in the process of device plugging. At present, in order to solve the short circuit problem caused by Type-C plugging, an IC compatible with high-speed signals and high-voltage power supply is added to realize it, and the price of such IC is relatively expensive, the cost is high, and some manufacturers even do not add protection scheme in order to save cost, resulting in short life of the device, and even causing safety hazards. SUMMARY

[0004] The application provides a Type-C interface short circuit protection circuit, which aims to solve the problem of short circuit caused by PIN short circuit in the process of Type-C device plugging.

[0005] In a first aspect, the embodiment of the application provides a Type-C interface short circuit protection circuit connected between a master control end and an interface end, wherein the master control end and the interface end are connected through a Type-C line, and the Type-C interface short circuit protection circuit comprises: an isolation module connected to a high-speed signal channel of the Type-C line, used for isolating direct current poured from a power signal channel of the Type-C line to the high-speed signal channel; and a discharge module connected to the high-speed signal channel of the Type-C line, used for releasing the voltage on the high-speed signal channel when there is no input in the interface end.

[0006] Further, the Type-C interface short circuit protection circuit further comprises an ESD module connected to the high-speed signal channel between the master control end and the isolation module.

[0007] Further, the Type-C interface short circuit protection circuit further comprises an EMI module connected to the high-speed signal channel between the master control end and the isolation module.

[0008] Further, the isolation module comprises a first isolation unit and a second isolation unit, and the high-speed signal channel comprises a first high-speed signal channel and a second high-speed signal channel, the first isolation unit is connected to the first high-speed signal channel, and the second isolation unit is connected to the second high-speed signal channel.

[0009] Further, the first isolation unit comprises at least one first capacitor and at least one second capacitor, and the first high-speed signal channel comprises a first TX channel and a second TX channel, the first capacitor is connected in series to the first TX channel, and the second capacitor is connected in series to the second TX channel.

[0010] Further, the second isolation unit comprises at least one third capacitor and at least one fourth capacitor, and the second high-speed signal channel comprises a first RX channel and a second RX channel, the third capacitor is connected in series to the first RX channel, and the fourth capacitor is connected in series to the second RX channel.

[0011] Further, the discharge module comprises a first discharge unit and a second discharge unit, and the high-speed signal channel comprises a first high-speed signal channel and a second high-speed signal channel, the first discharge unit is connected to the first high-speed signal channel, and the second discharge unit is connected to the second high-speed signal channel.

[0012] Further, the first discharge unit comprises at least one first resistor and at least one second resistor, and the first high-speed signal channel comprises a first TX channel and a second TX channel, the first resistor is connected in series between the first TX channel and the ground, and the second resistor is connected in series between the second TX channel and the ground.

[0013] Further, the second discharge unit comprises at least one third resistor and at least one fourth resistor, and the second high-speed signal channel comprises a first RX channel and a second RX channel, the third resistor is connected in series between the first RX channel and the ground, and the fourth resistor is connected in series between the second RX channel and the ground.

[0014] In a second aspect, the present application further provides an electronic device comprising the Type-C interface short circuit protection circuit of the first aspect.

[0015] The application provides a Type-C interface short circuit protection circuit and electronic equipment. The Type-C interface short circuit protection circuit is connected between a host control end and an interface end, the host control end and the interface end are connected through a Type-C line, and the Type-C interface short circuit protection circuit comprises: an isolation module connected to a high-speed signal channel of the Type-C line and used for isolating direct current poured from a power signal channel of the Type-C line onto the high-speed signal channel; and a discharge module connected to the high-speed signal channel of the Type-C line and used for discharging voltage on the high-speed signal channel when there is no input at the interface end. The circuit of the application can solve the problem that, during Type-C plugging, adjacent pin short circuit may cause VBUS power signal to pour onto the USB high-speed signal channel, leading to host overvoltage damage, without integrating high-cost protection IC, improve the safety of Type-C interface use of users, ensure the integrity of signals, and reduce design cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 A structural block diagram of the Type-C interface short circuit protection circuit provided by the embodiment of the present application is provided. Figure 2 Another structural block diagram of the Type-C interface short circuit protection circuit provided by the embodiment of the present application is provided. Figure 3 Still another structural block diagram of the Type-C interface short circuit protection circuit provided by the embodiment of the present application is provided. Figure 4 A circuit diagram of the Type-C interface short circuit protection circuit provided by the embodiment of the present application is provided. Figure 5 A Type-C interface pin distribution schematic diagram is provided.

[0018] Reference signs: 1, host control end; 2, interface end; 3, first TX channel; 4, second TX channel; 5, first RX channel; 6, second RX channel; 10, isolation module; 11, first isolation unit; 12, second isolation unit; 20, discharge module; 21, first discharge unit; 22, second discharge unit; 30, ESD module; 40, EMI module. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of the present application.

[0020] The directional terms mentioned in the present application, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", and the like, are only the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present application, and are not used to limit the present application. In addition, in the drawings, structures similar or identical in structure are denoted by the same reference numerals.

[0021] In order to facilitate the understanding of the present application, first refer to Figure 5 As shown in Figure 5 The pin distribution diagram of the Type-C interface is as shown in Figure 5 As shown in the figure, the VBUS signal pin (A4 / B4 / A9 / B9) of the Type-C interface is adjacent to the USB3 high-speed signal pin (A2 / A3 / B2 / B3 / A10 / A11 / B10 / B11) and the CC signal pin (A5 / B5) and the SBU signal pin (A8 / B8) in the Type-C interface, wherein the VBUS signal pin is a power pin, and the voltage can be as high as 48V. In the process of hot plugging of the Type-C device, the adjacent signal pins can be short-circuited, and the high voltage can be poured into the adjacent pin, which can cause smoking and fire, and can also cause damage to external devices and host devices. Figure 5 Figure 5 Figure 5 Therefore, the embodiment of the present application provides a Type-C interface short circuit protection circuit, which can be referred to The Type-C interface short circuit protection circuit is connected between the host end 1 and the interface end 2. The host end 1 can be a PC mainboard, and the interface end 2 is mainly a Type-C interface. The host end 1 and the interface end 2 are connected through a Type-C line. Specifically, the Type-C line has a plurality of different types of signal channels, and the host end 1 and the interface end 2 are connected through these signal channels. The signal channels of the Type-C line can include a power signal channel, a high-speed signal channel and the like. The power signal channel corresponds to the VBUS signal pin (A4 / B4 / A9 / B9) of the Type-C interface, and the high-speed signal channel corresponds to the USB3 high-speed signal pin (A2 / A3 / B2 / B3 / A10 / A11 / B10 / B11) of the Type-C interface.

[0022] Figures 1 to 5 Figure 5 Figure 5 ​​​​The high-speed signal channel can include a TX (data transmission) channel, an RX (data reception) channel, etc. Figure 1 As shown in the figure, the Type-C interface short-circuit protection circuit includes an isolation module 10 and a discharge module 20. The isolation module 10 is connected to the high-speed signal channel of the Type-C line, and the high-speed signal channel corresponds to A2 / A3 / B2 / B3 / A10 / A11 / B10 / B11. Figure 5 As shown in the figure, the Type-C interface short-circuit protection circuit includes an isolation module 10 and a discharge module 20. The isolation module 10 is connected to the high-speed signal channel of the Type-C line, and the high-speed signal channel corresponds to A2 / A3 / B2 / B3 / A10 / A11 / B10 / B11. Figure 5 The isolation module 10 is used to isolate the direct current flowing into the high-speed signal channel from the power signal channel of the Type-C line. The isolation module 10 can be designed with components that block direct current, such as capacitors, etc. The discharge module 20 is connected to the high-speed signal channel of the Type-C line. The discharge module 20 is used to discharge the voltage on the high-speed signal channel when there is no input at the interface end 2. The discharge module 20 can be designed with components that quickly consume power, such as high-resistance resistors, etc.

[0023] In actual application, when the Type-C device is inserted, pulled out, or shaken at the interface end 2, short circuit may occur at the adjacent pin of the Type-C interface of the interface end 2. When the Type-C device is inserted or pulled out, the power signal channel of the Type-C line is short-circuited with the high-speed signal channel. The direct current transmitted on the power signal channel flows into the high-speed signal channel of the Type-C line. Due to the isolation of the isolation module 10 connected to the high-speed signal channel, the flowing direct current is blocked when it reaches the isolation module 10, so that the direct current power signal cannot enter the host end 1, avoiding the problem of overvoltage damage to the device or component of the host end 1, thereby protecting the safety of the host end 1. In addition, when the user pulls out the Type-C device from the interface end 2, the discharge module 20 discharges the remaining voltage on the high-speed signal channel due to no input at the interface end 2, thereby improving the signal integrity.

[0024] In an embodiment, referring to Figures 2 to 4The Type-C interface short-circuit protection circuit also includes an ESD module 30, which is connected to the high-speed signal channel between the main control terminal 1 and the isolation module 10. In specific implementations, the ESD module 30 is used to suppress ESD (Electro-Static Discharge) during high-speed data transmission, improving data transmission stability. By connecting the ESD module 30 to the high-speed signal channel between the main control terminal 1 and the isolation module 10, with the ESD module located at the rear of the isolation module 10 and closer to the main control terminal 1, even if a short circuit occurs at the interface terminal 2, the power signal VBUS will not cause overvoltage damage to the ESD module 30 due to the isolation protection provided by the isolation module 10, resulting in higher safety.

[0025] In one embodiment, reference is made to Figure 2 and Figure 4 The Type-C interface short-circuit protection circuit also includes an EMI module 40, which is connected to the high-speed signal channel between the main control terminal 1 and the isolation module 10. In specific implementations, the EMI module 40 is used to suppress electromagnetic interference (EMI) on the high-speed signal channel, thereby improving EMC performance. Figure 4 As shown, the EMI module 40 can be composed of common-mode inductors L1 and L2 and resistors R1 to R4. Common-mode inductors L1 and L2 are connected in series in the high-speed signal channel between the main control terminal 1 and the isolation module 10. Each of the resistors R1 to R4 is connected in parallel across each coil of the common-mode inductors L1 and L2. In the specific design, the common-mode inductors L1 and L2 and the resistors R1 to R4 are designed with a common layout on the PCB. The common-mode inductors L1 and L2, along with the resistors R1 to R4, work together to transmit high-speed signals and achieve EMI suppression. Specifically, when EMI interference leaks out during high-speed signal transmission in the channel, the common-mode inductors L1 and L2 suppress EMI, and the branch containing the common-mode inductors L1 and L2 serves as the path for high-speed signal transmission. When there is no EMI interference leakage, the branch containing the resistors R1 to R4 serves as the path for high-speed signal transmission. Since the EMI module 40 is connected to the rear end of the isolation module 10 and is located close to the main control terminal 1, the EMI module 40 will not be damaged even if a short circuit occurs at the interface terminal 2, because the isolation module 10 is in front for isolation and protection.

[0026] In one embodiment, reference is made to Figure 3 and Figure 4 The isolation module 10 includes a first isolation unit 11 and a second isolation unit 12. The high-speed signal channel includes a first high-speed signal channel and a second high-speed signal channel. The first isolation unit 11 is connected to the first high-speed signal channel, and the second isolation unit 12 is connected to the second high-speed signal channel. Specifically, the first high-speed signal corresponds to... Figure 5The TX channel in USB3 high-speed signals ( Figure 5 (A2 / A3 / B2 / B3), the second high-speed signal channel can correspond to Figure 5 The RX channel of the USB3 high-speed signal ( Figure 5 The first isolation unit 11 (A10 / A11 / B10 / B11) is connected to the first high-speed signal between the main control terminal 1 and the interface terminal 2. It can isolate the DC current injected into the first high-speed signal channel from the interface terminal 2 and form isolation protection on the first high-speed signal channel. The second isolation unit 12 is connected to the second high-speed signal channel between the main control terminal 1 and the interface terminal 2. It can isolate the DC current injected into the second high-speed signal channel from the interface terminal 2 and form isolation protection on the second high-speed signal channel.

[0027] Furthermore, referring to Figure 4 The first isolation unit 11 includes at least one first capacitor C1 and at least one second capacitor C2. The first high-speed signal channel includes a first TX channel 3 and a second TX channel 4. The first capacitor C1 is connected in series with the first TX channel 3, and the second capacitor C2 is connected in series with the second TX channel 4. Specifically, the first TX channel 3 and the second TX channel 4 are signal transmission channels with two different polarities. The first TX channel 3 transmits a positive TX signal, and the first TX channel 3 can correspond to... Figure 5 TX1+ and TX2+ in USB3 high-speed signals Figure 5 (A2 / B2). The second TX channel 4 transmits the negative TX signal, and the second TX channel 4 can correspond to... Figure 5 TX1- and TX2- in the USB3 high-speed signal Figure 5 (A3 / B3). Each channel corresponds to a capacitor connected in series, and multiple capacitors can also be connected in series. The capacitor does not affect the transmission of high-speed signals. The DC blocking function of the capacitor can block the power signal injected from the interface terminal 2 due to a short circuit in the pin, thus forming protection. For example, when the TX1- ( Figure 5 (A3) and VBUS ( Figure 5 When A4 is short-circuited, the high voltage on VBUS will flow to the signal USB3_TX0_C_DN. At this time, due to the DC blocking effect of the second capacitor C2, it will not cause damage to the subsequent main control and other devices.

[0028] Furthermore, referring to Figure 4The second isolation unit 12 includes at least one third capacitor C3 and at least one fourth capacitor C4. The second high-speed signal channel includes a first RX channel 5 and a second RX channel 6. The third capacitor C3 is connected in series with the first RX channel 5, and the fourth capacitor C4 is connected in series with the second RX channel 6. Specifically, the first RX channel 5 and the second RX channel 6 are signal receiving channels with two different polarities. The first RX channel 5 transmits a positive RX signal, and the first RX channel 5 can correspond to... Figure 5 RX1+ and RX2+ in USB3 high-speed signals Figure 5 (A11 / B11). The second RX channel 6 transmits the RX negative polarity signal, and the second RX channel 6 can correspond to... Figure 5 In the USB3 high-speed signal, RX1- and RX2- are... Figure 5 (A10 / B10). In this embodiment, each channel corresponds to one capacitor connected in series. In other embodiments, each channel may correspond to multiple capacitors connected in series. The capacitance value of the series capacitors is specifically designed according to the parameters of the high-speed signal, so that the capacitors do not affect the normal transmission of the high-speed signal. The DC blocking function of the capacitors can block the power signal injected from interface 2 due to pin short circuit, thereby forming protection. For example, when the RX1- ( Figure 5 B10 and VBUS Figure 5 When B9 is short-circuited, the high voltage on VBUS will flow to the signal USB3_RX0_C_DN. At this time, due to the DC blocking effect of the fourth capacitor C4, it will not cause damage to the subsequent main control and other devices.

[0029] In one embodiment, reference is made to Figure 3 and Figure 4 The discharge module 20 includes a first discharge unit 21 and a second discharge unit 22. The high-speed signal channel includes a first high-speed signal channel and a second high-speed signal channel. The first discharge unit 21 is connected to the first high-speed signal channel, and the second discharge unit 22 is connected to the second high-speed signal channel. Specifically, the first high-speed signal corresponds to... Figure 5 The TX channel in USB3 high-speed signals ( Figure 5 (A2 / A3 / B2 / B3), the second high-speed signal channel can correspond to Figure 5 The RX channel of the USB3 high-speed signal ( Figure 5The first discharge unit 21 (A10 / A11 / B10 / B11) is connected to the first high-speed signal channel between the main control terminal 1 and the interface terminal 2. When the user unplugs the Type-C device, the first discharge unit 21 can release the voltage on the first high-speed signal channel. The second discharge unit 22 is connected to the second high-speed signal channel between the main control terminal 1 and the interface terminal 2. When the user unplugs the Type-C device, the second discharge unit 22 can release the voltage on the second high-speed signal channel.

[0030] Furthermore, referring to Figure 4 The first discharge unit 21 includes at least one first resistor R5 and at least one second resistor R6. The first high-speed signal channel includes a first TX channel 3 and a second TX channel 4. The first resistor R5 is connected in series between the first TX channel 3 and ground, and the second resistor R6 is connected in series between the second TX channel 4 and ground. Specifically, the first TX channel 3 and the second TX channel 4 are signal transmission channels with two different polarities. The first TX channel 3 transmits a positive TX signal, and the first TX channel 3 can correspond to... Figure 5 TX1+ and TX2+ in USB3 high-speed signals Figure 5 (A2 / B2). The second TX channel 4 transmits the negative TX signal, and the second TX channel 4 can correspond to... Figure 1 TX1- and TX2- in the USB3 high-speed signal Figure 5 (A3 / B3). Each channel is connected to ground in series with a resistor, or multiple resistors can be connected in series to pull the signal down to ground. When the user unplugs the Type-C device, the first resistor R5 and the second resistor R6 can quickly dissipate power, releasing the voltage on the first TX channel 3 and the second TX channel 4, ensuring signal integrity.

[0031] Furthermore, referring to Figure 4 The second discharge unit 22 includes at least one third resistor R7 and at least one fourth resistor R8. The second high-speed signal channel includes a first RX channel 5 and a second RX channel 6. The third resistor R7 is connected in series between the first RX channel 5 and ground, and the fourth resistor R8 is connected in series between the second RX channel 6 and ground. Specifically, the first RX channel 5 and the second RX channel 6 are signal receiving channels with two different polarities. The first RX channel 5 transmits a positive RX signal, and the first RX channel 5 can correspond to... Figure 5 RX1+ and RX2+ in USB3 high-speed signals Figure 5 (A11 / B11). The second RX channel 6 transmits the RX negative polarity signal, and the second RX channel 6 can correspond to... Figure 5 In the USB3 high-speed signal, RX1- and RX2- are... Figure 5(A10 / B10). Each channel is connected to ground in series with a resistor, or multiple resistors can be connected in series to pull the signal down to ground. When the user unplugs the Type-C device, the third resistor R7 and the fourth resistor R8 can quickly dissipate power, releasing the voltage on the first RX channel 5 and the second RX channel 6, ensuring signal integrity.

[0032] In summary, the circuit of this application can solve the problem of overvoltage damage to the main controller caused by the VBUS power signal flowing into the USB high-speed signal channel due to short circuits between adjacent pins during Type-C insertion and removal without integrating a high-cost protection IC. This improves the safety of users' Type-C interface use while ensuring signal integrity and reducing design costs.

[0033] This invention also provides an electronic device, which includes the Type-C interface short-circuit protection circuit described in the above embodiments, and has a main control unit and a Type-C interface. The Type-C interface short-circuit protection circuit can be disposed between the main control unit and the Type-C interface to provide Type-C insertion and removal protection, preventing short circuits during the insertion and removal of Type-C devices and protecting the safety of the device. The electronic device can be a mobile phone, laptop computer, or other similar device, and is not limited thereto. Since the specific structure and working principle of the Type-C interface short-circuit protection circuit have been described in detail in the preceding description, they will not be repeated here for the sake of brevity.

[0034] The electronic device of this application, by employing the Type-C interface short-circuit protection circuit described in the above embodiments, can avoid short circuits during the insertion and removal of Type-C devices, resulting in higher device safety and better reliability.

[0035] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A Type-C interface short-circuit protection circuit, connected between a main control terminal and an interface terminal, wherein the main control terminal and the interface terminal are connected via a Type-C line, characterized in that, The Type-C interface short-circuit protection circuit includes: An isolation module, connected to the high-speed signal channel of the Type-C line, is used to isolate the DC current flowing into the high-speed signal channel from the power signal channel of the Type-C line; The discharge module is connected to the high-speed signal channel of the Type-C line and is used to release the voltage on the high-speed signal channel when there is no input at the interface.

2. The Type-C interface short-circuit protection circuit according to claim 1, characterized in that, The Type-C interface short-circuit protection circuit also includes an ESD module, which is connected to the high-speed signal channel between the main control terminal and the isolation module.

3. The Type-C interface short-circuit protection circuit according to claim 1, characterized in that, The Type-C interface short-circuit protection circuit also includes an EMI module, which is connected to the high-speed signal channel between the main control terminal and the isolation module.

4. The Type-C interface short-circuit protection circuit according to any one of claims 1-3, characterized in that, The isolation module includes a first isolation unit and a second isolation unit, and the high-speed signal channel includes a first high-speed signal channel and a second high-speed signal channel. The first isolation unit is connected to the first high-speed signal channel, and the second isolation unit is connected to the second high-speed signal channel.

5. The Type-C interface short-circuit protection circuit according to claim 4, characterized in that, The first isolation unit includes at least one first capacitor and at least one second capacitor. The first high-speed signal channel includes a first TX channel and a second TX channel. The first capacitor is connected in series with the first TX channel, and the second capacitor is connected in series with the second TX channel.

6. The Type-C interface short-circuit protection circuit according to claim 4, characterized in that, The second isolation unit includes at least one third capacitor and at least one fourth capacitor. The second high-speed signal channel includes a first RX channel and a second RX channel. The third capacitor is connected in series with the first RX channel, and the fourth capacitor is connected in series with the second RX channel.

7. The Type-C interface short-circuit protection circuit according to any one of claims 1-3, characterized in that, The discharge module includes a first discharge unit and a second discharge unit, and the high-speed signal channel includes a first high-speed signal channel and a second high-speed signal channel. The first discharge unit is connected to the first high-speed signal channel, and the second discharge unit is connected to the second high-speed signal channel.

8. The Type-C interface short-circuit protection circuit according to claim 7, characterized in that, The first discharge unit includes at least one first resistor and at least one second resistor. The first high-speed signal channel includes a first TX channel and a second TX channel. The first resistor is connected in series between the first TX channel and ground, and the second resistor is connected in series between the second TX channel and ground.

9. The Type-C interface short-circuit protection circuit according to claim 7, characterized in that, The second discharge unit includes at least one third resistor and at least one fourth resistor. The second high-speed signal channel includes a first RX channel and a second RX channel. The third resistor is connected in series between the first RX channel and ground, and the fourth resistor is connected in series between the second RX channel and ground.

10. An electronic device, characterized in that, Includes the Type-C interface short-circuit protection circuit as described in any one of claims 1-9.

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