Isolated gate driver and electronic device
By setting up a detection module and a pull-down module in the output side circuit of the isolated gate driver, the fault detection function is realized without adding pins, and the problem of incompatibility of existing isolated drivers is solved, which has the advantage of cost-effectiveness.
Patent Information
- Application Number
- CN202411784687.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-03-28
AI Technical Summary
Existing isolated drives cannot implement fault detection without adding pins and cannot be compatible with existing isolated drives.
An isolated gate driver is designed. By setting a detection module and a pull-down module in the output side circuit, the detection module outputs a fault signal when a fault is detected. The pull-down module pulls down the potential of the gate driving module when a fault signal is received to generate an error report signal.
It realizes the fault detection function without adding driver pins, and is compatible with existing isolated drivers, with the advantages of low cost and high reliability.
Smart Images
Figure CN119727684A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of drive technology, and in particular to an isolated gate driver and electronic equipment. Background Art
[0002] Isolation drivers have been widely used in the industry for many years, but as the new generation of power devices is faster and the system's requirements for safety and reliability are getting higher and higher, the system has put forward the need for gate drivers to be able to complete fault monitoring and protection. In the existing isolation driver solutions, a large number of isolation drivers with 6-pin (single channel) and 16-pin (dual channel) packages are used. For each power tube gate driver, only 3 pins can be provided, power supply, output and ground, and the fault detection function cannot be realized. If the fault detection function is to be added and the pins are increased and the package shape is changed, hardware modifications will be required, and it will not be compatible with the existing isolation drivers. Summary of the invention
[0003] According to one aspect of the present disclosure, there is provided an isolated gate driver, the isolated gate driver comprising:
[0004] An input side, including an input side signal port;
[0005] The output side includes an output side signal input terminal, a gate drive module, and an output side signal output port. The output side is also connected to an output side circuit. The output side circuit includes a pull-down module and a detection module.
[0006] An isolation component, comprising a first signal terminal and a second signal terminal, wherein the first signal terminal is connected to the input side signal port, and the second signal terminal is connected to the output side signal input terminal, and the isolation component is used to realize electrical isolation and signal transmission between the input side and the output side;
[0007] The output-side signal input terminal is connected to the first terminal of the gate driving module.
[0008] The second end of the gate driving module is connected to the output side signal output port and the first end of the pull-down module.
[0009] The output side signal output port is connected to the transistor to be driven,
[0010] The second end of the pull-down module is connected to the output end of the detection module, and the detection module is used to output a fault signal when a fault is detected in the transistor to be driven;
[0011] The gate driving module is used to generate a driving signal according to the control signal transmitted from the input side to drive the transistor to be driven.
[0012] The pull-down module is used to: when receiving the fault signal, lower the potential of the second end of the gate drive module so that the gate drive module generates an error reporting signal and transmits the error reporting signal to the input side through the isolation component, and the error reporting signal indicates that a fault has occurred in the transistor to be driven.
[0013] In a possible implementation, the pull-down module includes a pull-down transistor, the drain of the pull-down transistor serves as the first end of the pull-down module, the gate of the pull-down transistor serves as the second end of the pull-down module, the gate of the pull-down transistor is grounded, and the gate of the pull-down transistor is turned on when receiving the fault signal.
[0014] In a possible implementation manner, the output side further includes a first power port, a second power port, a first transistor, and a second transistor, wherein:
[0015] The first power port and the second power port are connected to the positive pole and the negative pole of the voltage source respectively.
[0016] The first power port is connected to the source of the first transistor and the power terminal of the gate driving module.
[0017] The gate of the first transistor is connected to the gate of the second transistor,
[0018] The drain of the first transistor is connected to the drain of the second transistor,
[0019] The source of the second transistor and the ground terminal of the gate driving module are connected to the second power port.
[0020] In a possible implementation, the isolated gate driver is connected to a controller, the input side includes a signal input port and an error reporting port, and the signal input port and the error reporting port are both coupled to the controller.
[0021] The signal input port is used to receive the control signal from the controller, and the error reporting port is used to send the error reporting signal to the controller.
[0022] In a possible implementation manner, the input side is also connected to an input side circuit, and the input side circuit includes a first input resistor, a second input resistor, and a first transistor, wherein:
[0023] The first end of the first input resistor and the first end of the second input resistor are used to receive a power supply voltage.
[0024] The second end of the first input resistor is connected to the collector of the first transistor and the signal input port, and is used to transmit the control signal.
[0025] The second end of the second input resistor is connected to the error reporting port,
[0026] The base of the first transistor is connected to the controller.
[0027] The emitter of the first transistor is grounded.
[0028] In one possible implementation,
[0029] The output side circuit includes a first output resistor, a second output resistor, a first output diode, and a second output diode, wherein:
[0030] The output-side signal output port is connected to the first end of the first output resistor and the first end of the second output resistor,
[0031] The second end of the first output resistor is connected to the anode of the first output diode.
[0032] The second end of the second output resistor is connected to the cathode of the second output diode.
[0033] A cathode of the first output diode and an anode of the second output diode are connected to a gate of the transistor to be driven.
[0034] In a possible implementation manner, the input-side signal port includes an error reporting port, a signal input port, and a ground port;
[0035] The output side includes a first power port, a second power port, and an output side signal output port.
[0036] In a possible implementation, the isolation component includes a single-channel isolator, and the input side and the output side transmit signals through the single-channel isolator in a time-sharing transmission manner.
[0037] According to one aspect of the present disclosure, an electronic device is provided, and the electronic device includes the isolated gate driver.
[0038] In a possible implementation, the electronic device includes a power supply device and an electric drive device.
[0039] The disclosed embodiment of the present invention sets a detection module and a pull-down module. The detection module outputs a fault signal when a fault is detected in the transistor to be driven. The pull-down module pulls down the potential of the second end of the gate drive module when the fault signal is received, thereby realizing a fault detection function. The disclosed embodiment of the present invention does not need to increase the pins of the driver, and can realize the fault detection function of the driver while being compatible with the packaging appearance of the current driver, and has the advantages of low cost and high reliability.
[0040] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and do not limit the present disclosure. Other features and aspects of the present disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0041] The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present disclosure and are used to illustrate the technical solutions of the present disclosure together with the specification.
[0042] Figure 1 A schematic diagram of an isolated gate driver according to an embodiment of the present disclosure is shown.
[0043] Figure 2 A schematic diagram of an isolated gate driver according to an embodiment of the present disclosure is shown.
[0044] Figure 3 A schematic diagram of an input side circuit in an isolated gate driver according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION
[0045] Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.
[0046] In the description of the present disclosure, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure.
[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0048] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.
[0049] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.
[0050] The term "and / or" herein is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the term "at least one" herein represents any combination of at least two of any one or more of a plurality of. For example, including at least one of A, B, and C can represent including any one or more elements selected from the set consisting of A, B, and C.
[0051] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present disclosure can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present disclosure.
[0052] See also Figure 1 , Figure 1 A schematic diagram of an isolated gate driver according to an embodiment of the present disclosure is shown.
[0053] like Figure 1 As shown, the isolated gate driver comprises:
[0054] An input side 10, comprising an input side signal port;
[0055] The output side 20 includes an output side signal input terminal 201, a gate driving module 250, and an output side signal output port 210. The output side 20 is also connected to an output side circuit 40. The output side circuit 40 includes a pull-down module 420 and a detection module 410.
[0056] The isolation component 30 includes a first signal terminal 301 and a second signal terminal 302, wherein the first signal terminal 301 is connected to the input side signal port, and the second signal terminal 302 is connected to the output side signal input terminal 201, and the isolation component 30 is used to realize electrical isolation and signal transmission between the input side 10 and the output side 20;
[0057] The output-side signal input terminal 201 is connected to the first terminal of the gate driving module 250.
[0058] The second end of the gate driving module 250 is connected to the output-side signal output port 210 and the first end of the pull-down module 420.
[0059] The output side signal output port 210 is connected to the transistor to be driven.
[0060] The second end of the pull-down module 420 is connected to the output end of the detection module 410, and the detection module 410 is used to output a fault signal when a fault is detected in the transistor to be driven;
[0061] The gate driving module 250 is used to generate a driving signal to drive the transistor to be driven according to the control signal transmitted from the input side 10.
[0062] The pull-down module 420 is used to: when receiving the fault signal, lower the potential of the second end of the gate drive module 250 so that the gate drive module 250 generates an error reporting signal and transmits the error reporting signal to the input side 10 through the isolation component 30. The error reporting signal indicates that a fault has occurred in the transistor to be driven.
[0063] The embodiment of the present disclosure sets a detection module 410 and a pull-down module 420. The detection module 410 outputs a fault signal when a fault is detected in the transistor to be driven. The pull-down module 420 pulls down the potential of the second end of the gate drive module 250 when the fault signal is received, thereby realizing a fault detection function. The embodiment of the present disclosure does not need to increase the pins of the driver, and can realize the fault detection function of the driver while being compatible with the packaging appearance of the current driver, and has the advantages of low cost and high reliability.
[0064] The embodiments of the present disclosure do not limit the number and function of the input side signal ports, and the number of output side ports, and those skilled in the art can set them according to actual conditions and needs. In a possible implementation, the input side 10 and the output side 20 may include multiple ports for signal transmission. The embodiments of the present disclosure do not limit the specific number of input side ports and output side ports. For example, the ports of the input side 10 include at least one error reporting port and one signal input port, and the ports of the output side 20 include at least one power port and one signal output port. The ports of the output side 20 may also include a detection port. Of course, the number of error reporting ports, signal input ports, power ports, signal output ports, and detection ports can be configured according to actual conditions and needs. In addition, other ports may also be included as long as they match the number of pins of the existing package.
[0065] The embodiments of the present disclosure do not limit the specific implementation methods of the gate drive module 250, the output side circuit 40, the detection module 410, the pull-up module, etc. Those skilled in the art may adopt relevant technologies to implement them according to actual conditions and needs, as long as the corresponding functions can be achieved.
[0066] The embodiments of the present disclosure do not limit the specific form, generation method, and specific error type of the fault signal and error reporting signal. Those skilled in the art can set them according to actual conditions and needs and implement them using relevant technologies. For example, the error reporting type may include undervoltage (UV), short circuit / saturation (SC / Saturation), overtemperature (OT), overvoltage (OV), etc. Of course, the detection module 410 may include a fault detection circuit corresponding to the fault type or error reporting type, such as an undervoltage detection circuit, a short circuit / saturation detection circuit, a temperature detection circuit, an overvoltage detection circuit, etc. The embodiments of the present disclosure do not limit the specific implementation method of the fault detection circuit, and those skilled in the art can set them according to actual conditions and needs.
[0067] The embodiments of the present disclosure do not limit the specific implementation method of the isolation component 30. Those skilled in the art may select a suitable isolation scheme to implement the isolation component 30 according to actual conditions and needs. For example, in one possible implementation, the isolation component 30 may include any one of an optocoupler isolator, a capacitor isolator, an electromagnetic isolator, and the like.
[0068] The present disclosure does not limit the specific number of isolation channels in the isolation component 30. Those skilled in the art can set it according to actual conditions and needs. In the embodiment of the present disclosure, the isolation component 30 can be a single-channel isolator, and the input side 10 and the output side 20 transmit signals through the single-channel isolator in a time-sharing manner.
[0069] The embodiments of the present disclosure do not limit the specific implementation of the time-sharing transmission mode, and those skilled in the art can set it according to actual conditions and needs. For example, the input side 10 and the output side 20 can periodically perform signal transmission operations, and the cycle can include a first time period. In the first time period, the input side 10 sends a control signal to the output side 20 through the single-channel isolation component 30; in the second time period, the output side 20 sends a handshake signal to the input side 10 through the single-channel isolation component 30 when receiving the control signal; if the cumulative number of times the input side 10 receives or does not receive a handshake signal is less than K times (K is a positive integer), the signal transmission operation of the next cycle is started; if the input side 10 does not receive a handshake signal for K consecutive times, an error reporting signal is sent and the signal transmission operation is stopped. Exemplarily, K can be set to 1.
[0070] Of course, in other embodiments, the second time period may also directly send an error reporting signal. For example, when the fault signal is received, the output side 20 directly transmits the generated error reporting signal to the input side 10 in the second time period. When the fault signal is not received, no signal may be sent or a normal handshake signal may be sent.
[0071] Of course, in other embodiments, a signal sending mode with an interrupt mechanism may also be used. For example, under normal working conditions, the input side 10 normally sends a control signal to the output side 20. When the fault signal is received, the output side 20 interrupts the signal transmission from the input side 10 to the output side 20 of the isolation component 30, and transmits the generated error reporting signal to the input side 10 in the second time period.
[0072] It should be understood that the isolated gate driver is a gate driver having an isolation component 30. The embodiment of the present disclosure does not limit the specific implementation method of the gate driver. The isolated gate driver can have various components of a conventional gate driver to achieve its gate driving function.
[0073] In a possible implementation, the device is connected to a controller (not shown), and the controller is used to output a control signal, wherein the control signal is a high level or a low level (the embodiment of the present disclosure takes the high level as a preferred example). The embodiment of the present disclosure does not limit the specific implementation of the controller, and those skilled in the art can set it according to actual conditions and needs. In one example, the controller may include a processing component, and the processing component includes, but is not limited to, a separate processor, or a discrete component, or a combination of a processor and a discrete component. The processor may include a controller having an execution instruction function in an electronic device, and the processor may be implemented in any appropriate manner, for example, by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components. Inside the processor, the executable instructions may be executed by hardware circuits such as logic gates, switches, application-specific integrated circuits (ASICs), programmable logic controllers, and embedded microcontrollers.
[0074] The embodiments of the present disclosure do not limit the specific implementation method of the pull-down module 420. By way of example, in one possible implementation, the pull-down module 420 may include a pull-down transistor, the drain of the pull-down transistor serving as the first end of the pull-down module 420, the gate of the pull-down transistor serving as the second end of the pull-down module 420, the gate of the pull-down transistor being grounded, and the gate of the pull-down transistor being turned on when receiving the fault signal.
[0075] As an example, the detection module 410 includes a short-circuit detection circuit, which is connected to the source of the transistor to be driven. If a short circuit occurs (including a gate-source short circuit of the transistor to be driven, a short circuit between the driver output and the ground, etc.), the short-circuit detection circuit outputs a fault signal to turn on the pull-down transistor. In this way, the potential of the output side signal output port 210 can be pulled down to a low voltage. The gate drive module 250 outputs a high-level signal under normal circumstances. If it is detected that the potential of the output side signal output port 210 is suddenly pulled down, the internal short-circuit detection mechanism will be triggered, thereby sending an error reporting signal. Usually, if the gate drive module 250 fails to pull up the output in time after performing the pull-up action, an error will be reported, which is regarded as a short-circuit fault.
[0076] As an example, the detection module 410 includes an over-temperature detection circuit, which is arranged in the transistor to be driven. If the transistor to be driven is overheated, the over-temperature detection circuit outputs a fault signal to turn on the pull-down transistor. In this way, the potential of the output side signal output port 210 can be pulled down to a low voltage. Under normal circumstances, the gate drive module 250 outputs a high-level signal. If it is detected that the potential of the output side signal output port 210 is suddenly pulled down, it will trigger the internal short-circuit detection mechanism, thereby issuing an error reporting signal.
[0077] See also Figure 2 , Figure 2 A schematic diagram of an isolated gate driver according to an embodiment of the present disclosure is shown.
[0078] In a possible implementation, Figure 2 As shown, the output side 20 further includes a first power port 220, a second power port 230, a first transistor Q1, and a second transistor Q2, wherein:
[0079] The first power port 220 and the second power port 230 are connected to the positive and negative poles of a voltage source, respectively.
[0080] The first power port 220 is connected to the source of the first transistor Q1 and the power terminal of the gate driving module 250.
[0081] The gate of the first transistor Q1 is connected to the gate of the second transistor Q2.
[0082] The drain of the first transistor Q1 is connected to the drain of the second transistor Q2.
[0083] The source of the second transistor Q2 and the ground terminal of the gate driving module 250 are connected to the second power port 230 .
[0084] In a possible implementation, the isolated gate driver is connected to a controller, for example, Figure 2 As shown, the input side 10 may include a signal input port 120 and an error reporting port 110. The signal input port 120 and the error reporting port 110 are both coupled to the controller.
[0085] The signal input port 120 is used to receive the control signal from the controller, and the error reporting port 110 is used to send the error reporting signal to the controller.
[0086] See also Figure 3 , Figure 3 A schematic diagram of an input side circuit in an isolated gate driver according to an embodiment of the present disclosure is shown.
[0087] In a possible implementation manner, the input side 10 is also connected to an input side circuit, for example, Figure 3 As shown, the input side circuit may include:
[0088] A first input resistor Ri1, a second input resistor Ri2, and a first transistor Qs1, wherein:
[0089] The first end of the first input resistor Ri1 and the first end of the second input resistor Ri2 are used to receive a power supply voltage VCC.
[0090] The second end of the first input resistor Ri1 is connected to the collector of the first transistor Qs1 and the signal input port 120, and is used to output a control signal (high level or low level).
[0091] The second end of the second input resistor Ri2 is connected to the error reporting port 110.
[0092] The base of the first transistor Qs1 is used to receive an input signal (a control signal sent by the controller), and the emitter of the first transistor Qs1 is grounded.
[0093] Exemplarily, the input is a conduction control signal of the first transistor Qs1.
[0094] For example, Figure 3 As shown, if the first transistor Qs1 is turned on, the level of the signal input port 120 is pulled low, and no current flows into the signal input port 120. In this case, the output side 20 (signal output port 220) is logic low. If the first transistor Qs1 is turned off, the level of the signal input port 120 is pulled high, and current flows into the signal input port 120 and is transmitted to the output side 20 through the isolation component 30 (such as an optical coupler isolator). In this case, the output side 20 (signal output port 220) is logic high.
[0095] For example, Figure 3 As shown, the error reporting port 110 is an open drain output connected to a pull-up resistor. The error reporting port 110 in normal operation is high impedance, that is, the error reporting port 110 is at a high level; when an error occurs, the error reporting port 110 is pulled low. Of course, the error reporting port 110 can also be designed as a normal logic output signal, which is not limited in the embodiment of the present disclosure.
[0096] Things that should be explained, Figure 3The input side circuit shown is an example of a current input type (optocoupler compatible), which is not limited in the embodiments of the present disclosure. Those skilled in the art can use other circuits to implement current input type circuits according to actual conditions and needs. Of course, the embodiments of the present disclosure are not limited to current input types, but can also be used for voltage input types. Those skilled in the art can set them according to actual conditions and needs.
[0097] In a possible implementation, Figure 2 As shown, the output side circuit 40 may further include a first output resistor R1, a second output resistor R2, a first output diode D1, and a second output diode D2, wherein:
[0098] The output-side signal output port 210 is connected to a first end of the first output resistor R1 and a first end of the second output resistor R2.
[0099] The second end of the first output resistor R1 is connected to the anode of the first output diode D1.
[0100] The second end of the second output resistor R2 is connected to the cathode of the second output diode D2.
[0101] A cathode of the first output diode D1 and an anode of the second output diode D2 are connected to the gate of the transistor to be driven.
[0102] According to one aspect of the present disclosure, an electronic device is provided, and the electronic device includes the isolated gate driver.
[0103] In a possible implementation, the electronic device includes a power supply device and an electric drive device. The embodiments of the present disclosure do not limit the specific types of the power supply device and the electric drive device. Those skilled in the art can set them according to actual conditions and needs. For example, the power supply device and the electric drive device may include a vehicle charger, an inverter, an uninterruptible power supply UPS, AC / DC and DC / DC converters, etc.
[0104] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.
Claims
1. An isolated gate driver, characterized in that: The isolated gate driver comprises: An input side, including an input side signal port; The output side includes an output side signal input terminal, a gate drive module, and an output side signal output port. The output side is also connected to an output side circuit. The output side circuit includes a pull-down module and a detection module. An isolation component, comprising a first signal terminal and a second signal terminal, wherein the first signal terminal is connected to the input side signal port, and the second signal terminal is connected to the output side signal input terminal, and the isolation component is used to realize electrical isolation and signal transmission between the input side and the output side; The output-side signal input terminal is connected to the first terminal of the gate driving module. The second end of the gate driving module is connected to the output side signal output port and the first end of the pull-down module. The output side signal output port is connected to the transistor to be driven, The second end of the pull-down module is connected to the output end of the detection module, and the detection module is used to output a fault signal when a fault is detected in the transistor to be driven; The gate driving module is used to generate a driving signal according to the control signal transmitted from the input side to drive the transistor to be driven. The pull-down module is used to: when receiving the fault signal, lower the potential of the second end of the gate drive module so that the gate drive module generates an error reporting signal and transmits the error reporting signal to the input side through the isolation component, and the error reporting signal indicates that a fault has occurred in the transistor to be driven.
2. The isolated gate driver according to claim 1, wherein: The pull-down module includes a pull-down transistor, the drain of the pull-down transistor serves as the first end of the pull-down module, the gate of the pull-down transistor serves as the second end of the pull-down module, the gate of the pull-down transistor is grounded, and the gate of the pull-down transistor is turned on when receiving the fault signal.
3. The isolated gate driver according to claim 1, wherein: The output side also includes a first power port, a second power port, a first transistor, and a second transistor, wherein: The first power port and the second power port are connected to the positive pole and the negative pole of the voltage source respectively. The first power port is connected to the source of the first transistor and the power terminal of the gate driving module. The gate of the first transistor is connected to the gate of the second transistor, The drain of the first transistor is connected to the drain of the second transistor, The source of the second transistor and the ground terminal of the gate driving module are connected to the second power port.
4. The isolated gate driver according to claim 1, wherein: The isolated gate driver is connected to a controller, the input side includes a signal input port and an error reporting port, and the signal input port and the error reporting port are both coupled to the controller. The signal input port is used to receive the control signal from the controller, and the error reporting port is used to send the error reporting signal to the controller.
5. The isolated gate driver according to claim 4, characterized in that: The input side is also connected to an input side circuit, and the input side circuit includes a first input resistor, a second input resistor, and a first transistor, wherein: The first end of the first input resistor and the first end of the second input resistor are used to receive a power supply voltage. The second end of the first input resistor is connected to the collector of the first transistor and the signal input port, and is used to transmit the control signal. The second end of the second input resistor is connected to the error reporting port, The base of the first transistor is connected to the controller. The emitter of the first transistor is grounded.
6. The isolated gate driver according to claim 1, wherein: The output side circuit includes a first output resistor, a second output resistor, a first output diode, and a second output diode, wherein: The output-side signal output port is connected to the first end of the first output resistor and the first end of the second output resistor, The second end of the first output resistor is connected to the anode of the first output diode. The second end of the second output resistor is connected to the cathode of the second output diode. A cathode of the first output diode and an anode of the second output diode are connected to a gate of the transistor to be driven.
7. The isolated gate driver according to claim 1, wherein: The input side signal port includes an error reporting port, a signal input port and a ground port; The output side includes a first power port, a second power port, and an output side signal output port.
8. The isolated gate driver according to claim 1, wherein: The isolation component includes a single-channel isolator, and the input side and the output side transmit signals through the single-channel isolator in a time-sharing transmission manner.
9. An electronic device, characterized in that: The electronic device comprises the isolated gate driver according to any one of claims 1 to 8.
10. The electronic device according to claim 9, characterized in that: The electronic equipment includes a power supply device and an electric drive device.