Gate driving module and low power consumption mode control circuit

Abstract

The utility model discloses a grid driving module and a low-power-consumption mode control circuit. The grid driving module is characterized in that a first voltage output end of a first voltage domain unit is connected with a power supply end of the grid driving module; the second voltage output end of the first voltage domain unit is connected with the power supply end of the second voltage domain unit; in the first voltage domain unit, the output end of a first voltage source is connected with the input end of a first voltage stabilizer; the output end of the first voltage stabilizer is connected with the first end of the first switch; the second end of the first switch is connected with the output end of the second voltage stabilizer, and the output end of the second voltage stabilizer is connected with the second voltage output end of the first voltage domain unit; the control unit is connected with the control end of the first switch; power consumption of the first voltage stabilizer is smaller than that of the second voltage stabilizer. In the gate driving module, the two voltage stabilizers output the output voltages with different power consumption to supply power to the second voltage domain, and power consumption optimization of the gate driving module is realized through power supply switching in different modes.

Description

TECHNICAL FIELD

[0001] The utility model relates to the power supply planning technical field of battery especially relates to a gate drive module and low power consumption mode control circuit. BACKGROUND

[0002] In the application of lithium battery, in order to guarantee the endurance effect of lithium battery, the internal control chip of lithium battery will enter low power consumption mode when not supplying power. In low power consumption mode, when the battery does not work, the power consumption of lithium battery power supply control chip determines the consumption of the battery when not working. When the low power consumption of lithium battery control chip is lower, the power consumption is lower, and it is more energy-saving.

[0003] In the prior art, a separate power supply control chip is used in the low power consumption control circuit of lithium battery power supply to manage the output power supply of lithium battery. The power supply control circuit of the lithium battery power supply control chip in low power consumption mode and the power supply control circuit of the power supply control chip in normal work adopt the same design, and the power supply control circuit cannot further reduce power consumption when in low power consumption mode. At the same time, in the prior art, the output power supply management of lithium battery, the wake-up circuit for exiting low power consumption mode is complex, and the wake-up response of each module of the power supply control chip is slow. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of gate drive module and low power consumption mode control circuit to solve the problem of large power consumption in low power consumption mode in current power supply control circuit, slow circuit wake-up speed.

[0005] In the first aspect, the utility model provides a kind of gate drive module, comprising: control unit, first voltage domain unit and second voltage domain unit;

[0006] The first input end of the control unit is connected with the wake-up input end of the gate drive module;The control output end of the control unit is connected with the control end of the first voltage domain unit;The output end of the control unit is connected with the wake-up output end of the gate drive module;

[0007] The power input end of the first voltage domain unit is connected with the power input end of the gate drive module;

[0008] The first voltage output end of the first voltage domain unit is connected with the power supply end of the gate drive module, and the first voltage output end of the first voltage domain unit is used to output first working voltage;

[0009] The second voltage output end of the first voltage domain unit is connected with the power supply end of the second voltage domain unit, and the second voltage output end of the first voltage domain unit is used to output second working voltage to power supply for the second voltage domain unit;

[0010] The first voltage domain unit includes: a first voltage source, a first regulator, a second regulator, and a first switch;

[0011] The output terminal of the first voltage source is connected to the input terminal of the first voltage regulator; the output terminal of the first voltage regulator is connected to the first terminal of the first switch; the second terminal of the first switch is connected to the second voltage output terminal of the first voltage domain unit; the output terminal of the second voltage regulator is connected to the second voltage output terminal of the first voltage domain unit; the control unit is connected to the control terminal of the first switch and the control terminal of the second voltage regulator.

[0012] The power consumption of the first voltage regulator is less than that of the second voltage regulator.

[0013] Optionally, the first voltage domain unit further includes: a third voltage regulator;

[0014] The input terminal of the third voltage regulator is connected to the power input terminal of the first voltage domain unit, and the output terminal of the third voltage regulator is connected to the first voltage output terminal of the first voltage domain unit.

[0015] Optionally, the second voltage domain unit includes at least one of a register, a wake-up unit, a fault flag unit, a controller, and a serial peripheral interface.

[0016] Optionally, the first operating voltage is 3.3V; the second operating voltage is 5V.

[0017] Secondly, this utility model provides a low-power mode control circuit, including: a wake-up circuit, a main control module, and a gate drive module in any embodiment of this utility model;

[0018] The power input terminal of the gate drive module is connected to the first external power supply.

[0019] The power supply terminal of the main control module is connected to the power supply terminal of the gate drive module, or the power supply terminal of the main control module is connected to a second external power supply.

[0020] The wake-up input terminal of the gate driving module is connected to the first wake-up output terminal of the wake-up circuit; the power wake-up terminal of the main control module is connected to the wake-up output terminal of the gate driving module and the second wake-up output terminal of the wake-up circuit.

[0021] The wake-up circuit is used to wake up the gate drive module and the main control module.

[0022] Optionally, the wake-up circuit includes a first wake-up circuit and a second wake-up circuit;

[0023] The first terminal of the first wake-up circuit is connected to the first wake-up output terminal of the wake-up circuit, and the first terminal of the second wake-up circuit is connected to the second wake-up output terminal of the wake-up circuit;

[0024] The second terminal of the first wake-up circuit is connected to the second terminal of the second wake-up circuit.

[0025] Optionally, the first wake-up circuit includes: a first resistor, a first diode, and a second switch;

[0026] The first end of the first resistor is connected to a third external power supply, and the second end of the first resistor is connected to the positive terminal of the first diode.

[0027] The negative terminal of the first diode is connected to the first terminal of the second switch, the first terminal of the first wake-up circuit, and the second terminal of the first wake-up circuit;

[0028] The second terminal of the second switch is grounded.

[0029] Optionally, the second wake-up circuit includes: a second resistor and a second diode;

[0030] The first end of the second resistor is connected to the fourth external power supply, and the second end of the second resistor is connected to the positive terminal of the second diode and the first end of the second wake-up circuit.

[0031] The negative terminal of the second diode is connected to the second terminal of the second wake-up circuit.

[0032] Optionally, the wake-up input terminal of the gate drive module can also be used for high-voltage output or high-voltage PWM signal input.

[0033] Optionally, the power wake-up terminal of the main control module is also used to send control signals to the gate drive module;

[0034] The wake-up output terminal of the gate drive module is also used to receive control signals from the main control module.

[0035] This invention relates to a gate drive module and a low-power mode control circuit. The gate drive module includes a first voltage domain unit, a second voltage domain unit, and a control unit. The first voltage domain unit includes two voltage regulators with different power consumptions to output voltages with different power consumptions. The on / off state of a first switch controls the type of voltage output from the second voltage output terminal of the first voltage domain unit. The second voltage domain unit includes components that still need to be powered on when the gate drive module enters low-power mode. The type of voltage received by the power supply terminal of the second voltage domain unit determines the operating mode of the components in the second voltage domain unit. The gate drive module provided by this invention ensures that only necessary components operate in low-power mode, and these components operate at low-power voltages, reducing power loss. Simultaneously, the gate drive module can switch power supplies between different modes, improving the flexibility of power consumption optimization. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the structure of a gate driving module provided in an embodiment of the present invention;

[0038] Figure 2 This is a schematic diagram of another gate driving module provided in an embodiment of the present invention;

[0039] Figure 3 This is a schematic diagram of a low-power mode control circuit provided in an embodiment of the present invention;

[0040] Figure 4 This is a schematic diagram of another low-power mode control circuit provided in this embodiment of the present invention. Detailed Implementation

[0041] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0042] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0043] Figure 1 This is a schematic diagram of the structure of a gate driving module provided in an embodiment of the present invention, as shown below. Figure 1 As shown, the gate drive module 01 includes:

[0044] Control unit 101, first voltage domain unit 102, and second voltage domain unit 103;

[0045] The first input terminal of the control unit 101 is connected to the wake-up input terminal I1 of the gate driving module; the control output terminal of the control unit 101 is connected to the control terminal of the first voltage domain unit 102; the output terminal of the control unit 101 is connected to the wake-up output terminal I2 of the gate driving module; the power input terminal of the first voltage domain unit 102 is connected to the power input terminal I3 of the gate driving module; the first voltage output terminal of the first voltage domain unit 102 is connected to the power supply terminal I4 of the gate driving module, and the first voltage output terminal of the first voltage domain unit 102 is used to output a first operating voltage; the second voltage output terminal of the first voltage domain unit 102 is connected to the power supply terminal of the second voltage domain unit 103, and the second voltage output terminal of the first voltage domain unit 102 is used to output a second operating voltage to power the second voltage domain unit 103.

[0046] The first voltage domain unit 102 includes: a first voltage source 1021, a first voltage regulator 1022, a second voltage regulator 1024, and a first switch 1023; the output terminal of the first voltage source 1021 is connected to the input terminal of the first voltage regulator 1022; the output terminal of the first voltage regulator 1022 is connected to the first terminal of the first switch 1023; the second terminal of the first switch 1023 is connected to the second voltage output terminal of the first voltage domain unit 102; the output terminal of the second voltage regulator 1024 is connected to the second voltage output terminal of the first voltage domain unit 102; the control unit 101 is connected to the control terminal of the first switch 1023 and the control terminal of the second voltage regulator 1024; the power consumption of the first voltage regulator 1022 is less than that of the second voltage regulator 1024.

[0047] Specifically, the gate drive module 01 includes two voltage domain units: a first voltage domain unit 102 and a second voltage domain unit 103.

[0048] The first voltage domain unit 102 has two voltage output terminals. The first power output terminal of the first voltage domain unit 102 is connected to the power supply terminal I4 of the gate drive module. The first power output terminal of the first voltage domain unit 102 can output a first operating voltage to supply power to other modules. Optionally, the first operating voltage is 3.3V.

[0049] The second power output terminal of the first voltage domain unit 102 is connected to the power supply terminal of the second voltage domain unit 103. The second power output terminal of the first voltage domain unit 102 supplies power to the second voltage domain unit 103, providing a second operating voltage. In providing the second voltage to the second voltage domain unit 103, the second operating voltage includes a voltage that ensures the normal operation of the second voltage domain unit 103 and a voltage that ensures the second voltage domain unit 103 operates in a low-power mode. Optionally, the second operating voltage includes a 5V voltage and a 5V low-power voltage.

[0050] The second voltage domain unit 103 is an internal unit within the gate driving module 01. The second voltage domain unit 103 includes components that need to remain powered on even when the gate driving module 01 enters a low-power mode. For example, the second voltage domain unit 103 includes a register of the gate driving module 01. The register remains powered on even when the gate driving module 01 enters a low-power mode to store temporary operating parameters of the gate driving module 01. When the gate driving module 01 is woken up, the control unit 101 can retrieve the temporary operating parameters from the register and continue normal operation.

[0051] The wake-up input terminal I1 and the wake-up output terminal I2 of the gate drive module 01 are the wake-up ports of the gate drive module 01. The first input terminal and the output terminal of the control unit 101 are respectively connected to the wake-up input terminal I1 and the wake-up output terminal I2 of the gate drive module 01 to perform wake-up control of the gate drive module 01 in low power mode.

[0052] In the first voltage domain unit 102, the first voltage source 1021 provides a voltage source for the first voltage regulator 1022, which outputs a second operating voltage. The output terminal of the second voltage regulator 1024 is connected to the second voltage output terminal of the first voltage domain unit 102. The power consumption of the second voltage regulator 1024 is less than that of the first voltage regulator 1022, and the second voltage regulator 1024 outputs a low-power voltage. The first switch 1023 controls the second voltage output terminal of the first voltage domain unit 102 to output either the voltage output by the first voltage regulator 1022 or the voltage output by the second voltage regulator 1024. For example, when the first switch 1023 is on and the second voltage regulator 1024 is off, the second voltage output terminal of the first voltage domain unit 102 outputs the output voltage of the first voltage regulator 1022, which has relatively higher power consumption—that is, the normal operating voltage. At this time, the power supply to the components in the second voltage domain unit 103 is the normal operating voltage. When the first switch 1023 is turned off and the second regulator 1024 is turned on, the second voltage output terminal of the first voltage domain unit 102 outputs a low-power output voltage from the second regulator 1024. At this time, the power supply to the components in the second voltage domain unit 103 is a low-power voltage. Optionally, the first voltage source 1021 is a bandgap reference circuit (BRG), which provides a stable reference voltage to the first regulator.

[0053] This invention provides a gate driving module, comprising a first voltage domain unit, a second voltage domain unit, and a control unit. The first voltage domain unit includes two voltage regulators with different power consumptions to output voltages with different power consumptions. The on / off state of a first switch controls the type of voltage output from the second voltage output terminal of the first voltage domain unit. The second voltage domain unit includes components that still require power-on when the gate driving module enters low-power mode. The type of voltage received by the power supply terminal of the second voltage domain unit determines the operating mode of the components within it. This invention provides a gate driving module that ensures only necessary components operate in low-power mode, and these components operate at low-power voltages, reducing power loss. Furthermore, the gate driving module can switch power supplies between different modes, improving the flexibility of power consumption optimization.

[0054] Based on the above embodiments, Figure 2 This is a schematic diagram of another gate driving module provided in an embodiment of the present invention, as shown below. Figure 2As shown, the first voltage domain unit 102 in the gate drive module 01 further includes a third voltage regulator 1025; the input terminal of the third voltage regulator 1025 is connected to the power input terminal of the first voltage domain unit 102, and the output terminal of the third voltage regulator 1025 is connected to the first voltage output terminal of the first voltage domain unit 102. The second voltage domain unit 103 includes at least one of a register, a wake-up unit, a fault flag unit, a controller, and a serial peripheral interface. The first operating voltage is 3.3V; the second operating voltage is 5V.

[0055] Specifically, in the first voltage domain unit 102, the power input terminal of the first voltage domain unit 102 is connected to the power input terminal I3 of the gate driving module 01; the first voltage output terminal of the first voltage domain unit 102 is connected to the power supply terminal I4 of the gate driving module 01, and the first voltage output terminal of the first voltage domain unit 102 is used to output the first operating voltage. The third voltage regulator 1025 receives the power received from the power input terminal I3 of the gate driving module 01 and outputs it through the power supply terminal I4 of the gate driving module 01 after linear regulation. Optionally, the first operating voltage output from the power supply terminal I4 of the gate driving module 01 is the operating voltage of the main control module.

[0056] The second voltage domain unit 103 includes at least one of a register, a wake-up unit, a fault flag, a controller, and a serial peripheral interface. For example, the register stores state information of the gate drive module 01 before entering low-power mode, such as current operating parameters and configuration settings. When the gate drive module 01 is woken up again, it can quickly return to its previous operating state. The information in the register can be used to restore the operating state of the gate drive module 01 to transition to normal operation mode. The wake-up unit is responsible for detecting a wake-up signal and triggering the gate drive module 01 to return from low-power mode to normal operation mode upon receiving the signal. The fault flag monitors the state of the gate drive module 01 during low-power mode. If a fault is detected, the fault flag can set a flag bit, which is read and processed after the gate drive module 01 exits low-power mode. The controller can control the operation of the gate drive module 01 entering and exiting low-power mode. Optionally, the controller is the control unit 101 of the gate drive module 01. The serial peripheral interface is used to communicate with external devices to receive instructions to enter or exit low-power mode. Data is exchanged with external devices while the gate driver module 01 is in low-power mode. Optionally, the serial peripheral interface includes: a wake-up input I1 and a wake-up output I2 of the gate driver module 01.

[0057] Based on the above embodiments, Figure 3 This is a schematic diagram of a low-power mode control circuit provided in an embodiment of the present invention, as shown below.Figure 3 As shown, the low-power mode control circuit includes: a wake-up circuit 03, a main control module 02, and a gate drive module 01 in any of the above embodiments; the power input terminal I3 of the gate drive module is connected to a first external power supply; the power supply terminal I5 of the main control module 02 is connected to the power supply terminal I4 of the gate drive module, or the power supply terminal I5 of the main control module 02 is connected to a second external power supply; the wake-up input terminal I1 of the gate drive module is connected to the first wake-up output terminal of the wake-up circuit 03; the power wake-up terminal of the main control module 02, the wake-up output terminal I2 of the gate drive module, and the second wake-up output terminal of the wake-up circuit 03 are connected; the wake-up circuit 03 is used to wake up the gate drive module 01 and the main control module 02.

[0058] Specifically, regarding the power supply connection of the main control module 02, when the power supply terminal I5 of the main control module 02 is connected to the power supply terminal I4 of the gate drive module 01, the main control module 02 is powered by the gate drive module 01; when the power supply terminal I5 of the main control module 02 is connected to the second external power supply, the main control module 02 is powered by the second external power supply. The first wake-up output terminal in the wake-up circuit 03 can send a wake-up input signal to the wake-up input terminal I1 of the gate drive module to wake up the gate drive module 01.

[0059] For example, refer to Figures 1 to 3In the low-power mode control circuit, when the power supply terminal I5 of the main control module 02 is connected to the power supply terminal I4 of the gate drive module 01, the main control module 02 is powered by the gate drive module 01. When the low-power mode control circuit enters the low-power mode, the power supply terminal I4 of the gate drive module 01 stops supplying power to the main control module 02, that is, the third voltage regulator 1025 is turned off, and the first voltage output terminal of the first voltage domain unit 102 stops outputting the first operating voltage. The main control module 02 is powered off. The first switch 1023 in the first voltage domain unit 102 is turned off, and the first voltage regulator 1022 stops outputting voltage to the second voltage output terminal of the first voltage domain unit 102. The second voltage output terminal of the first voltage domain unit 102 is output by the second voltage regulator 1024. Since the power consumption of the second voltage regulator 1024 is less than that of the first voltage regulator 1022, the second voltage domain unit 103 in the gate drive module 01 enters the low-power mode. When the low-power mode control circuit exits the low-power mode, the wake-up circuit 03 sends a signal to the wake-up input I1 of the gate drive module through its first wake-up output terminal. In the gate drive module 01, the control unit 101 controls the first switch 1023 to close again, and the second voltage output terminal of the first voltage domain unit 102 of the gate drive module 01 is reconnected to the output terminal of the first voltage regulator 1022. Since the power consumption of the first voltage regulator 1022 is greater than that of the second voltage regulator 1024, the second voltage domain unit 103 of the gate drive module 01 exits the low-power mode. The gate drive module 01 then controls the main control module 02 to power on again through its wake-up output terminal I2 and power supply terminal I4.

[0060] Continue to refer to Figures 1 to 3In the low-power mode control circuit, when the power supply terminal I5 of the main control module 02 is connected to the second external power supply, the main control module 02 is powered by the second external power supply. When the low-power mode control circuit enters the low-power mode, the first switch 1023 in the first voltage domain unit 102 is turned off, and the first voltage regulator 1022 stops outputting voltage to the second voltage output terminal of the first voltage domain unit 102. The second voltage output terminal of the first voltage domain unit 102 is output by the second voltage regulator 1024. Since the power consumption of the second voltage regulator 1024 is less than that of the first voltage regulator 1022, the second voltage domain unit 103 in the gate drive module 01 enters the low-power mode. At the same time, the main control module 02 is configured to enter the low-power mode. When the low-power mode control circuit exits the low-power mode, the wake-up circuit 03 sends a signal to the wake-up input I1 of the gate drive module through its first wake-up output terminal. In the gate drive module 01, the control unit 101 controls the first switch 1023 to close again, and the second voltage output terminal of the first voltage domain unit 102 of the gate drive module 01 is reconnected to the output terminal of the first voltage regulator 1022. Since the power consumption of the first voltage regulator 1022 is greater than that of the second voltage regulator 1024, the second voltage domain unit 103 of the gate drive module 01 exits the low-power mode. At the same time, the second wake-up output terminal of the wake-up circuit 03 sends a wake-up signal to the power wake-up terminal of the main control module 02 to wake up the main control module 02. After the gate drive module 01 is woken up, it also sends a wake-up signal to the main control module 02 through its wake-up output terminal I2. After receiving the two wake-up signals, the main control module 02 officially enters the normal operation mode.

[0061] In the low-power mode control circuit provided in this embodiment, the main control module can be powered internally by the gate drive module or directly by an external power supply. The gate drive module controls the main control module to power off and wake up to enter or exit the low-power mode. The second voltage domain unit inside the gate drive module enters or exits the low-power mode according to the type of voltage regulator connected to the second voltage output terminal of the first voltage domain. The wake-up circuit generates wake-up signals, which are sent to the wake-up input terminal of the gate drive module or the power wake-up terminal of the main control module through its two wake-up output terminals to wake up the gate drive module or the main control module. In the low-power mode control circuit of this embodiment, the low-power mode can significantly reduce energy consumption and extend the usage time or standby time of the device when the circuit is not in operation; when the circuit needs to be started, the wake-up circuit can quickly wake up the gate drive module and the main control module, so that the circuit can quickly transition from the low-power mode to the normal operating mode.

[0062] Based on the above embodiments, Figure 4 This is a schematic diagram of another low-power mode control circuit provided in this embodiment of the present invention, as shown below.Figure 4 As shown, the wake-up circuit 03 includes a first wake-up circuit 301 and a second wake-up circuit 302. The first terminal of the first wake-up circuit 301 is connected to the first wake-up output terminal of the wake-up circuit 03, and the first terminal of the second wake-up circuit 302 is connected to the second wake-up output terminal of the wake-up circuit 03. The second terminal of the first wake-up circuit 301 is connected to the second terminal of the second wake-up circuit 302. The first wake-up circuit 301 includes a first resistor R1, a first diode D1, and a second switch SW1. The first terminal of the first resistor R1 is connected to a third external power supply, and the second terminal of the first resistor R1 is connected to the anode of the first diode D1. The cathode of the first diode D1 is connected to the first terminal of the second switch SW1, the first terminal of the first wake-up circuit 301, and the second terminal of the first wake-up circuit 301. The second terminal of the second switch SW1 is grounded. The second wake-up circuit 302 includes a second resistor R2 and a second diode D2. The first terminal of the second resistor R2 is connected to a fourth external power supply, and the second terminal of the second resistor R2 is connected to the anode of the second diode D2 and the first terminal of the second wake-up circuit 302. The cathode of the second diode D2 is connected to the second terminal of the second wake-up circuit 302.

[0063] Specifically, in conjunction with the above, the wake-up circuit 03 sends wake-up signals to the main control module 02 and the gate drive module 01. Within the wake-up circuit 03, the first wake-up circuit 301 sends a wake-up signal to the gate drive module 01, and the second wake-up circuit 302 sends a wake-up signal to the main control module 02. In the first wake-up circuit 301, the first resistor R1 acts as a current-limiting element, limiting the current flowing from the third external power supply to prevent excessive current from damaging subsequent circuit components. The first diode D1 acts as a unidirectional conductive element, preventing reverse current to ensure that current can only flow from the third external power supply through the first resistor R1 to the output terminal of the first wake-up circuit 301. The second switch SW1 acts as a control element, controlling the output state of the first wake-up circuit 301. When the second switch SW1 is closed, the negative terminal of the first diode D1 is grounded, and the output terminal of the first wake-up circuit 301 forms a low-level output to trigger the wake-up mechanism of the gate drive module 01. When the second switch SW1 is open, the output terminal is in a high-impedance state or a high-level state, and wake-up is not triggered. In the second wake-up circuit 302, the second resistor R2 acts as a current-limiting element to limit the current flowing in from the fourth external power supply. When the second switch SW1 is closed, the second wake-up output terminal in the second wake-up circuit 302 outputs a high level to trigger the wake-up mechanism of the main control module. When the second switch SW1 is open, the second wake-up output terminal in the second wake-up circuit 302 does not trigger wake-up.

[0064] Based on the above embodiments, continue to refer to Figure 4The wake-up input terminal I1 of the gate drive module 01 is also used for high-voltage output or high-voltage PWM signal input. The power wake-up terminal of the main control module 02 is also used to send control signals to the gate drive module 01; the wake-up output terminal I2 of the gate drive module 01 is also used to receive control signals from the main control module 02.

[0065] Specifically, the gate drive module 01 is also used to realize the function of high voltage output or high voltage PWM signal input. This function is reused in the wake-up input terminal I1 of the gate drive module, so there is no need to set the wake-up input terminal I1 of the gate drive module 01 separately, thus saving the pin resources of the chip.

[0066] Between the main control module 02 and the gate drive module 01, under normal operating conditions, the gate drive module 01 receives control signals from the main control module 02 to perform high-voltage output or high-voltage PWM signal input. The control signal transmission function is multiplexed between the power-on wake-up terminal of the main control module 02 and the wake-up output terminal I2 of the gate drive module 01, simplifying circuit design and layout and reducing hardware costs.

[0067] It should be understood that the various forms of the process shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this utility model can be achieved, and this is not limited herein.

[0068] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A gate driving module, characterized in that, include: Control unit, first voltage domain unit, and second voltage domain unit; The first input terminal of the control unit is connected to the wake-up input terminal of the gate drive module; The control output terminal of the control unit is connected to the control terminal of the first voltage domain unit; the output terminal of the control unit is connected to the wake-up output terminal of the gate drive module. The power input terminal of the first voltage domain unit is connected to the power input terminal of the gate drive module; The first voltage output terminal of the first voltage domain unit is connected to the power supply terminal of the gate driving module, and the first voltage output terminal of the first voltage domain unit is used to output the first operating voltage. The second voltage output terminal of the first voltage domain unit is connected to the power supply terminal of the second voltage domain unit, and the second voltage output terminal of the first voltage domain unit is used to output a second operating voltage to supply power to the second voltage domain unit; The first voltage domain unit includes: a first voltage source, a first regulator, a second regulator, and a first switch; The output terminal of the first voltage source is connected to the input terminal of the first voltage regulator; the output terminal of the first voltage regulator is connected to the first terminal of the first switch; the second terminal of the first switch is connected to the second voltage output terminal of the first voltage domain unit; the output terminal of the second voltage regulator is connected to the second voltage output terminal of the first voltage domain unit; the control unit is connected to the control terminal of the first switch and the control terminal of the second voltage regulator. The power consumption of the first voltage regulator is less than that of the second voltage regulator.

2. The gate driving module according to claim 1, characterized in that, The first voltage domain unit further includes: a third voltage regulator; The input terminal of the third voltage regulator is connected to the power input terminal of the first voltage domain unit, and the output terminal of the third voltage regulator is connected to the first voltage output terminal of the first voltage domain unit.

3. The gate driving module according to claim 1, characterized in that, The second voltage domain unit includes at least one of the following: a register, a wake-up unit, a fault flag unit, a controller, and a serial peripheral interface.

4. The gate driving module according to claim 1, characterized in that, The first operating voltage is 3.3V; the second operating voltage is 5V.

5. A low-power mode control circuit, characterized in that, include: The wake-up circuit, the main control module, and the gate drive module of any one of claims 1-4 above; The power input terminal of the gate drive module is connected to the first external power supply. The power supply terminal of the main control module is connected to the power supply terminal of the gate drive module, or the power supply terminal of the main control module is connected to a second external power supply. The wake-up input terminal of the gate driving module is connected to the first wake-up output terminal of the wake-up circuit; the power wake-up terminal of the main control module is connected to the wake-up output terminal of the gate driving module and the second wake-up output terminal of the wake-up circuit. The wake-up circuit is used to wake up the gate drive module and the main control module.

6. The low-power mode control circuit according to claim 5, characterized in that, The wake-up circuit includes a first wake-up circuit and a second wake-up circuit; The first terminal of the first wake-up circuit is connected to the first wake-up output terminal of the wake-up circuit, and the first terminal of the second wake-up circuit is connected to the second wake-up output terminal of the wake-up circuit; The second terminal of the first wake-up circuit is connected to the second terminal of the second wake-up circuit.

7. The low-power mode control circuit according to claim 6, characterized in that, The first wake-up circuit includes: a first resistor, a first diode, and a second switch; The first end of the first resistor is connected to a third external power supply, and the second end of the first resistor is connected to the positive terminal of the first diode. The negative terminal of the first diode is connected to the first terminal of the second switch, the first terminal of the first wake-up circuit, and the second terminal of the first wake-up circuit. The second terminal of the second switch is grounded.

8. The low-power mode control circuit according to claim 6, characterized in that, The second wake-up circuit includes: a second resistor and a second diode; The first end of the second resistor is connected to the fourth external power supply, and the second end of the second resistor is connected to the positive terminal of the second diode and the first end of the second wake-up circuit. The negative terminal of the second diode is connected to the second terminal of the second wake-up circuit.

9. The low-power mode control circuit according to claim 5, characterized in that, The wake-up input terminal of the gate drive module is also used for high-voltage output or high-voltage PWM signal input.

10. The low-power mode control circuit according to claim 5, characterized in that, The power wake-up terminal of the main control module is also used to send control signals to the gate drive module; The wake-up output terminal of the gate drive module is also used to receive control signals from the main control module.

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