High-side power supply circuit, controller and vehicle

Abstract

The utility model discloses a high-side power supply circuit, a controller and a vehicle, the high-side power supply circuit comprises a same-phase driving unit and a reverse-phase driving unit, the same-phase driving unit inputs a normal-phase driving signal, the reverse-phase driving unit inputs a reverse-phase driving signal, and the phase difference between the normal-phase driving signal and the reverse-phase driving signal is 180 degrees, so that the high-side power supply circuit can be used for supplying power to the vehicle. When the in-phase driving unit conducts a path between the first power supply end and the power supply end of the load and supplies power to the load, the reverse-phase driving unit disconnects the path between the first power supply end and the power supply end of the load, and when the in-phase driving unit disconnects the path between the first power supply end and the power supply end of the load, the reverse-phase driving unit disconnects the path between the first power supply end and the power supply end of the load. And the anti-phase driving unit conducts a path between the first power supply end and the power supply end of the load to supply power to the load, so that the high-side power supply circuit continuously supplies power to the load, and the performance of the high-side power supply circuit is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile electronics, and in particular to a high-side power supply circuit, a controller and a vehicle. Background Art

[0002] In current automotive electronic designs, when the high-side power supply circuit in the vehicle controller provides power supply voltage to the load, a drive signal is provided to the high-side power supply circuit through a single-chip microcomputer. The drive signal provided by the single-chip microcomputer is a drive signal with a phase change, such as a PWM drive signal. The high-side power supply circuit supplies power to the load based on the drive signal.

[0003] The high-side power supply circuit provided in the related art cannot continuously provide the power supply voltage to the load when supplying power to the load based on the driving signal. Utility Model Content

[0004] The utility model provides a high-side power supply circuit, a controller and a vehicle, which are used to solve the problem in the prior art that the high-side power supply circuit cannot continuously provide a power supply voltage to a load.

[0005] In a first aspect, the utility model provides a high-side power supply circuit, comprising: a common-phase drive unit and an anti-phase drive unit;

[0006] The in-phase driving unit is electrically connected to the positive phase driving signal terminal, the first power supply terminal and the power supply terminal of the load, and the inverting driving unit is electrically connected to the inverting phase driving signal terminal, the first power supply terminal and the power supply terminal of the load;

[0007] The first power supply terminal is used to output a first power supply voltage;

[0008] The in-phase driving unit is configured to receive a positive-phase driving signal and the first power supply voltage, and to open or close a path between the first power supply terminal and the power supply terminal of the load;

[0009] The inverting driving unit is configured to receive an inverting driving signal and the first power supply voltage, and to connect or disconnect a path between the first power supply terminal and the power supply terminal of the load;

[0010] The positive-phase drive signal and the negative-phase drive signal differ in phase by 180 degrees. When the path between the first power supply terminal and the power supply terminal of the load is connected by the in-phase drive unit, the path between the first power supply terminal and the power supply terminal of the load is disconnected by the negative-phase drive unit. When the path between the first power supply terminal and the power supply terminal of the load is disconnected by the in-phase drive unit, the path between the first power supply terminal and the power supply terminal of the load is connected by the negative-phase drive unit.

[0011] In a possible implementation, the in-phase driving unit includes a first floating gate driving sub-unit, a first switching sub-unit, and a first backflow prevention sub-unit;

[0012] The first floating gate driver subunit is electrically connected to the positive phase drive signal terminal, the second power supply terminal, and the control terminal of the first on-off subunit, the first terminal of the first on-off subunit is electrically connected to the first power supply terminal, the second terminal of the first on-off subunit is electrically connected to the first terminal of the first backflow prevention subunit, and the second terminal of the first backflow prevention subunit is electrically connected to the power supply terminal of the load;

[0013] The second power supply terminal is used to output a second supply voltage;

[0014] The first floating gate driving sub-unit is configured to receive the positive phase driving signal and the second power supply voltage, and provide a first level signal or a second level signal to the first switching sub-unit;

[0015] The first on-off subunit is configured to receive the first level signal to connect the path between the first end of the first on-off subunit and the second end of the first on-off subunit, or receive the second level signal to disconnect the path between the first end of the first on-off subunit and the second end of the first on-off subunit;

[0016] The first anti-backflow subunit is configured to prevent the voltage at the second end of the first anti-backflow subunit from backflowing to the first end of the first anti-backflow subunit.

[0017] In a possible implementation, the first floating gate driver subunit includes a first floating gate driver chip, a first bootstrap capacitor, a first diode, and a first bootstrap capacitor charging module;

[0018] a gate output terminal of the first floating gate driver chip electrically connected to the control terminal of the first on-off unit, a drive signal input terminal of the first floating gate driver chip electrically connected to the positive phase drive signal terminal and the control terminal of the first bootstrap capacitor charging module, a first power supply terminal of the first floating gate driver chip electrically connected to the second power supply terminal and the anode of the first diode, a second power supply terminal of the first floating gate driver chip electrically connected to the cathode of the first diode and the first terminal of the first bootstrap capacitor, a floating ground terminal of the first floating gate driver chip electrically connected to the second terminal of the first bootstrap capacitor, the second terminal of the first on-off sub-unit, and the first terminal of the first bootstrap capacitor charging module, and a ground terminal of the first floating gate driver chip, a fault detection terminal of the first floating gate driver chip, and a fault reporting terminal of the first floating gate driver chip are all electrically connected to the ground terminal;

[0019] The second end of the first bootstrap capacitor charging module is electrically connected to the ground end;

[0020] The first bootstrap capacitor charging module is configured to receive the positive phase driving signal and connect or disconnect a path between the second end of the first bootstrap capacitor and the ground end.

[0021] In a possible implementation, the first bootstrap capacitor charging module includes: a first inverter, a second resistor, a third resistor, a fourth resistor, and a first transistor;

[0022] The input end of the first inverter is electrically connected to the positive phase drive signal end, and the output end of the first inverter is electrically connected to the first end of the second resistor;

[0023] The second end of the second resistor is electrically connected to the first end of the third resistor and the base of the first transistor;

[0024] The second end of the third resistor is electrically connected to the second end of the fourth resistor and the ground end;

[0025] The first end of the fourth resistor is electrically connected to the emitter of the first transistor;

[0026] The collector of the first transistor is electrically connected to the second end of the first switching sub-unit.

[0027] In a possible implementation, the first switching subunit includes a first resistor, a first capacitor, and a first switch tube;

[0028] A first end of the first resistor is electrically connected to a first end of the first capacitor, a control end of the first switch tube, and a gate output end of the first floating-gate driver chip; a second end of the first resistor is electrically connected to a second end of the first capacitor, a second end of the first switch tube, a floating ground end of the first floating-gate driver chip, and an emitter of the first transistor;

[0029] The first end of the first switch tube is electrically connected to the first power supply end.

[0030] In a possible implementation, the first anti-backflow subunit includes a second diode;

[0031] An anode of the second diode is electrically connected to the second end of the first switching subunit, and a cathode of the second diode is electrically connected to the power supply end of the load.

[0032] In a possible implementation, the inverting driving unit includes a second floating gate driving sub-unit, a second switching sub-unit, and a second backflow prevention sub-unit;

[0033] The second floating gate driver subunit is electrically connected to the inverting drive signal terminal, the second power supply terminal, and the control terminal of the second on-off subunit, the first terminal of the second on-off subunit is electrically connected to the first power supply terminal, the second terminal of the second on-off subunit is electrically connected to the first terminal of the second backflow prevention subunit, and the second terminal of the second backflow prevention subunit is electrically connected to the power supply terminal of the load;

[0034] The second power supply terminal is used to output a second supply voltage;

[0035] The second floating gate driving sub-unit is configured to receive the inverted driving signal and the second power supply voltage, and provide a third level signal or a fourth level signal to the second switching sub-unit;

[0036] the second on-off subunit is configured to receive the third level signal to connect the path between the first end of the second on-off subunit and the second end of the second on-off subunit, or receive the fourth level signal to disconnect the path between the first end of the second on-off subunit and the second end of the second on-off subunit;

[0037] The second anti-backflow subunit is configured to prevent the voltage at the second end of the second anti-backflow subunit from backflowing to the first end of the second anti-backflow subunit.

[0038] In a possible implementation, the second floating gate driver subunit includes a second floating gate driver chip, a second bootstrap capacitor, a third diode, and a second bootstrap capacitor charging module;

[0039] a gate output terminal of the second floating gate driver chip electrically connected to the control terminal of the second on-off unit, a drive signal input terminal of the second floating gate driver chip electrically connected to the inverted drive signal terminal and the control terminal of the second bootstrap capacitor charging module, a first power supply terminal of the second floating gate driver chip electrically connected to the second power supply terminal and the anode of the third diode, a second power supply terminal of the second floating gate driver chip electrically connected to the cathode of the third diode and the first terminal of the second bootstrap capacitor, a floating ground terminal of the second floating gate driver chip electrically connected to the second terminal of the second bootstrap capacitor, the second terminal of the second on-off sub-unit, and the first terminal of the second bootstrap capacitor charging module, and a ground terminal of the second floating gate driver chip, a fault detection terminal of the second floating gate driver chip, and a fault reporting terminal of the second floating gate driver chip are all electrically connected to the ground terminal;

[0040] The second end of the second bootstrap capacitor charging module is electrically connected to the ground end;

[0041] The second bootstrap capacitor charging module is configured to receive the inverse driving signal and connect or disconnect a path between the second end of the second bootstrap capacitor and the ground end.

[0042] In a second aspect, the present application further provides a controller comprising a high-side power supply circuit as described in any one of the first aspects.

[0043] In a third aspect, the present application also provides a vehicle comprising the controller as described in the second aspect.

[0044] The beneficial effects of the utility model are as follows:

[0045] The utility model provides a high-side power supply circuit, a controller and a vehicle, wherein the high-side power supply circuit includes a common-phase drive unit and an anti-phase drive unit, the common-phase drive unit inputs a positive-phase drive signal, the anti-phase drive unit inputs an anti-phase drive signal, and the phase difference between the positive-phase drive signal and the anti-phase drive signal is 180 degrees. Therefore, when the common-phase drive unit connects a path between a first power supply terminal and a power supply terminal of a load to supply power to the load, the anti-phase drive unit disconnects the path between the first power supply terminal and the power supply terminal of the load. When the common-phase drive unit disconnects the path between the first power supply terminal and the power supply terminal of the load, the anti-phase drive unit connects the path between the first power supply terminal and the power supply terminal of the load to supply power to the load, thereby enabling the high-side power supply circuit to continuously supply power to the load, thereby improving the performance of the high-side power supply circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0047] Figure 1 A schematic structural diagram of a high-side power supply circuit provided in an embodiment of the present utility model;

[0048] Figure 2 A schematic structural diagram of an in-phase drive unit provided by an embodiment of the present utility model;

[0049] Figure 3 A circuit diagram of an in-phase drive unit provided in an embodiment of the present utility model;

[0050] Figure 4 A schematic structural diagram of an inverting drive unit provided in an embodiment of the present utility model;

[0051] Figure 5 A circuit diagram of an inverting drive unit provided in an embodiment of the present utility model;

[0052] Figure 6 A schematic diagram of a high-side power supply circuit providing a power supply voltage to a load provided by an embodiment of the present utility model;

[0053] Figure 7 A schematic diagram of another high-side power supply circuit provided in an embodiment of the present utility model for providing a power supply voltage to a load;

[0054] Figure 8 A schematic structural diagram of a controller provided in an embodiment of the present utility model. DETAILED DESCRIPTION

[0055] To make the purpose, technical solutions, and advantages of the present invention more clearly apparent, the present invention will be further described in detail below with reference to the accompanying drawings. It is apparent that the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0056] In order to solve the problem in the related art that the high-side power supply circuit cannot continuously supply power to the load, an embodiment of the present invention provides a high-side power supply circuit, a controller and a vehicle, wherein the high-side power supply circuit includes a common-phase drive unit and an anti-phase drive unit, the common-phase drive unit inputs a positive-phase drive signal, and the anti-phase drive unit inputs an anti-phase drive signal, and the phase difference between the positive-phase drive signal and the anti-phase drive signal is 180 degrees. Therefore, when the common-phase drive unit connects the path between the first power supply terminal and the power supply terminal of the load to supply power to the load, the anti-phase drive unit disconnects the path between the first power supply terminal and the power supply terminal of the load. When the common-phase drive unit disconnects the path between the first power supply terminal and the power supply terminal of the load, the anti-phase drive unit connects the path between the first power supply terminal and the power supply terminal of the load to supply power to the load, thereby enabling the high-side power supply circuit to continuously supply power to the load, thereby improving the performance of the high-side power supply circuit.

[0057] The following describes in detail a high-side power supply circuit, a controller, and a vehicle provided by an embodiment of the present invention in conjunction with the accompanying drawings.

[0058] like Figure 1 , which is a structural diagram of a high-side power supply circuit provided by an embodiment of the present utility model, the high-side power supply circuit includes: an in-phase drive unit 11 and an inverting drive unit 12;

[0059] The in-phase driving unit 11 is electrically connected to the positive phase driving signal terminal, the first power supply terminal and the power supply terminal of the load, and the inverting driving unit 12 is electrically connected to the inverting phase driving signal terminal, the first power supply terminal and the power supply terminal of the load;

[0060] A first power supply terminal, used for outputting a first power supply voltage;

[0061] The in-phase driving unit 11 is used to receive the positive phase driving signal and the first power supply voltage 24V, and to open or close the path between the first power supply terminal and the power supply terminal of the load;

[0062] The inverting driving unit 12 is configured to receive an inverting driving signal and a first power supply voltage of 24V, and to disconnect or connect a path between the first power supply terminal and the power supply terminal of the load;

[0063] Among them, the phase difference between the positive phase drive signal and the negative phase drive signal is 180 degrees. When the path between the first power supply terminal and the power supply terminal of the load is connected through the in-phase drive unit 11, the path between the first power supply terminal and the power supply terminal of the load is disconnected through the negative phase drive unit 12. When the path between the first power supply terminal and the power supply terminal of the load is disconnected through the in-phase drive unit 11, the path between the first power supply terminal and the power supply terminal of the load is connected through the negative phase drive unit 12.

[0064] In one embodiment, if Figure 2 As shown, the in-phase driving unit 11 includes a first floating gate driving sub-unit 111, a first switching sub-unit 112 and a first anti-backflow sub-unit 113;

[0065] The first floating gate driver subunit 111 is electrically connected to the positive phase drive signal terminal, the second power supply terminal, and the control terminal of the first on-off subunit 112. The first terminal of the first on-off subunit 112 is electrically connected to the first power supply terminal. The second terminal of the first on-off subunit 112 is electrically connected to the first terminal of the first backflow prevention subunit 113. The second terminal of the first backflow prevention subunit 113 is electrically connected to the power supply terminal of the load.

[0066] A second power supply terminal is used to output a second power supply voltage of 12V;

[0067] The first floating gate driver subunit 111 is configured to receive a positive phase drive signal and a second power supply voltage, and provide a first level signal or a second level signal to the first switching subunit 112;

[0068] The first on-off subunit 112 is configured to receive a first level signal to connect a path between a first terminal of the first on-off subunit 112 and a second terminal of the first on-off subunit 112 , or receive a second level signal to disconnect a path between the first terminal of the first on-off subunit 112 and the second terminal of the first on-off subunit 112 ;

[0069] The first backflow prevention subunit 113 is configured to prevent the voltage at the second end of the first backflow prevention subunit 113 from backflowing to the first end of the first backflow prevention subunit 113 .

[0070] In an embodiment of the present application, when the path between the first end of the first on-off sub-unit 112 and the second end of the first on-off sub-unit 112 is connected, the first supply voltage 24V output by the first power supply end is supplied to the load through the first on-off sub-unit 112 and the first anti-backflow sub-unit 113. When the path between the first end of the first on-off sub-unit 112 and the second end of the first on-off sub-unit 112 is disconnected, the first power supply end stops supplying power to the load.

[0071] In specific implementation, Figure 3 As shown, the first floating gate driver subunit 111 includes a first floating gate driver chip U1, a first bootstrap capacitor C11, a first diode D1 and a first bootstrap capacitor charging module 1111;

[0072] The gate output terminal (HD terminal) of the first floating gate driver chip U1 is electrically connected to the control terminal of the first switching sub-unit 112. The drive signal input terminal (IN terminal) of the first floating gate driver chip U1 is electrically connected to the positive phase drive signal terminal and the control terminal of the first bootstrap capacitor charging module 1111. The first power supply terminal (VCC terminal) of the first floating gate driver chip U1 is electrically connected to the second power supply terminal and the anode of the first diode D1. The second power supply terminal (VB terminal) of the first floating gate driver chip U1 is electrically connected to the cathode of the first diode D1 and the first terminal of the first bootstrap capacitor C11. The floating ground terminal (VS terminal) of the first floating gate driver chip is electrically connected to the second terminal of the first bootstrap capacitor C11, the second terminal of the first switching sub-unit 112, and the first terminal of the first bootstrap capacitor charging module 1111. The ground terminal (COM terminal) of the first floating gate driver chip, the fault detection terminal (CS terminal) of the first floating gate driver chip, and the fault reporting terminal (NFAULT terminal) of the first floating gate driver chip are all electrically connected to the ground terminal.

[0073] The second end of the first bootstrap capacitor charging module 1111 is electrically connected to the ground end;

[0074] The first bootstrap capacitor charging module 1111 is configured to receive a positive phase driving signal and connect or disconnect a path between a first terminal of the first bootstrap capacitor C11 and a ground terminal.

[0075] In the embodiment of the present application, when the path between the first end of the first bootstrap capacitor charging module 1111 and the ground end is conductive, the second end of the first bootstrap capacitor C11 is electrically connected to the ground end through the first bootstrap capacitor charging module 1111, and the second supply voltage 12V output by the second power supply end charges the first bootstrap capacitor C11 through the first diode D1;

[0076] When the path between the first end of the first bootstrap capacitor charging module 1111 and the ground end is disconnected, since electrical energy is stored in the first bootstrap capacitor C11 and the first end of the first bootstrap capacitor C11 is electrically connected to the second power supply end (VB end) of the first floating gate driver chip U1, the first floating gate driver chip U1 provides a first level signal to the first on-off sub-unit 112, and the path between the first end of the first on-off sub-unit 112 and the second end of the first on-off sub-unit 112 is connected, and the first supply voltage output from the first power supply end supplies power to the load through the first on-off sub-unit 112 and the first backflow prevention sub-unit 113.

[0077] It should be noted that, in the embodiment of the present invention, the first power supply terminal (VCC terminal) of the first floating gate driver chip U1 is a 5V power supply terminal, and the second power supply terminal (VB terminal) of the first floating gate driver chip U1 is a 12V power supply terminal.

[0078] In specific implementation, Figure 3 As shown, the first bootstrap capacitor charging module 1111 includes: a first inverter A1, a second resistor R2, a third resistor R3, a fourth resistor R4 and a first transistor Q1;

[0079] The input end of the first inverter A1 is electrically connected to the positive phase drive signal end, and the output end of the first inverter A2 is electrically connected to the first end of the second resistor R2;

[0080] The second end of the second resistor R2 is electrically connected to the first end of the third resistor R3 and the base of the first transistor Q1;

[0081] The second end of the third resistor R3 is electrically connected to the second end of the fourth resistor R4 and the ground end;

[0082] A first end of the fourth resistor R4 is electrically connected to the emitter of the first transistor Q1;

[0083] The collector of the first transistor Q1 is electrically connected to the second end of the first switching sub-unit 112 .

[0084] like Figure 3 As shown, the first on-off subunit 112 includes a first resistor R1, a first capacitor C21 and a first switch tube M1;

[0085] A first end of the first resistor R1 is electrically connected to a first end of the first capacitor C21, a control end of the first switch M1, and a gate output end of the first floating-gate driver chip U1. A second end of the first resistor R1 is electrically connected to a second end of the first capacitor C21, a second end of the first switch M1, a floating ground end of the first floating-gate driver chip U1, and an emitter of the first transistor Q1.

[0086] A first end of the first switch tube M1 is electrically connected to the first power supply end.

[0087] like Figure 3 As shown, the first anti-backflow subunit 113 includes a second diode D2;

[0088] An anode of the second diode D2 is electrically connected to the second end of the first switching sub-unit 112 , and a cathode of the second diode D2 is electrically connected to the power supply end of the load.

[0089] In the embodiment of the present application, when the voltage at the gate output terminal of the first floating gate driver chip U1 is at a high level, that is, a first level signal, the first switch tube M1 is turned on; when the voltage at the gate output terminal of the first floating gate driver chip U1 is at a low level, that is, a second level signal, the first switch tube M1 is turned off.

[0090] The above is a description of the in-phase driving unit 11 , and the following is a description of the anti-phase driving unit 12 .

[0091] like Figure 4 As shown, the inverting driving unit 12 includes a second floating gate driving sub-unit 121, a second switching sub-unit 122 and a second anti-backflow sub-unit 123;

[0092] The second floating gate driver subunit 121 is electrically connected to the inverted drive signal terminal, the second power supply terminal, and the control terminal of the second on-off subunit 122. The first terminal of the second on-off subunit 122 is electrically connected to the first power supply terminal. The second terminal of the second on-off subunit 122 is electrically connected to the first terminal of the second backflow prevention subunit 123. The second terminal of the second backflow prevention subunit 123 is electrically connected to the power supply terminal of the load.

[0093] A second power supply terminal is used to output a second power supply voltage of 12V;

[0094] The second floating gate driver sub-unit 121 is configured to receive an inverted driving signal and a second power supply voltage 12V, and provide a third level signal or a fourth level signal to the second switching sub-unit 122;

[0095] The second on-off subunit 122 is configured to receive a third level signal to connect the first end of the second on-off subunit 122 and the second end of the second on-off subunit 122, or receive a fourth level signal to disconnect the first end of the second on-off subunit 122 and the second end of the second on-off subunit 122;

[0096] The second backflow prevention subunit 123 is configured to prevent the voltage at the second end of the second backflow prevention subunit 123 from backflowing to the first end of the second backflow prevention subunit 123 .

[0097] In an embodiment of the present application, when the path between the first end of the second on-off sub-unit 122 and the second end of the second on-off sub-unit 122 is connected, the first supply voltage 24V output by the first power supply end is supplied to the load through the second on-off sub-unit 122 and the second anti-backflow sub-unit 123. When the path between the first end of the second on-off sub-unit 122 and the second end of the second on-off sub-unit 122 is disconnected, the first power supply end stops supplying power to the load.

[0098] In a specific implementation, the second floating gate driver subunit 121 includes a second floating gate driver chip U2, a second bootstrap capacitor C12, a third diode D3 and a second bootstrap capacitor charging module 1211;

[0099] The gate output terminal (HD) of the second floating gate driver chip U2 is electrically connected to the control terminal of the second switching sub-unit 122. The drive signal input terminal (IN) of the second floating gate driver chip U2 is electrically connected to the inverted drive signal terminal and the control terminal of the second bootstrap capacitor charging module 1211. The first power supply terminal (VCC) of the second floating gate driver chip U2 is electrically connected to the second power supply terminal and the anode of the third diode D3. The second power supply terminal (VB) of the second floating gate driver chip U2 is electrically connected to the cathode of the third diode D3 and the first end of the second bootstrap capacitor C12. The floating ground terminal (VS) of the second floating gate driver chip U2 is electrically connected to the second end of the second bootstrap capacitor C12, the second end of the second switching sub-unit 122, and the first end of the second bootstrap capacitor charging module 123. The ground terminal (COM) of the second floating gate driver chip U2, the fault detection terminal (CS) of the second floating gate driver chip U2, and the fault reporting terminal (NFAULT) of the second floating gate driver chip U2 are all electrically connected to the ground terminal.

[0100] The second end of the second bootstrap capacitor charging module 1211 is electrically connected to the ground end;

[0101] The second bootstrap capacitor charging module 1211 is configured to receive an inverse driving signal and connect or disconnect a path between the second end of the second bootstrap capacitor C12 and the ground.

[0102] In the embodiment of the present application, when the path between the first end of the second bootstrap capacitor charging module 1211 and the ground end is conductive, the second end of the second bootstrap capacitor C12 is electrically connected to the ground end through the first bootstrap capacitor charging module 1211, and the second supply voltage 12V output by the second power supply end charges the second bootstrap capacitor C12 through the third diode D3;

[0103] When the path between the first end of the second bootstrap capacitor charging module 1211 and the ground end is disconnected, since electrical energy is stored in the second bootstrap capacitor C12 and the first end of the second bootstrap capacitor C12 is electrically connected to the second power supply end (VB end) of the second floating gate driver chip U2, the second floating gate driver chip U2 provides a third level signal to the second on-off sub-unit 122, and the path between the first end of the second on-off sub-unit 122 and the second end of the second on-off sub-unit 122 is connected, and the first supply voltage output from the first power supply end supplies power to the load through the second on-off sub-unit 122 and the second anti-backflow sub-unit 123.

[0104] It should be noted that, in the embodiment of the present invention, the first power supply terminal (VCC terminal) of the second floating gate driver chip U2 is a 5V power supply terminal, and the second power supply terminal (VB terminal) of the second floating gate driver chip U2 is a 12V power supply terminal.

[0105] In specific implementation, Figure 5 As shown, the second bootstrap capacitor charging module 1211 includes: a second inverter A2, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8 and a second transistor Q2;

[0106] The input terminal of the second inverter A2 is electrically connected to the inverted driving signal terminal, and the output terminal of the second inverter A2 is electrically connected to the first terminal of the sixth resistor R6;

[0107] The second end of the sixth resistor R6 is electrically connected to the first end of the seventh resistor R7 and the base of the second transistor Q2;

[0108] The second end of the seventh resistor R7 is electrically connected to the second end of the eighth resistor R8 and the ground end;

[0109] A first end of the eighth resistor R8 is electrically connected to the emitter of the second transistor Q2;

[0110] The collector of the second transistor Q2 is electrically connected to the second end of the second switching sub-unit 122 .

[0111] like Figure 3 As shown, the first on-off sub-unit 112 includes a fifth resistor R5, a second capacitor C22 and a second switch tube M2;

[0112] A first end of the fifth resistor R5 is electrically connected to the first end of the second capacitor C22, the control end of the second switch M2, and the gate output end of the second floating-gate driver chip U2. A second end of the fifth resistor R5 is electrically connected to the second end of the second capacitor C22, the second end of the second switch M2, the floating ground end of the second floating-gate driver chip U2, and the emitter of the second transistor Q2.

[0113] A first end of the second switch tube M2 is electrically connected to the first power supply end.

[0114] like Figure 3 As shown, the second anti-backflow subunit 123 includes a fourth diode D4;

[0115] An anode of the fourth diode D4 is electrically connected to the second end of the second switching sub-unit 122 , and a cathode of the fourth diode D4 is electrically connected to the power supply end of the load.

[0116] In the embodiment of the present application, when the voltage at the gate output terminal of the second floating gate driver chip U2 is at a high level, that is, a third level signal, the second switch tube M2 is turned on; when the voltage at the gate output terminal of the second floating gate driver chip U2 is at a low level, that is, a fourth level signal, the second switch tube M2 is turned off.

[0117] For ease of understanding, the embodiment of the present invention is described in detail below with reference to a circuit diagram of a complete high-side power supply circuit.

[0118] like Figure 6 As shown, it is a schematic diagram of a high-side power supply circuit provided by an embodiment of the present invention to provide a power supply voltage to a load. Specifically, when the drive signal is in the phase range of 0-180 degrees, the inverted drive signal is in the phase range of 181-360 degrees. At this time, the inverted drive signal passes through the second NOT gate A2, and the second NOT gate A2 outputs a high level. After the high level is divided by the sixth resistor R6 and the seventh resistor R7, the second transistor Q2 is driven to turn on. After the second transistor Q2 is turned on, the second end of the second bootstrap capacitor C12 is grounded through the second transistor Q2 and the eighth resistor R8, and the second supply voltage 12V output from the second power supply end charges the second bootstrap capacitor C12 through the third diode D3.

[0119] like Figure 7 FIG. 1 is a schematic diagram of another high-side power supply circuit provided by an embodiment of the present invention for providing a power supply voltage to a load. Specifically, when the drive signal is within the phase range of 181-360 degrees, the positive phase drive signal is within the phase range of 181-360 degrees. At this time, the positive phase drive signal passes through the first NOT gate A1, and the first NOT gate A1 outputs a high level. The high level, after voltage division by the second resistor R2 and the third resistor R3, drives the first transistor Q1 to turn on. After the first transistor Q1 is turned on, the second end of the first bootstrap capacitor C11 is grounded through the first transistor Q1 and the fourth resistor R4, and the second supply voltage 12V output from the second power supply end charges the first bootstrap capacitor C11 through the first diode D1.

[0120] Since the second bootstrap capacitor C12 is charged when the drive signal is in the phase range of 0-180 degrees, when the drive signal is in the phase range of 181-360 degrees, the second floating gate driver chip U2 drives the second switch tube M2 to turn on through the electric energy stored in the second bootstrap capacitor C12, and the first supply voltage 24V output by the first power supply terminal provides the supply voltage to the load through the second switch tube M2 and the fourth diode D4.

[0121] Since when the driving signal is in the phase range of 181-360 degrees, refer to Figure 7 , the first bootstrap capacitor C11 is charged, so when the drive signal is in the 0-180 degree phase range, refer to Figure 6 The first floating gate driver chip U1 drives the first switch tube M1 to turn on, and the first power supply voltage 24V output by the first power supply terminal provides a power supply voltage to the load through the first switch tube M1 and the second diode D2.

[0122] In the embodiment of the present invention, the phase of the positive-phase drive signal and the phase of the negative-phase drive signal differ by 180 degrees. When the positive-phase drive signal drives the first transistor Q1 to turn off after passing through the first inverter A1, since the first bootstrap capacitor C11 stores electrical energy, the first floating-gate driver chip drives the first switch tube M1 to turn on. The first supply voltage 24V output from the first power supply terminal supplies power to the load through the first switch tube M1 and the second diode D2. At this time, the negative-phase drive signal passes through the second inverter A2, drives the second transistor Q2 to turn on, and charges the first bootstrap capacitor C12 in the negative-phase drive unit.

[0123] When the negative-phase drive signal drives the second transistor Q2 to turn off after passing through the second inverter A2, the second bootstrap capacitor C11 stores electrical energy. Therefore, the second floating-gate driver chip drives the second switch tube M2 to turn on. The first supply voltage 24V output from the first power supply terminal supplies power to the load through the second switch tube M2 and the fourth diode D4. At this time, the positive-phase drive signal passes through the first inverter A1, driving the first transistor Q1 to turn on, thereby charging the first bootstrap capacitor C11 in the non-inverting drive unit.

[0124] Through the above, when the first switch tube in the in-phase drive unit is turned on and the load is powered by the in-phase drive unit, the inverting drive unit charges the second bootstrap capacitor; when the second switch tube in the inverting drive unit is turned on and the load is powered by the inverting drive unit, the non-phase drive unit powers the first bootstrap capacitor, so that the high-side power supply circuit can continuously power the load, thereby improving the performance of the high-side power supply circuit.

[0125] In a specific implementation, the positive-phase drive signal and the negative-phase drive signal are drive signals output by a single-chip microcomputer in the controller, with a voltage level of 0-5V and a phase difference of 180 degrees. When the positive-phase drive unit is driving, the negative-phase drive unit is not driving. The negative-phase drive unit charges the second bootstrap capacitor in the negative-phase drive unit in preparation for the next drive of the negative-phase drive unit. When the negative-phase drive unit is driving, the positive-phase drive unit is not driving. The positive-phase drive unit charges the first bootstrap capacitor in the positive-phase drive unit in preparation for the next drive of the positive-phase drive unit.

[0126] The second diode D2 and the fourth diode D4 in the present invention are used to prevent the voltage from flowing back to the other driving unit when one driving unit is driving. For example, the second diode D2 prevents the voltage from flowing back to the positive driving unit when the inverting driving unit is driving, and the fourth diode D4 prevents the voltage from flowing back to the inverting driving unit when the positive driving unit is driving.

[0127] The fourth resistor R4 and the seventh resistor R7 in the embodiment of the present invention are both current-limiting resistors. The fourth resistor R4 can limit the current flowing through the first transistor Q1 to 20 mA to prevent damage to the first transistor Q1. The seventh resistor R7 can limit the current flowing through the second transistor Q2 to 20 mA to prevent damage to the second transistor Q2.

[0128] It should be noted that the high-side power supply circuit can be a high-side power supply chip, and the bootstrap capacitor charging circuit can ensure that the driving pin of the high-side power supply chip can output stably under open circuit and capacitive load conditions.

[0129] The high-side power supply circuit provided by the utility model has a large driving current and is compatible with PWM driving.

[0130] Based on the same concept, an embodiment of the present invention also provides a controller, the principle of which is the same as the principle of the above-mentioned high-side power supply circuit in solving the technical problem. The implementation of the controller can refer to the implementation of the high-side power supply circuit, and the repeated parts will not be repeated.

[0131] like Figure 8 , which is a schematic diagram of the structure of a controller provided by an embodiment of the present invention, the controller includes a single chip microcomputer 81 and a high side power supply circuit 82 as described above;

[0132] The single chip microcomputer 81 is used to provide a positive phase driving signal and a negative phase driving signal to the high side power supply circuit 82 .

[0133] Specifically, the high-side driving circuit 82 continuously supplies power to the load based on the received positive-phase driving signal and negative-phase driving signal.

[0134] Based on the same concept, an embodiment of the present invention also provides a vehicle, the principle of which is the same as the principle of the above-mentioned controller in solving the technical problem. The implementation of the vehicle can refer to the implementation of the vehicle, and the repeated parts will not be repeated.

[0135] The vehicle provided by the present invention includes any of the above-mentioned controllers.

[0136] Those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A high-side power supply circuit, characterized in that: include: In-phase driving unit and anti-phase driving unit; The in-phase driving unit is electrically connected to the positive phase driving signal terminal, the first power supply terminal and the power supply terminal of the load, and the inverting driving unit is electrically connected to the inverting phase driving signal terminal, the first power supply terminal and the power supply terminal of the load; The first power supply terminal is used to output a first power supply voltage; The in-phase driving unit is configured to receive a positive-phase driving signal and the first power supply voltage, and to open or close a path between the first power supply terminal and the power supply terminal of the load; The inverting driving unit is configured to receive an inverting driving signal and the first power supply voltage, and to disconnect or connect a path between the first power supply terminal and the power supply terminal of the load; The positive-phase drive signal and the negative-phase drive signal differ in phase by 180 degrees. When the path between the first power supply terminal and the power supply terminal of the load is connected by the in-phase drive unit, the path between the first power supply terminal and the power supply terminal of the load is disconnected by the negative-phase drive unit. When the path between the first power supply terminal and the power supply terminal of the load is disconnected by the in-phase drive unit, the path between the first power supply terminal and the power supply terminal of the load is connected by the negative-phase drive unit.

2. The circuit according to claim 1, wherein: The in-phase driving unit includes a first floating gate driving sub-unit, a first switching sub-unit and a first anti-backflow sub-unit; The first floating gate driver subunit is electrically connected to the positive phase drive signal terminal, the second power supply terminal, and the control terminal of the first on-off subunit, the first terminal of the first on-off subunit is electrically connected to the first power supply terminal, the second terminal of the first on-off subunit is electrically connected to the first terminal of the first backflow prevention subunit, and the second terminal of the first backflow prevention subunit is electrically connected to the power supply terminal of the load; The second power supply terminal is used to output a second supply voltage; The first floating gate driving sub-unit is configured to receive the positive phase driving signal and the second power supply voltage, and provide a first level signal or a second level signal to the first switching sub-unit; The first on-off subunit is configured to receive the first level signal to connect the path between the first end of the first on-off subunit and the second end of the first on-off subunit, or receive the second level signal to disconnect the path between the first end of the first on-off subunit and the second end of the first on-off subunit; The first anti-backflow subunit is configured to prevent the voltage at the second end of the first anti-backflow subunit from backflowing to the first end of the first anti-backflow subunit.

3. The circuit according to claim 2, characterized in that The first floating gate driver subunit includes a first floating gate driver chip, a first bootstrap capacitor, a first diode and a first bootstrap capacitor charging module; a gate output terminal of the first floating gate driver chip electrically connected to the control terminal of the first switching sub-unit, a drive signal input terminal of the first floating gate driver chip electrically connected to the positive phase drive signal terminal and the control terminal of the first bootstrap capacitor charging module, a first power supply terminal of the first floating gate driver chip electrically connected to the second power supply terminal and the anode of the first diode, a second power supply terminal of the first floating gate driver chip electrically connected to the cathode of the first diode and the first terminal of the first bootstrap capacitor, a floating ground terminal of the first floating gate driver chip electrically connected to the second terminal of the first bootstrap capacitor, the second terminal of the first switching sub-unit, and the first terminal of the first bootstrap capacitor charging module, and a ground terminal of the first floating gate driver chip, a fault detection terminal of the first floating gate driver chip, and a fault reporting terminal of the first floating gate driver chip are all electrically connected to the ground terminal; The second end of the first bootstrap capacitor charging module is electrically connected to the ground end; The first bootstrap capacitor charging module is configured to receive the positive phase driving signal and connect or disconnect a path between the second end of the first bootstrap capacitor and the ground end.

4. The circuit according to claim 3, characterized in that The first bootstrap capacitor charging module includes: a first inverter, a second resistor, a third resistor, a fourth resistor and a first transistor; The input end of the first inverter is electrically connected to the positive phase drive signal end, and the output end of the first inverter is electrically connected to the first end of the second resistor; The second end of the second resistor is electrically connected to the first end of the third resistor and the base of the first transistor; The second end of the third resistor is electrically connected to the second end of the fourth resistor and the ground end; The first end of the fourth resistor is electrically connected to the emitter of the first transistor; The collector of the first transistor is electrically connected to the second end of the first switching sub-unit.

5. The circuit according to claim 4, characterized in that The first on-off subunit includes a first resistor, a first capacitor and a first switch tube; A first end of the first resistor is electrically connected to a first end of the first capacitor, a control end of the first switch tube, and a gate output end of the first floating-gate driver chip; a second end of the first resistor is electrically connected to a second end of the first capacitor, a second end of the first switch tube, a floating ground end of the first floating-gate driver chip, and an emitter of the first transistor; The first end of the first switch tube is electrically connected to the first power supply end.

6. The circuit according to claim 2, characterized in that The first anti-backflow subunit includes a second diode; An anode of the second diode is electrically connected to the second end of the first switching subunit, and a cathode of the second diode is electrically connected to the power supply end of the load.

7. The circuit according to claim 1, wherein: The inverting driving unit includes a second floating gate driving sub-unit, a second switching sub-unit and a second anti-backflow sub-unit; The second floating gate driver subunit is electrically connected to the inverting drive signal terminal, the second power supply terminal, and the control terminal of the second on-off subunit, the first terminal of the second on-off subunit is electrically connected to the first power supply terminal, the second terminal of the second on-off subunit is electrically connected to the first terminal of the second backflow prevention subunit, and the second terminal of the second backflow prevention subunit is electrically connected to the power supply terminal of the load; The second power supply terminal is used to output a second supply voltage; The second floating gate driving sub-unit is configured to receive the inverted driving signal and the second power supply voltage, and provide a third level signal or a fourth level signal to the second switching sub-unit; the second on-off subunit is configured to receive the third level signal to connect the path between the first end of the second on-off subunit and the second end of the second on-off subunit, or receive the fourth level signal to disconnect the path between the first end of the second on-off subunit and the second end of the second on-off subunit; The second anti-backflow subunit is configured to prevent the voltage at the second end of the second anti-backflow subunit from backflowing to the first end of the second anti-backflow subunit.

8. The circuit according to claim 7, characterized in that The second floating gate driver subunit includes a second floating gate driver chip, a second bootstrap capacitor, a third diode and a second bootstrap capacitor charging module; a gate output terminal of the second floating gate driver chip electrically connected to the control terminal of the second on-off sub-unit, a drive signal input terminal of the second floating gate driver chip electrically connected to the inverted drive signal terminal and the control terminal of the second bootstrap capacitor charging module, a first power supply terminal of the second floating gate driver chip electrically connected to the second power supply terminal and the anode of the third diode, a second power supply terminal of the second floating gate driver chip electrically connected to the cathode of the third diode and the first terminal of the second bootstrap capacitor, a floating ground terminal of the second floating gate driver chip electrically connected to the second terminal of the second bootstrap capacitor, the second terminal of the second on-off sub-unit, and the first terminal of the second bootstrap capacitor charging module, and a ground terminal of the second floating gate driver chip, a fault detection terminal of the second floating gate driver chip, and a fault reporting terminal of the second floating gate driver chip are all electrically connected to the ground terminal; The second end of the second bootstrap capacitor charging module is electrically connected to the ground end; The second bootstrap capacitor charging module is configured to receive the inverse driving signal and connect or disconnect a path between the second end of the second bootstrap capacitor and the ground end.

9. A controller, characterized in that: The invention comprises the high-side power supply circuit as claimed in any one of claims 1 to 8.

10. A vehicle, characterized in that: Comprising the controller as claimed in claim 9.

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