CN110752790A

CN110752790A - Drive IC circuit of intelligent power module, intelligent power module and air conditioner

Info

Publication number: CN110752790A
Application number: CN201810832530.0A
Authority: CN
Inventors: 李叶生; 冯宇翔
Original assignee: Midea Group Co Ltd; Guangdong Midea Refrigeration Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2018-07-24
Filing date: 2018-07-24
Publication date: 2020-02-04

Abstract

The invention discloses a driving IC circuit of an intelligent power module, the intelligent power module and an air conditioner, wherein the driving IC circuit of the intelligent power module comprises a working voltage input end, an inversion logic buffer circuit, an upper bridge driving circuit, a lower bridge driving circuit, a PFC logic buffer circuit, a PFC driving circuit, a first voltage regulation control input end, a second voltage regulation control input end, a first voltage regulation module and a second voltage regulation module; the first voltage regulating module is used for boosting or reducing the voltage input by the working voltage input end according to the signal of the first voltage regulating control input end; the second voltage regulating module is used for boosting or reducing the voltage input by the working voltage input end according to the signal of the second voltage regulating control input end, or outputting the voltage of the working voltage input end to the PFC logic buffer circuit and the PFC driving circuit. The invention solves the problem that the drive IC of the existing intelligent power module can not directly drive the SiC-based power switch device.

Description

Drive IC circuit of intelligent power module, intelligent power module and air conditioner

Technical Field

The invention relates to the field of intelligent power modules, in particular to a driving IC circuit of an intelligent power module, the intelligent power module and an air conditioner.

Background

An intelligent Power module, i.e., ipm (intelligent Power module), is a Power driving product combining Power electronics and integrated circuit technology. The intelligent power module integrates a power switch device and a high-voltage driving circuit and is internally provided with fault detection circuits such as overvoltage, overcurrent and overheat. The intelligent power module receives a control signal of the MCU to drive a subsequent circuit to work on one hand, and sends a state detection signal of the system back to the MCU on the other hand. Compared with the traditional discrete scheme, the intelligent power module wins a bigger and bigger market with the advantages of high integration degree, high reliability and the like, is particularly suitable for a frequency converter of a driving motor and various inverter power supplies, and is an ideal power electronic device for variable-frequency speed regulation, metallurgical machinery, electric traction, servo drive and variable-frequency household appliances.

The power switch device in the existing intelligent power module is a Si-based power switch device, and people have matured research on the Si-based power switch device, and the performance of the Si-based power switch device is about to approach the limit of material properties, so that the prior art is difficult to greatly improve the overall performance of the intelligent power module through the ways of structure innovation, manufacturing process improvement and the like of the Si-based power switch device. The third generation semiconductor (namely, the wide bandgap semiconductor power device) represented by the SiC-based power switch device has the advantages of high breakdown voltage, high power density, high output power, high working frequency, suitability for working at high temperature and the like, for example, the SiC-based MOSFET has very high blocking voltage, and has no trailing current similar to a Si-based IGBT tube, so that the dynamic loss of the SiC-based MOSFET is very low; and the diode of SiC material also has very low switching losses; meanwhile, the SiC material has thermal conductivity three times that of the Si material, so that the IPM module based on the SiC material has better working temperature and good reliability. In the high voltage power market, SiC-based power switching devices (such as SiC-based MOSFET transistors) are considered as perfect replacements for Si-based IGBT transistors.

However, Si-based power switches (e.g., Si-based MOSFET and Si-based IGBT) are usually suitable for operating at a driving voltage of 12-15V, and therefore, the driving voltage VDD of the smart power module in a variable frequency household appliance (e.g., a variable frequency air conditioner) is usually set to 15V, i.e., the gate driving signal (high level) of the Si-based power switch in the smart power module is 15V. However, the SiC-based power switching device (such as a SiC-based MOSFET transistor) is more suitable for operating at a driving voltage of 18-20V, so that a driving IC of the Si-based power switching device (also called a driving IC of an intelligent power module) in the existing intelligent power module is not suitable for directly driving the SiC-based power switching device. In addition, in most cases, the intelligent power module may have both a SiC-based power switching device and a Si-based power switching device, for example, a PFC switching tube in the intelligent power module generally uses the SiC-based power switching device to replace an original Si-based power switching device, so as to improve a power correction factor and further improve a power utilization rate, while an inverter device (i.e., an upper bridge arm switching tube and a lower bridge arm switching tube) in the intelligent power module still uses the Si-based power switching device, if the two devices use the same driving voltage of the Si-based power switching device, the performance of the SiC-based power switching device may not be effectively exerted.

Disclosure of Invention

The invention mainly aims to provide a driving IC circuit of an intelligent power module, and aims to solve the problem that the driving IC of the existing intelligent power module cannot directly drive a SiC-based power switch device.

In order to achieve the above object, the present invention provides a driving IC circuit of an intelligent power module, wherein the driving IC circuit includes a working voltage input terminal, an inverter logic buffer circuit, an upper bridge driving circuit, a lower bridge driving circuit, a PFC logic buffer circuit, a PFC driving circuit, a first voltage regulation control input terminal, a second voltage regulation control input terminal, a first voltage regulation module, and a second voltage regulation module; wherein:

the first voltage regulating control input end is used for inputting a first voltage regulating control signal;

the first voltage regulating module is used for boosting or reducing the voltage input by the working voltage input end according to the first voltage regulating control signal and providing driving input voltage for the inverter logic buffer circuit, the upper bridge driving circuit and the lower bridge driving circuit; or the voltage input by the working voltage input end is directly output to the driving voltage input ends of the inversion logic buffer circuit, the upper bridge driving circuit and the lower bridge driving circuit;

the second voltage regulation control input end is used for inputting a second voltage regulation control signal;

the second voltage regulating module is configured to perform voltage boosting or voltage dropping processing on the voltage input by the working voltage input end according to the second voltage regulating control signal, and provide driving input voltage for the PFC logic buffer circuit and the PFC driving circuit; or the voltage input by the working voltage input end is directly output to the PFC logic buffer circuit and the driving voltage input end of the PFC driving circuit.

Preferably, the input end of the first voltage regulating module is connected with the working voltage input end, the control end of the first voltage regulating module is connected with the first voltage regulating control input end, and the output end of the first voltage regulating module is respectively connected with the driving voltage input ends of the inversion logic buffer circuit, the upper bridge driving circuit and the lower bridge driving circuit; the input end of the second voltage regulating module is connected with the working voltage input end, the control end of the second voltage regulating module is connected with the second voltage regulating control input end, and the output end of the second voltage regulating module is respectively connected with the driving voltage input ends of the PFC logic buffer circuit and the PFC driving circuit; the output end of the inverter logic buffer circuit is connected with the input end of the upper bridge driving circuit and the input end of the lower bridge driving circuit respectively, and the output end of the PFC logic buffer circuit is connected with the input end of the PFC driving circuit.

Preferably, first pressure regulating module includes first pressure boost module, first voltage reduction module and first analog switch, first pressure boost module with the input of first pressure reduction module with the operating voltage input is connected, first pressure boost module's output with first analog switch's first input is connected, first pressure reduction module's output with first analog switch's second input is connected, first analog switch's third input directly with the operating voltage input is connected, first analog switch's common port respectively with contravariant logic buffer circuit, upper bridge drive circuit and lower bridge drive circuit's drive voltage input is connected, first analog switch's control end with first pressure regulating control input connects.

Preferably, the second voltage regulation module includes a second voltage boosting module, a second voltage reducing module and a second analog switch, the second voltage boosting module and the input end of the second voltage reducing module are connected to the working voltage input end, the output end of the second voltage boosting module is connected to the first input end of the second analog switch, the output end of the second voltage reducing module is connected to the second input end of the second analog switch, the third input end of the second analog switch is directly connected to the working voltage input end, the common end of the second analog switch is respectively connected to the PFC logic buffer circuit and the driving voltage input end of the PFC driving circuit, and the control end of the second analog switch is connected to the second voltage regulation control input end.

In addition, in order to achieve the above object, the present invention further provides a driving IC circuit of an intelligent power module, wherein the driving IC circuit includes a working voltage input terminal, an inverter logic buffer circuit, an upper bridge driving circuit, a lower bridge driving circuit, a PFC logic buffer circuit, a PFC driving circuit, a voltage regulation control input terminal, and a voltage regulation module; wherein:

the voltage regulation control input end is used for inputting voltage regulation control signals;

the voltage regulating module is used for regulating the voltage input by the working voltage input end according to the voltage regulating control signal input by the voltage regulating control input end, and providing driving input voltage for the inverter logic buffer circuit, the upper bridge driving circuit, the lower bridge driving circuit, the PFC logic buffer circuit and the PFC driving circuit; or the voltage input by the working voltage input end is directly output to the driving voltage input ends of the inversion logic buffer circuit, the upper bridge driving circuit, the lower bridge driving circuit, the PFC logic buffer circuit and the PFC driving circuit.

Preferably, the input end of the voltage regulating module is connected with the working voltage input end, the control end of the voltage regulating module is connected with the voltage regulating control input end, and the output end of the voltage regulating module is respectively connected with the driving voltage input ends of the inverter logic buffer circuit, the upper bridge driving circuit, the lower bridge driving circuit, the PFC logic buffer circuit and the PFC driving circuit; the output end of the inverter logic buffer circuit is connected with the input end of the upper bridge driving circuit and the input end of the lower bridge driving circuit respectively, and the output end of the PFC logic buffer circuit is also connected with the input end of the PFC driving circuit.

Preferably, the voltage regulation module includes step-down module and analog switch, step-down module's input with the operating voltage input is connected, step-down module's output with analog switch's first input is connected, analog switch's second input directly with the operating voltage input is connected, analog switch's common port respectively with contravariant logic buffer circuit, upper bridge drive circuit, lower bridge drive circuit, PFC logic buffer circuit and PFC drive circuit's drive voltage input is connected, analog switch's control end with the voltage regulation control input is connected.

Preferably, the voltage regulation module includes boost module and analog switch, boost module's input with the operating voltage input is connected, boost module's output with analog switch's first input is connected, analog switch's second input directly with the operating voltage input is connected, analog switch's common port respectively with contravariant logic buffer circuit, upper bridge drive circuit, lower bridge drive circuit, PFC logic buffer circuit and PFC drive circuit's drive voltage input is connected, analog switch's control end with the voltage regulation control input is connected.

In addition, in order to achieve the above object, the present invention further provides an intelligent power module, where the intelligent power module includes a low-voltage power supply input end, a first voltage regulating end, a second voltage regulating end, an upper bridge arm control input end, a lower bridge arm control input end, a PFC control input end, a plurality of resistors, a first upper bridge arm switching tube, a second upper bridge arm switching tube, a third upper bridge arm switching tube, a first lower bridge arm switching tube, a second lower bridge arm switching tube, a third lower bridge arm switching tube, a PFC switching tube, and the above-mentioned driving IC circuit of the intelligent power module; wherein:

the input end of the low-voltage area power supply is connected with the working voltage input end of the drive IC circuit, the first voltage regulating end is connected with the first voltage regulating control input end of the drive IC circuit, the second voltage regulating end is connected with the second voltage regulating control input end of the drive IC circuit, the upper bridge arm control input end is connected with the upper bridge control input end of the drive IC circuit, the lower bridge arm control input end is connected with the lower bridge control input end of the drive IC circuit, and the PFC control input end is connected with the PFC control input end of the drive IC circuit; a first output end of an upper bridge driving circuit in the driving IC circuit is connected with a control end of the first upper bridge arm switching tube through a resistor, a second output end of the upper bridge driving circuit is connected with a control end of the second upper bridge arm switching tube through a resistor, and a third output end of the upper bridge driving circuit is connected with a control end of the third upper bridge arm switching tube through a resistor; a first output end of a lower bridge driving circuit in the driving IC circuit is connected with a control end of the first lower bridge arm switching tube through a resistor, a second output end of the lower bridge driving circuit is connected with a control end of the second lower bridge arm switching tube through a resistor, and a third output end of the lower bridge driving circuit is connected with a control end of the third lower bridge arm switching tube through a resistor; the output end of a PFC driving circuit in the driving IC circuit is connected with the control end of the PFC switching tube through the resistor;

the first upper bridge arm switching tube, the second upper bridge arm switching tube, the third upper bridge arm switching tube, the first lower bridge arm switching tube, the second lower bridge arm switching tube, the third lower bridge arm switching tube and the PFC switching tube are Si-based IGBT tubes or SiC-based MOSFET tubes.

In addition, in order to achieve the above object, the present invention further provides an intelligent power module, which includes a low-voltage power supply input end, a voltage regulating end, an upper bridge arm control input end, a lower bridge arm control input end, a PFC control input end, a plurality of resistors, a first upper bridge arm switching tube, a second upper bridge arm switching tube, a third upper bridge arm switching tube, a first lower bridge arm switching tube, a second lower bridge arm switching tube, a third lower bridge arm switching tube, a PFC switching tube, and the above driving IC circuit of the intelligent power module; wherein:

the input end of the low-voltage area power supply is connected with the working voltage input end of the drive IC circuit, the voltage regulating end is connected with the voltage regulating control input end of the drive IC circuit, the upper bridge arm control input end is connected with the upper bridge control input end of the drive IC circuit, the lower bridge arm control input end is connected with the lower bridge control input end of the drive IC circuit, and the PFC control input end is connected with the PFC input end of the drive IC circuit; a first output end of an upper bridge driving circuit in the driving IC circuit is connected with a control end of the first upper bridge arm switching tube through a resistor, a second output end of the upper bridge driving circuit is connected with a control end of the second upper bridge arm switching tube through a resistor, and a third output end of the upper bridge driving circuit is connected with a control end of the third upper bridge arm switching tube through a resistor; a first output end of a lower bridge driving circuit in the driving IC circuit is connected with a control end of the first lower bridge arm switching tube through a resistor, a second output end of the lower bridge driving circuit is connected with a control end of the second lower bridge arm switching tube through a resistor, and a third output end of the lower bridge driving circuit is connected with a control end of the third lower bridge arm switching tube through a resistor; the output end of a PFC driving circuit in the driving IC circuit is connected with the control end of the PFC switching tube through the resistor;

the first upper bridge arm switching tube, the second upper bridge arm switching tube, the third upper bridge arm switching tube, the first lower bridge arm switching tube, the second lower bridge arm switching tube, the third lower bridge arm switching tube and the PFC switching tube are Si-based IGBT tubes, or the first upper bridge arm switching tube, the second upper bridge arm switching tube, the third upper bridge arm switching tube, the first lower bridge arm switching tube, the second lower bridge arm switching tube, the third lower bridge arm switching tube and the PFC switching tube are SiC-based MOSFET tubes.

In addition, in order to achieve the above object, the present invention further provides an air conditioner, which includes the intelligent power module as described above.

Compared with the drive IC circuit of the intelligent power module in the prior art, the drive IC circuit of the intelligent power module of the invention is additionally provided with the first voltage regulation control input end, the second voltage regulation control input end, the first voltage regulation module and the second voltage regulation module, therefore, the driving IC circuit of the intelligent power module can control the output voltage of the driving IC circuit according to the types (SiC-based power switch device or Si-based power switch device) of the upper bridge arm switch tube, the lower bridge arm switch tube and the PFC switch tube in the intelligent power module and the voltage input by the working voltage input end, corresponding voltage regulating control signals are input into the first voltage regulating control input end and the second voltage regulating control input end, the purpose of simultaneously providing proper driving voltage for the SiC-based power switch device and the Si-based power switch device in the intelligent power module can be realized, therefore, the problem that the drive IC of the existing intelligent power module can not directly drive the SiC-based power switch device is solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic diagram of a first embodiment of a driving IC circuit of an intelligent power module according to the present invention;

fig. 2 is a schematic structural diagram of the first voltage regulating module in the first embodiment of the driving IC circuit of the intelligent power module according to the present invention;

fig. 3 is a schematic structural diagram of the second voltage regulating module in the first embodiment of the driving IC circuit of the intelligent power module according to the present invention;

FIG. 4 is a circuit diagram of a second embodiment of a driving IC circuit of the smart power module according to the present invention;

fig. 5 is a schematic structural diagram of an embodiment of the voltage regulating module in a second embodiment of a driving IC circuit of the intelligent power module according to the present invention;

fig. 6 is a schematic structural diagram of another embodiment of the voltage regulating module in the second embodiment of the driving IC circuit of the intelligent power module according to the present invention;

FIG. 7 is a schematic structural diagram of a first embodiment of a smart power module according to the present invention;

fig. 8 is a schematic structural diagram of a second embodiment of the smart power module according to the present invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention provides a driving IC circuit 100 of an intelligent power module, which is used for solving the problem that the driving IC of the existing intelligent power module can not directly drive a SiC-based power switch device.

Fig. 1 is a schematic structural diagram of a first embodiment of a driving IC circuit of an intelligent power module according to the present invention, and referring to fig. 1, in this embodiment, the driving IC circuit 100 of the intelligent power module includes a working voltage input terminal VDD0, an inverter logic buffer circuit 101, an upper bridge driving circuit 102, a lower bridge driving circuit 103, a PFC logic buffer circuit 104, a PFC driving circuit 105, a first voltage regulation control input terminal RS1, a second voltage regulation control input terminal RS2, a first voltage regulation module 106, and a second voltage regulation module 107.

The first voltage regulation control input end RS1 is configured to input a first voltage regulation control signal;

the first voltage regulation module 106 is configured to perform voltage boosting or voltage dropping processing on the voltage input by the working voltage input terminal VDD0 according to the first voltage regulation control signal input by the first voltage regulation control input terminal RS1, and provide driving input voltages for the inverter logic buffer circuit 101, the upper bridge driving circuit 102, and the lower bridge driving circuit 103; or the voltage input by the working voltage input terminal VDD0 is directly output to the driving voltage input terminals of the inverter logic buffer circuit 101, the upper bridge driving circuit 102 and the lower bridge driving circuit 103, at this time, the driving voltage of the driving voltage input terminals of the inverter logic buffer circuit 101, the upper bridge driving circuit 102 and the lower bridge driving circuit 103 is equal to the voltage input by the working voltage input terminal VDD 0;

the second voltage regulation control input end RS2 is used for inputting a second voltage regulation control signal;

the second voltage regulating module 107 is configured to boost or buck the voltage input by the working voltage input terminal VDD0 according to the second voltage regulating control signal input by the second voltage regulating control input terminal RS2, so as to provide a driving input voltage for the PFC logic buffer circuit 104 and the PFC driving circuit 105; or the voltage input by the working voltage input terminal VDD0 is directly output to the driving voltage input terminals of the PFC logic buffer circuit 104 and the PFC driving circuit 105, where the driving voltage input terminals of the PFC logic buffer circuit 104 and the PFC driving circuit 105 is equal to the voltage input by the working voltage input terminal VDD 0.

In this embodiment, an input end of the first voltage regulating module 106 is connected to the working voltage input end VDD0, a control end of the first voltage regulating module 106 is connected to the first voltage regulating control input end RS1, and an output end of the first voltage regulating module 106 is connected to driving voltage input ends of the inverter logic buffer circuit 101, the upper bridge driving circuit 102, and the lower bridge driving circuit 103, respectively; the input end of the second voltage regulating module 107 is connected to the working voltage input end VDD0, the control end of the second voltage regulating module 107 is connected to the second voltage regulating control input end RS2, and the output end of the second voltage regulating module 107 is connected to the driving voltage input ends of the PFC logic buffer circuit 104 and the PFC driving circuit 105, respectively; in this embodiment, the output end of the inverter logic buffer circuit 101 is connected to the input end of the upper bridge driving circuit 102 and the input end of the lower bridge driving circuit 103, respectively, and the output end of the PFC logic buffer circuit 104 is connected to the input end of the PFC driving circuit 105. IN the drawings, IN1, IN2, and IN3 are upper bridge control input terminals of the driving IC circuit 100 of the intelligent power module of this embodiment, IN4, IN5, and IN6 are lower bridge control input terminals of the driving IC circuit 100 of the intelligent power module of this embodiment, and IN7 is a PFC input terminal of the driving IC circuit 100 of the intelligent power module of this embodiment, where IN1, IN2, IN3, IN4, IN5, and IN6 are connected to the inverter logic buffer circuit 101, and IN7 is connected to the PFC logic buffer circuit. HO1 is a first output terminal of the upper bridge driver circuit 102, HO2 is a second output terminal of the upper bridge driver circuit 102, HO3 is a third output terminal of the upper bridge driver circuit 102, LO1 is a first output terminal of the lower bridge driver circuit 103, LO2 is a second output terminal of the lower bridge driver circuit 103, LO3 is a third output terminal of the lower bridge driver circuit 103, and PFCO is an output terminal of the PFC driver circuit 105, wherein the first output terminal HO1 of the upper bridge driver circuit 102, the second output terminal HO2 of the upper bridge driver circuit 102, and the third output terminal HO3 of the upper bridge driver circuit 102 are respectively connected to control terminals of corresponding upper bridge arm switches (not shown) in the smart power module, the first output terminal LO1 of the lower bridge driver circuit 103, the second output terminal HO2 of the lower bridge driver circuit 103, and the third output terminal HO3 of the lower bridge driver circuit 103 are respectively connected to corresponding upper bridge arm switches (not shown in the smart power module) Shown), and an output end PFCO of the PFC driving circuit 105 is connected to a control end of a PFC switching tube (not shown) in the intelligent power module.

Fig. 2 is a schematic structural diagram of the first voltage regulating module in the first embodiment of the driving IC circuit of the intelligent power module of the present invention, and referring to fig. 1 and fig. 2 together, in this embodiment, the first voltage regulating module 106 includes a first voltage boosting module 1061, a first voltage dropping module 1062, and a first analog switch 1063. Wherein, the input ends of the first voltage boosting module 1061 and the first voltage dropping module 1062 are connected to the working voltage input end VDD0, the output end of the first voltage boosting module 1061 is connected to a first input end (corresponding to the end labeled with 1 in the first analog switch 1063) of the first analog switch 1063, the output end of the first voltage dropping module 1062 is connected to a second input end (corresponding to the end labeled with 2 in the first analog switch 1063) of the first analog switch 1063, the third input end (corresponding to the end labeled with 0 in the first analog switch 1063) of the first analog switch 1063 is directly connected to the working voltage input end VDD0, the common end of the first analog switch 1063 is respectively connected to the driving voltage input ends of the inverter logic buffer circuit 101, the upper bridge driving circuit 102 and the lower bridge driving circuit 103, and the voltage of the common end of the first analog switch 1063 is 1, in this embodiment, the control end of the first analog switch 1063 is connected to the first voltage-regulating control input end RS 1.

Fig. 3 is a schematic structural diagram of the second voltage regulating module in the first embodiment of the driving IC circuit of the smart power module of the present invention, and referring to fig. 1 and 3 together, in this embodiment, the second voltage regulating module 107 includes a second voltage boosting module 1071, a second voltage dropping module 1072 and a second analog switch 1073, input ends of the second voltage boosting module 1071 and the second voltage dropping module 1072 are connected to the operating voltage input end VDD0, an output end of the second voltage boosting module 1071 is connected to a first input end of the second analog switch 1073 (corresponding to the end numbered 1 in the second analog switch 1073), an output end of the second voltage dropping module 1072 is connected to a second input end of the second analog switch 1073 (corresponding to the end numbered 2 in the second analog switch 1073), a third input end of the second analog switch 1073 (corresponding to the end numbered 0 in the second analog switch 1073) is directly connected to the operating voltage input end 0, the common terminal of the second analog switch 1073 is connected to the driving voltage input terminals of the PFC logic buffer circuit 104 and the PFC driving circuit 105, respectively, the voltage of the common terminal of the second analog switch 1073 is VDD1, and in this embodiment, the control terminal of the second analog switch 1073 is connected to the second voltage regulation control input terminal RS 2. In this embodiment, the voltage at the working voltage input terminal is 15V or 20V.

The driving IC circuit 100 of the intelligent power module of this embodiment is provided with the first voltage regulation module 106 and the second voltage regulation module 107, so that a user can input different voltage regulation control signals to the first voltage regulation control input terminal RS1 and the second voltage regulation control input terminal RS2 according to different types of power switching devices (Si-based power switching devices or SiC-based power switching devices) in the intelligent power module, so that the first voltage regulation module 106 and the second voltage regulation module 107 regulate (boost or step-down) the voltage input by the working voltage input terminal VDD0, thereby obtaining driving voltage signals suitable for different types of power switching devices. Specifically, in this embodiment, the first voltage regulating module 106 regulates the voltage input from the working voltage input terminal VDD0 to be the driving voltage VDD1, and outputs the driving voltage VDD1 to the driving voltage input terminals of the inverter logic buffer circuit 101, the upper bridge driving circuit 102, and the lower bridge driving circuit 103; in this embodiment, the second voltage regulating module 107 regulates the voltage input from the working voltage input terminal VDD0 to the driving voltage VDD2, and outputs the driving voltage VDD2 to the driving voltage input terminals of the PFC logic buffer circuit 104 and the PFC driving circuit 105. In this embodiment, the first voltage regulating module 106 and the second voltage regulating module 107 may implement a voltage boosting function and may also implement a voltage reducing function.

Specifically, in this embodiment, if the voltage of the working voltage input end VDD0 is 15V, and the upper arm switching tube and the lower arm switching tube in the intelligent power module are Si-based power switching devices (e.g., Si-based IGBT tubes), and the PFC switching tube in the intelligent power module is a SiC-based power switching device (e.g., SiC-based MOSFET tube), this embodiment may enable the first analog switch 1063 in the first voltage regulation module 106 to be pointed to the end with the label 0 by controlling the first voltage regulation control signal at the first voltage regulation control input end RS1, even if the first voltage regulation module 106 directly outputs 15V driving voltage to the driving voltage input ends of the inverter logic buffer circuit 101, the upper bridge driving circuit 102, and the lower bridge driving circuit 103, and further to the upper arm switching tube (Si-based power switching device) connected to the output end of the upper bridge driving circuit 102 and the lower arm switching tube connected to the output end of the lower bridge driving circuit 103 (Si-based power switching device) provides a driving voltage of 15V; meanwhile, in this embodiment, by controlling a second voltage regulation control signal of the second voltage regulation control input terminal RS2, the second analog switch 1073 in the second voltage regulation module 107 is driven to the terminal with the reference numeral 1, so that the second voltage boost module 1071 in the second voltage regulation module 107 performs a voltage boost process on the input 15V voltage, and boosts the 15V voltage to a voltage of 20V suitable for driving the PFC switching tube (SiC-based power switching device) to operate;

in this embodiment, if the voltage of the working voltage input end VDD0 is 15V and the upper arm switch tube, the lower arm switch tube and the PFC switch tube in the intelligent power module are Si-based power switch devices, in this embodiment, the first voltage regulation control signal of the first voltage regulation control input end RS1 is controlled to make the first analog switch 1063 in the first voltage regulation module 106 hit the end with the label of 0, and at the same time, the second voltage regulation control signal of the second voltage regulation control input end RS2 is controlled to make the second analog switch 1073 in the second voltage regulation module 107 also hit the end with the label of 0, even if the first voltage regulation module 106 and the second voltage regulation module 107 both output a 15V driving voltage to drive the upper arm switch tube, the lower arm switch tube and the PFC switch tube to work;

in this embodiment, if the voltage of the operating voltage input terminal VDD0 is 15V and the upper arm switch tube, the lower arm switch tube and the PFC switch tube in the intelligent power module are SiC-based power switch devices, the present embodiment can make the first analog switch 1063 in the first voltage regulating module 106 go to the terminal labeled 1 by controlling the first voltage regulating control signal at the first voltage regulating control input terminal RS1, at the same time, the second voltage regulating control signal of the second voltage regulating control input terminal RS2 is controlled to make the second analog switch 1073 in the second voltage regulating module 107 also hit the terminal labeled 1, even if the first voltage regulating module 106 and the second voltage regulating module 107 both boost the 15V voltage input by the working voltage input terminal VDD0 to output a 20V driving voltage suitable for driving the SiC-based power switching device;

in this embodiment, if the voltage of the working voltage input end VDD0 is 20V, and the upper arm switching tube and the lower arm switching tube in the intelligent power module are Si-based power switching devices (e.g., Si-based IGBT tubes), and the PFC switching tube in the intelligent power module is a SiC-based power switching device (e.g., SiC-based MOSFET tubes), this embodiment may cause the first analog switch 1063 in the first voltage regulating module 106 to be driven to the end labeled with 2 by controlling the first voltage regulating control signal of the first voltage regulating control input end RS1, so that even if the first voltage dropping module 1062 in the first voltage regulating module 106 drops the input 20V voltage, the 20V voltage is dropped to a 15V voltage suitable for driving the upper arm switching tube (Si-based power switching device) and the lower arm switching tube (Si-based power switching device) to work; meanwhile, in this embodiment, the second analog switch 1073 in the second voltage regulation module 107 can be turned on to the end with the reference number of 0 by controlling the second voltage regulation control signal at the second voltage regulation control input end RS2, even if the second voltage regulation module 107 directly outputs a 20V driving voltage to the driving voltage input ends of the PFC logic buffer circuit 104 and the PFC driving circuit 105, so as to provide a 20V driving voltage for the PFC switching tube (SiC-based power switching device) connected to the output end of the PFC driving circuit 105;

in this embodiment, if the voltage of the working voltage input terminal VDD0 is 20V and the upper arm switch tube, the lower arm switch tube and the PFC switch tube in the intelligent power module are Si-based power switch devices, the present embodiment can make the first analog switch 1063 in the first voltage regulating module 106 go to the terminal labeled 2 by controlling the first voltage regulating control signal at the first voltage regulating control input terminal RS1, at the same time, the second voltage regulating control signal of the second voltage regulating control input terminal RS2 is controlled to make the second analog switch 1073 in the second voltage regulating module 107 also hit the terminal labeled 2, even if the first voltage regulating module 106 and the second voltage regulating module 107 both perform voltage reduction processing on the 20V voltage input by the working voltage input terminal VDD0 to output a 15V driving voltage suitable for driving the Si-based power switching device;

in this embodiment, if the voltage of the working voltage input terminal VDD0 is 20V and the upper arm switch tube, the lower arm switch tube and the PFC switch tube in the intelligent power module are SiC-based power switch devices, in this embodiment, the first analog switch 1063 in the first voltage regulation module 106 is turned on the end with the label 0 by controlling the first voltage regulation control signal of the first voltage regulation control input terminal RS1, and the second analog switch 1073 in the second voltage regulation module 107 is also turned on the end with the label 0 by controlling the second voltage regulation control signal of the second voltage regulation control input terminal RS2, even if the first voltage regulation module 106 and the second voltage regulation module 107 output a 20V driving voltage suitable for driving the SiC-based power switch devices.

To sum up, the driving IC circuit 100 of the intelligent power module of this embodiment is provided with the first voltage regulating module 106 and the second voltage regulating module 107, and the first voltage regulating module 106 and the second voltage regulating module 107 can both implement a voltage boosting function and also implement a voltage reducing function, and can implement switching between different driving voltages by adjusting the voltage regulating control signals of the first voltage regulating control input terminal RS1 and the second voltage regulating control input terminal RS2, so as to solve the problem that the driving IC of the existing intelligent power module cannot directly drive the SiC-based power switch device, that is, the driving IC circuit 100 of the intelligent power module of this embodiment is not only suitable for driving the conventional Si-based power switch device, such as the Si-based IGBT device, but also suitable for driving the SiC-based power switch device, such as the SiC-based MOSFET and other wide bandgap power switch devices, that is, that the driving IC circuit 100 of the intelligent power module of this embodiment has great flexibility, meanwhile, the difficulty of electric control design is reduced, the method is very suitable for occasions needing to use both the traditional Si-based power switch device and the SiC-based power switch device, and the performance exertion and the popularization of the application of the SiC-based power switch device are facilitated.

Fig. 4 is a schematic circuit structure diagram of a second embodiment of a driving IC circuit of an intelligent power module according to the present invention, and referring to fig. 4, in this embodiment, the driving IC circuit 200 of the intelligent power module includes a working voltage input terminal VDD0, an inverter logic buffer circuit 101, an upper bridge driving circuit 102, a lower bridge driving circuit 103, a PFC logic buffer circuit 104, a PFC driving circuit 105, a voltage regulation control input terminal RS, and a voltage regulation module 108.

In this embodiment, the voltage regulation control input terminal RS is configured to input a voltage regulation control signal;

the voltage regulating module 108 is configured to perform voltage regulation processing on the voltage input by the working voltage input terminal VDD0 according to the voltage regulating control signal input by the voltage regulating control input terminal RS, and provide driving input voltages for the inverter logic buffer circuit 101, the upper bridge driving circuit 102, the lower bridge driving circuit 103, the PFC logic buffer circuit 104, and the PFC driving circuit 105; or the voltage input by the working voltage input terminal VDD0 is directly output to the driving voltage input terminals of the inverter logic buffer circuit 101, the upper bridge driving circuit 102, the lower bridge driving circuit 103, the PFC logic buffer circuit 104 and the PFC driving circuit 105.

In this embodiment, an input end RS of the voltage regulation module is connected to the working voltage input end VDD0, a control end of the voltage regulation module 108 is connected to the voltage regulation control input end RS, and an output end of the voltage regulation module 108 is connected to driving voltage input ends of the inverter logic buffer circuit 101, the upper bridge driving circuit 102, the lower bridge driving circuit 103, the PFC logic buffer circuit 104, and the PFC driving circuit 105, respectively; in this embodiment, the output end of the inverter logic buffer circuit 101 is connected to the input end of the upper bridge driving circuit 102 and the input end of the lower bridge driving circuit 103, respectively, and the output end of the PFC logic buffer circuit 104 is further connected to the input end of the PFC driving circuit 105. IN the drawings, IN1, IN2, and IN3 are upper bridge control input terminals of the driving IC circuit 200 of the intelligent power module of this embodiment, IN4, IN5, and IN6 are lower bridge control input terminals of the driving IC circuit 200 of the intelligent power module of this embodiment, and IN7 is a PFC input terminal of the driving IC circuit 200 of the intelligent power module of this embodiment, where IN1, IN2, IN3, IN4, IN5, and IN6 are connected to the inverter logic buffer circuit 101, and IN7 is connected to the PFC logic buffer circuit. HO1 is a first output terminal of the upper bridge driver circuit 102, HO2 is a second output terminal of the upper bridge driver circuit 102, HO3 is a third output terminal of the upper bridge driver circuit 102, LO1 is a first output terminal of the lower bridge driver circuit 103, LO2 is a second output terminal of the lower bridge driver circuit 103, LO3 is a third output terminal of the lower bridge driver circuit 103, and PFCO is an output terminal of the PFC driver circuit 105, wherein the first output terminal HO1 of the upper bridge driver circuit 102, the second output terminal HO2 of the upper bridge driver circuit 102, and the third output terminal HO3 of the upper bridge driver circuit 102 are respectively connected to control terminals of corresponding upper bridge arm switches (not shown) in the smart power module, the first output terminal LO1 of the lower bridge driver circuit 103, the second output terminal HO2 of the lower bridge driver circuit 103, and the third output terminal HO3 of the lower bridge driver circuit 103 are respectively connected to corresponding upper bridge arm switches (not shown in the smart power module) Shown), and an output end PFCO of the PFC driving circuit 105 is connected to a control end of a PFC switching tube (not shown) in the intelligent power module.

Fig. 5 is a schematic structural diagram of an embodiment of the voltage regulation module in a second embodiment of the driving IC circuit of the smart power module of the present invention, and referring to fig. 4 and 5 together, in this embodiment, the voltage regulation module 108 includes a voltage reduction module 1081 and an analog switch 1082, an input terminal of the voltage reduction module 1081 is connected to the working voltage input terminal VDD0, an output terminal of the voltage reduction module 108 is connected to a first input terminal (corresponding to a terminal labeled 1 in the analog switch 1082) of the analog switch 1082, a second input terminal (corresponding to a terminal labeled 0 in the analog switch 1082) of the analog switch 1082 is directly connected to the working voltage input terminal VDD0, a common terminal of the analog switch 1082 is respectively connected to driving voltage input terminals of the inverter logic buffer circuit 101, the upper bridge driving circuit 102, the lower bridge driving circuit 103, the PFC logic buffer circuit 104, and the PFC driving circuit 105, the voltage of the common end of the analog switch 1082 is VDD, and the control end of the analog switch 1082 is connected with the voltage regulation control input end RS. In this embodiment, the voltage at the working voltage input terminal is 20V.

In this embodiment, if the voltage at the working voltage input end is 20V, and if the upper arm switching tube, the lower arm switching tube, and the PFC switching tube in the intelligent power module are Si-based power switching devices, this embodiment may cause the analog switch 1082 in the voltage regulating module 108 to be driven to the end with the label 1 by controlling the voltage regulating control signal at the voltage regulating control input end RS, so that the voltage regulating module 108 performs voltage reduction processing on the 20V voltage input by the working voltage input end VDD0 to output a 15V driving voltage suitable for driving the Si-based power switching device; in this embodiment, if the upper arm switch tube, the lower arm switch tube and the PFC switch tube in the intelligent power module are SiC-based power switch devices, the embodiment can make the analog switch 1082 in the voltage regulation module 108 to the end with the label of 0 by controlling the voltage regulation control signal of the voltage regulation control input end RS, so that the voltage regulation module 108 directly outputs a 20V driving voltage suitable for driving the SiC-based power switch devices.

Fig. 6 is a schematic structural diagram of another embodiment of the voltage regulation module in the second embodiment of the driving IC circuit of the smart power module of the present invention, and referring to fig. 4 and fig. 6 together, in this embodiment, the voltage regulation module 108 includes a boost module 1081 'and an analog switch 1082', an input terminal of the boost module 1081 'is connected to the working voltage input terminal VDD0, an output terminal of the boost module 1081' is connected to a first input terminal (corresponding to a terminal labeled 1 in the analog switch 1082 ') of the analog switch 1082', a second input terminal (corresponding to a terminal labeled 0 in the analog switch 1082 ') is directly connected to the working voltage input terminal VDD0, and a common terminal of the analog switch 1082' is connected to the driving voltage input terminals of the inverter logic buffer circuit 101, the upper bridge driving circuit 102, the lower bridge driving circuit 103, the PFC logic buffer circuit 104 and the PFC driving circuit 105 respectively, and the control end of the analog switch 1082' is connected with the voltage regulation control input end RS.

In this embodiment, if the voltage at the working voltage input end is 15V, and if the upper bridge arm switching tube, the lower bridge arm switching tube, and the PFC switching tube in the intelligent power module are Si-based power switching devices, this embodiment may cause the analog switch 1082' in the voltage regulating module 108 to be driven to the end with the label of 0 by controlling the voltage regulating control signal at the voltage regulating control input end RS, so that the voltage regulating module 108 directly outputs a 15V driving voltage suitable for driving the Si-based power switching device; in this embodiment, if the upper arm switch tube, the lower arm switch tube and the PFC switch tube in the intelligent power module are SiC-based power switch devices, the embodiment may enable the analog switch 1082 in the voltage regulation module 108 to be driven to the end with the reference number 1 by controlling the voltage regulation control signal of the voltage regulation control input end RS, and enable the voltage regulation module 108 to boost the 15V voltage input by the working voltage input end VDD0, so as to output a 20V driving voltage suitable for driving the SiC-based power switch devices.

To sum up, the driving IC circuit 200 of the intelligent power module of this embodiment is provided with the voltage regulating module 108, and the voltage regulating module 108 in this embodiment can realize a voltage reducing function (corresponding to fig. 5) or a voltage boosting function (corresponding to fig. 6), and when the upper bridge arm switching tube, the lower bridge arm switching tube and the PFC switching tube in the intelligent power module are all Si-based power switching devices or the upper bridge arm switching tube, the lower bridge arm switching tube and the PFC switching tube in the intelligent power module are all SiC-based power switching devices, this embodiment can realize switching between different driving voltages by regulating the voltage regulating control signal at the voltage regulating control input end RS, thereby solving the problem that the driving IC of the existing intelligent power module cannot directly drive the SiC-based power switching devices, that is, the driving IC circuit 200 of the intelligent power module of this embodiment can be adapted to drive the conventional Si-based power switching devices, for example, the Si-based IGBT device can also be applied to drive a SiC-based power switching device, such as a SiC-based MOSFET transistor, and other wide bandgap power switching devices, that is, the driving IC circuit 200 of the intelligent power module of this embodiment has great flexibility, and at the same time, the difficulty of electronic control design is also reduced, and the driving IC circuit 200 of the intelligent power module of this embodiment is very suitable for the situation where all switching tubes adopt the conventional Si-based power switching devices or all switching tubes adopt the SiC-based power switching devices, and is beneficial to performance development and popularization of the SiC-based power switching devices.

Referring to fig. 7, the intelligent power module 300 includes a low-voltage power supply input terminal VCC, a first voltage regulation terminal CTR1, a second voltage regulation terminal CTR1, a first upper bridge arm control input terminal HIN1, a second upper bridge arm control input terminal HIN2, a third upper bridge arm control input terminal HIN3, a first lower bridge arm control input terminal LIN1, a second lower bridge arm control input terminal LIN2, a third lower bridge arm control input terminal LIN3, a PFC control input terminal PFCIN, a plurality of resistors (such as a resistor R11, a resistor R21, a resistor R31, a resistor R41, and a resistor R42 in the figure), a first upper bridge arm switching tube PD11, a second upper bridge arm switch (not shown in the figure), a third upper bridge arm switching tube (not shown in the figure), a first lower bridge arm switching tube PD21, a second lower bridge arm switching tube (not shown in the figure), and a third lower bridge arm switching tube (not shown in the figure), The PFC switch tube PD31 and the driving IC circuit of the smart power module, in this embodiment, the driving IC circuit of the smart power module is the driving IC circuit 100 of the smart power module as described above (i.e., the driving IC circuit 100 of the smart power module shown in fig. 1).

Referring to fig. 7 and fig. 1 together, IN this embodiment, the low voltage region power supply input terminal VCC is connected to the working voltage input terminal VDD0 of the driving IC circuit 100 of the smart power module, the first voltage regulation terminal CTR1 is connected to the first voltage regulation control input terminal RS1 of the driving IC circuit 100 of the smart power module, the second voltage regulation terminal CTR2 is connected to the second voltage regulation control input terminal RS2 of the driving IC circuit 100 of the smart power module, the first upper arm control input terminal HIN1 is connected to the IN1 terminal of the driving IC circuit 100 of the smart power module, the second upper arm control input terminal HIN2 is connected to the IN2 terminal of the driving IC circuit 100 of the smart power module, the third upper arm control input terminal HIN3 is connected to the IN3 terminal of the driving IC circuit 100 of the smart power module, the first lower arm control input terminal LIN1 is connected to the IN4 terminal of the driving IC circuit 100 of the smart power module, the second lower leg control input terminal LIN2 is connected to the IN5 terminal of the driving IC circuit 100 of the smart power module, the third lower leg control input terminal LIN3 is connected to the IN6 terminal of the driving IC circuit 100 of the smart power module, the PFC control input terminal PFCIN is connected to the IN7 terminal of the driving IC circuit 100 of the smart power module, the first output terminal HO1 of the upper bridge driving circuit 102 IN the driving IC circuit 100 of the smart power module is connected to the control terminal of the first upper leg switching tube PD11 through the resistor R11, IN this embodiment, the second output terminal HO2 of the upper bridge driving circuit 102 is connected to the control terminal of the second upper leg switching tube (not shown IN fig. 7) (the connection structure of the second upper leg switching tube is not shown IN fig. 7, the connection structure is the same as the connection structure of the first upper leg switching tube PD 11), and the third output terminal HO 4 of the upper bridge driving circuit 102 is connected to the third upper leg switching tube PD11 through a resistor (not shown IN fig. 829) The control end of a switching tube (not shown in the figure) is connected (the connection structure of the third upper arm switching tube is not shown in the figure 7, and the connection structure of the third upper arm switching tube is the same as that of the first upper arm switching tube PD 11); a first output end LO1 of a lower bridge driving circuit 103 in a driving IC circuit 100 of the smart power module is connected to a control end of the first lower bridge arm switching tube PD21 through a resistor R21, a second output end LO2 of the lower bridge driving circuit 103 is connected to a control end of a second lower bridge arm switching tube (not shown) through a resistor (not shown in fig. 7) (a connection structure of the second lower bridge arm switching tube is not shown in fig. 7, and the connection structure is the same as that of the first lower bridge arm switching tube PD 21), and a third output end L03 of the lower bridge driving circuit 103 is connected to a control end of a third lower bridge arm switching tube (not shown in fig. 7) (a connection structure of the third lower bridge arm switching tube is not shown in fig. 7, and the connection structure is the same as that of the first lower bridge arm switching tube PD 21); the output end PFCO of the PFC driving circuit 105 is connected to the control end of the PFC switching tube PD31 through a resistor R31. In this embodiment, the first upper arm switching tube PD11, the second upper arm switching tube (not shown), the third upper arm switching tube (not shown), the first lower arm switching tube PD21, the second lower arm switching tube (not shown), the third lower arm switching tube (not shown), and the PFC switching tube PD31 are Si-based IGBT tubes or SiC-based MOSFET tubes. Preferably, in this embodiment, the first upper arm switching tube PD11, the second upper arm switching tube (not shown), the third upper arm switching tube (not shown), the first lower arm switching tube PD21, the second lower arm switching tube (not shown), and the third lower arm switching tube (not shown) are Si-based IGBT tubes, and the PFC switching tube PD31 is a SiC-based MOSFET tube. In this embodiment, the voltage at the input terminal VCC of the low voltage region power supply is 15V or 20V.

In this embodiment, the intelligent power module 300 further includes a first high-voltage region power supply input end P1, a second high-voltage region power supply input end P2, and a plurality of freewheeling diodes (e.g., D11 and D21 in the figure), in this embodiment, when the first upper arm switching tube PD11, the second upper arm switching tube (not shown), the third upper arm switching tube (not shown), the first lower arm switching tube PD21, the second lower arm switching tube (not shown), and the third lower arm switching tube (not shown) are Si-based IGBT tubes, and the PFC switching tube PD31 is a SiC-based tube, the collector of the first upper arm switching tube PD11, the collector of the second upper arm switching tube (not shown), and the collector of the third upper arm switching tube (not shown) are connected to the first high-voltage region power supply input end P1, the emitter of the first upper arm switching tube PD11 is connected to the collector of the first lower arm switching tube PD21, an emitter of the second upper arm switch tube (not shown) is connected to a collector of the second lower arm switch tube (not shown), an emitter of the third upper arm switch tube (not shown) is connected to a collector of the third lower arm switch tube (not shown), and an emitter of the first lower arm switch tube PD21, an emitter of the second lower arm switch tube (not shown), and an emitter of the third lower arm switch tube (not shown) are all grounded via a resistor R42. If the PFC switch tube PD31 is a SiC-based NMOS tube in this embodiment, the drain of the PFC switch tube PD31 is connected to the second high-voltage region power supply input terminal P2, and the source of the PFC switch tube PD31 is grounded through a resistor R41; a cathode of a freewheeling diode D11 is connected to a collector of the first upper arm switching tube PD11, an anode of a freewheeling diode D11 is connected to an emitter of the first upper arm switching tube PD11, a cathode of a freewheeling diode D21 is connected to a collector of the first lower arm switching tube PD21, and an anode of a freewheeling diode D21 is connected to an emitter of the first lower arm switching tube PD21, and similarly, freewheeling diodes (not shown) are also connected between collectors and emitters of the second upper arm switching tube, the third upper arm switching tube, the second lower arm switching tube, and the third lower arm switching tube; in this embodiment, a connection node between the first upper arm switching tube PD11 and the first lower arm switching tube PD21, a connection node between the second upper arm switching tube and the second lower arm switching tube, and a connection node between the third upper arm switching tube and the third lower arm switching tube are connected to the motor M.

In the intelligent power module 300 of this embodiment, the first voltage regulation module 106 and the second voltage regulation module 107 are disposed in the driving IC circuit 100 of the intelligent power module, and the first voltage regulation module 106 and the second voltage regulation module 107 can both realize a voltage boosting function and a voltage reducing function, and can realize switching between different driving voltages by adjusting the voltage regulation control signals of the first voltage regulation control input terminal RS1 and the second voltage regulation control input terminal RS2, so as to solve the problem that the driving IC in the existing intelligent power module cannot directly drive the SiC-based power switching device, that is, the driving IC circuit 100 of the intelligent power module of this embodiment is not only suitable for driving the conventional Si-based power switching device, such as a Si-based IGBT device, but also suitable for driving the SiC-based power switching device, such as a SiC-based MOSFET transistor, and other broadband power switching devices, that is, the intelligent power module 300 of this embodiment has great flexibility, reduces the difficulty of electronic control design, is very suitable for the occasions where both the conventional Si-based power switch device and the SiC-based power switch device need to be used, and is beneficial to the performance exertion and the popularization of the application of the SiC-based power switch device.

Fig. 8 is a schematic structural diagram of a second embodiment of an intelligent power module according to the present invention, and referring to fig. 8, the intelligent power module 400 includes a low-voltage region power supply input terminal VCC, a voltage regulating terminal CTR, a first upper bridge arm control input terminal HIN1, a second upper bridge arm control input terminal HIN2, a third upper bridge arm control input terminal HIN3, a first lower bridge arm control input terminal LIN1, a second lower bridge arm control input terminal LIN2, a third lower bridge arm control input terminal LIN3, a PFC control input terminal PFCIN, a plurality of resistors (such as resistor R11, resistor R21, resistor R31, resistor R41, and resistor R42 in the figure), a first upper bridge arm switching tube PD11, a second upper bridge arm switch (not shown in the figure), a third upper bridge arm switching tube (not shown in the figure), a first lower bridge arm switching tube PD21, a second lower bridge arm switching tube (not shown in the figure), a third lower bridge switching tube PD31, and a driving IC circuit of the intelligent power module, the driving IC circuit of the smart power module in this embodiment is the driving IC circuit 200 of the smart power module as described above (i.e., the driving IC circuit 200 of the smart power module shown in fig. 4).

Referring to fig. 8 and 4 together, in this embodiment, the low voltage region power supply input VCC is connected to the working voltage input VDD0 of the driver IC circuit 200 of the intelligent power module, and the voltage regulation terminal CTR is connected to the voltage regulation control input RS of the driver IC circuit 200 of the intelligent power module, and the connection relationship of other components in this embodiment is the same as that of the intelligent power module 300, and is not repeated here.

In this embodiment, the first upper arm switching tube PD11, the second upper arm switching tube (not shown), the third upper arm switching tube (not shown), the first lower arm switching tube PD21, the second lower arm switching tube (not shown), the third lower arm switching tube (not shown), and the PFC switching tube PD31 are Si-based IGBT tubes, or the first upper arm switching tube PD11, the second upper arm switching tube (not shown), the third upper arm switching tube (not shown), the first lower arm switching tube PD21, the second lower arm switching tube (not shown), the third lower arm switching tube (not shown), and the PFC switching tube PD31 are Si-based MOSFET tubes.

In this embodiment, if the voltage at the input terminal VCC of the low voltage area power supply is 15V, the driving IC circuit 200 of the intelligent power module adopts the voltage regulating module 108 shown in fig. 6. Specifically, when the first upper arm switching tube PD11, the second upper arm switching tube (not shown), the third upper arm switching tube (not shown), the first lower arm switching tube PD21, the second lower arm switching tube (not shown), the third lower arm switching tube (not shown), and the PFC switching tube PD31 are Si-based IGBT tubes, the embodiment can make the analog switch 1082' in the voltage regulation module 108 hit the end with the reference number of 0 by controlling the voltage regulation control signal of the voltage regulation control input end RS, so that the voltage regulation module 108 directly outputs a 15V driving voltage suitable for driving a Si-based power switching device; in this embodiment, when the first upper arm switching tube PD11, the second upper arm switching tube (not shown), the third upper arm switching tube (not shown), the first lower arm switching tube PD21, the second lower arm switching tube (not shown), the third lower arm switching tube (not shown), and the PFC switching tube PD31 are SiC-based power switching devices, the embodiment can enable the analog switch 1082 in the voltage regulation module 108 to be driven to the end with the reference number 1 by controlling the voltage regulation control signal of the voltage regulation control input end RS, and enable the voltage regulation module 108 to boost the 15V voltage input by the working voltage input end VDD0, so as to output a 20V driving voltage suitable for driving the SiC-based power switching devices.

In this embodiment, if the voltage at the input terminal VCC of the low voltage area power supply is 20V, the driving IC circuit 200 of the intelligent power module adopts the voltage regulating module 108 shown in fig. 5. Specifically, when the first upper arm switching tube PD11, the second upper arm switching tube (not shown), the third upper arm switching tube (not shown), the first lower arm switching tube PD21, the second lower arm switching tube (not shown), the third lower arm switching tube (not shown), and the PFC switching tube PD31 are Si-based power switching devices, the embodiment can control the voltage regulation control signal at the voltage regulation control input end RS to make the analog switch 1082 in the voltage regulation module 108 to be at the end with the reference number 1, so that the voltage regulation module 108 performs voltage reduction processing on the 20V voltage input by the working voltage input end VDD0 to output a 15V driving voltage suitable for driving the Si-based power switching devices; in this embodiment, when the first upper arm switching tube PD11, the second upper arm switching tube (not shown), the third upper arm switching tube (not shown), the first lower arm switching tube PD21, the second lower arm switching tube (not shown), the third lower arm switching tube (not shown), and the PFC switching tube PD31 are SiC-based power switching devices, the voltage regulation control signal at the voltage regulation control input end RS is controlled in this embodiment, so that the analog switch 1082 in the voltage regulation module 108 is driven to the end with the reference number of 0, and the voltage regulation module 108 directly outputs a 20V driving voltage suitable for driving the SiC-based power switching devices.

To sum up, in the intelligent power module 400 of this embodiment, because the voltage regulating module 108 is disposed in the driving IC circuit 200 of the intelligent power module, and the voltage regulating module 108 in this embodiment can realize a voltage step-down function (corresponding to fig. 5) or a voltage step-up function (corresponding to fig. 6), when the first upper arm switching tube PD11, the second upper arm switching tube (not shown), the third upper arm switching tube (not shown), the first lower arm switching tube PD21, the second lower arm switching tube (not shown), the third lower arm switching tube (not shown), and the PFC switching tube PD31 in the intelligent power module 400 of this embodiment are Si-based power switching devices, or the first upper arm switching tube PD11, the second upper arm switching tube (not shown), the third upper arm switching tube (not shown), the first lower arm switching tube PD21, the second lower arm switching tube (not shown), and the PFC switching tube PD31, When the third lower leg switching tube (not shown) and the PFC switching tube PD31 are SiC-based power switching devices, the present embodiment can realize switching between different driving voltages by adjusting the voltage-regulating control signal at the voltage-regulating control input terminal RS, thereby solving the problem that the driving IC of the existing intelligent power module cannot directly drive the SiC-based power switching device, i.e., the driving IC circuit 200 of the intelligent power module of the present embodiment is not only suitable for driving the conventional Si-based power switching device, such as a Si-based IGBT device, but also suitable for driving the SiC-based power switching device, such as a wide bandgap power switching device, such as a SiC-based MOSFET tube, i.e., the intelligent power module 400 of the present embodiment has great flexibility and reduces the difficulty of electrical control design, the intelligent power module 400 of the present embodiment is very suitable for the situation where all switching tubes adopt the conventional Si-based power switching devices or all switching tubes sample the SiC-based power switching devices, is beneficial to the performance exertion and the popularization of the application of the SiC-based power switch device.

The present invention further provides an air conditioner, which includes an intelligent power module, and the structure of the intelligent power module can refer to the above embodiments, and is not described herein again. It should be understood that, since the air conditioner of the present embodiment adopts the technical solution of the intelligent power module, the air conditioner has all the beneficial effects of the intelligent power module.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A drive IC circuit of an intelligent power module is characterized in that the drive IC circuit comprises a working voltage input end, an inversion logic buffer circuit, an upper bridge drive circuit, a lower bridge drive circuit, a PFC logic buffer circuit, a PFC drive circuit, a first voltage regulation control input end, a second voltage regulation control input end, a first voltage regulation module and a second voltage regulation module; wherein:

2. The driving IC circuit of intelligent power module according to claim 1, wherein the input terminal of the first voltage regulating module is connected to the operating voltage input terminal, the control terminal of the first voltage regulating module is connected to the first voltage regulating control input terminal, and the output terminal of the first voltage regulating module is connected to the driving voltage input terminals of the inverter logic buffer circuit, the upper bridge driving circuit and the lower bridge driving circuit, respectively; the input end of the second voltage regulating module is connected with the working voltage input end, the control end of the second voltage regulating module is connected with the second voltage regulating control input end, and the output end of the second voltage regulating module is respectively connected with the driving voltage input ends of the PFC logic buffer circuit and the PFC driving circuit; the output end of the inverter logic buffer circuit is connected with the input end of the upper bridge driving circuit and the input end of the lower bridge driving circuit respectively, and the output end of the PFC logic buffer circuit is connected with the input end of the PFC driving circuit.

3. The driver IC circuit of an intelligent power module according to claim 1, the first voltage regulating module comprises a first voltage boosting module, a first voltage reducing module and a first analog switch, the input ends of the first boosting module and the first voltage reducing module are connected with the working voltage input end, the output end of the first voltage boosting module is connected with the first input end of the first analog switch, the output end of the first voltage reducing module is connected with the second input end of the first analog switch, the third input end of the first analog switch is directly connected with the working voltage input end, the public end of the first analog switch is respectively connected with the driving voltage input ends of the inversion logic buffer circuit, the upper bridge driving circuit and the lower bridge driving circuit, and the control end of the first analog switch is connected with the first voltage regulation control input end.

4. The driver IC circuit of the smart power module according to claim 1, wherein the second voltage regulation module comprises a second boost module, a second buck module and a second analog switch, the input terminals of the second boost module and the second buck module are connected to the working voltage input terminal, the output terminal of the second boost module is connected to the first input terminal of the second analog switch, the output terminal of the second buck module is connected to the second input terminal of the second analog switch, the third input terminal of the second analog switch is directly connected to the working voltage input terminal, the common terminal of the second analog switch is respectively connected to the PFC logic buffer circuit and the driving voltage input terminal of the PFC driver circuit, and the control terminal of the second analog switch is connected to the second voltage regulation control input terminal.

5. A drive IC circuit of an intelligent power module is characterized in that the drive IC circuit comprises a working voltage input end, an inverter logic buffer circuit, an upper bridge drive circuit, a lower bridge drive circuit, a PFC logic buffer circuit, a PFC drive circuit, a voltage regulation control input end and a voltage regulation module; wherein:

6. The driving IC circuit of claim 5, wherein the input terminal of the voltage regulating module is connected to the operating voltage input terminal, the control terminal of the voltage regulating module is connected to the voltage regulating control input terminal, and the output terminal of the voltage regulating module is connected to the driving voltage input terminals of the inverter logic buffer circuit, the upper bridge driving circuit, the lower bridge driving circuit, the PFC logic buffer circuit, and the PFC driving circuit, respectively; the output end of the inverter logic buffer circuit is connected with the input end of the upper bridge driving circuit and the input end of the lower bridge driving circuit respectively, and the output end of the PFC logic buffer circuit is also connected with the input end of the PFC driving circuit.

7. The driving IC circuit of claim 5, wherein the voltage regulating module comprises a voltage reducing module and an analog switch, an input terminal of the voltage reducing module is connected to the operating voltage input terminal, an output terminal of the voltage reducing module is connected to a first input terminal of the analog switch, a second input terminal of the analog switch is directly connected to the operating voltage input terminal, a common terminal of the analog switch is respectively connected to the driving voltage input terminals of the inverter logic buffer circuit, the upper bridge driving circuit, the lower bridge driving circuit, the PFC logic buffer circuit, and the PFC driving circuit, and a control terminal of the analog switch is connected to the voltage regulating control input terminal.

8. The driving IC circuit of claim 5, wherein the voltage regulating module comprises a voltage boosting module and an analog switch, an input terminal of the voltage boosting module is connected to the operating voltage input terminal, an output terminal of the voltage boosting module is connected to a first input terminal of the analog switch, a second input terminal of the analog switch is directly connected to the operating voltage input terminal, a common terminal of the analog switch is respectively connected to the driving voltage input terminals of the inverter logic buffer circuit, the upper bridge driving circuit, the lower bridge driving circuit, the PFC logic buffer circuit, and the PFC driving circuit, and a control terminal of the analog switch is connected to the voltage regulating control input terminal.

9. An intelligent power module is characterized by comprising a low-voltage power supply input end, a first voltage regulating end, a second voltage regulating end, an upper bridge arm control input end, a lower bridge arm control input end, a PFC control input end, a plurality of resistors, a first upper bridge arm switching tube, a second upper bridge arm switching tube, a third upper bridge arm switching tube, a first lower bridge arm switching tube, a second lower bridge arm switching tube, a third lower bridge arm switching tube, a PFC switching tube and a driving IC circuit of the intelligent power module, wherein the driving IC circuit comprises a first driving IC circuit, a second driving IC circuit, a first voltage regulating circuit, a second voltage regulating circuit, a first upper bridge arm switching tube, a; wherein:

10. An intelligent power module is characterized by comprising a low-voltage power supply input end, a voltage regulating end, an upper bridge arm control input end, a lower bridge arm control input end, a PFC control input end, a plurality of resistors, a first upper bridge arm switching tube, a second upper bridge arm switching tube, a third upper bridge arm switching tube, a first lower bridge arm switching tube, a second lower bridge arm switching tube, a third lower bridge arm switching tube, a PFC switching tube and a driving IC circuit of the intelligent power module, wherein the driving IC circuit comprises a first driving IC circuit, a second driving IC circuit and a third driving IC circuit; wherein:

11. An air conditioner characterized in that it comprises the smart power module as claimed in claim 9 or the smart power module as claimed in claim 10.