CN116780887B - Intelligent power module with drive resistor selection function - Google Patents

Intelligent power module with drive resistor selection function Download PDF

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Publication number
CN116780887B
CN116780887B CN202311027309.5A CN202311027309A CN116780887B CN 116780887 B CN116780887 B CN 116780887B CN 202311027309 A CN202311027309 A CN 202311027309A CN 116780887 B CN116780887 B CN 116780887B
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resistor
circuit
driving
diode
gate
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CN116780887A (en
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冯宇翔
谢荣才
周西军
左安超
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Guangdong Huixin Semiconductor Co Ltd
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Guangdong Huixin Semiconductor Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/10—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current additionally responsive to some other abnormal electrical conditions
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
    • H02H5/047—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using a temperature responsive switch
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Conversion In General (AREA)

Abstract

The invention relates to the technical field of PFC intelligent power modules, and provides an intelligent power module with a driving resistor selection function, which comprises the following components: the power supply, PFC drive control circuit, rectifier bridge circuit, protection resistor, thermistor NTC and IGBT circuit; the thermistor NTC and the protection resistor are used for collecting the temperature generated by the PFC drive control circuit during operation, and the rectifier bridge circuit is used for converting alternating current input by a power supply into direct current and providing power supply voltage VCC for the PFC drive control circuit; the PFC drive control circuit comprises a drive DRV circuit, a drive resistor selection circuit and a drive resistor circuit, wherein the input end of the drive DRV circuit and the output end of the drive resistor selection circuit are electrically connected with the input end of the drive resistor circuit. The intelligent power module with the drive resistor selection function has the advantages of good integration effect, strong anti-interference capability and high reliability.

Description

Intelligent power module with drive resistor selection function
Technical Field
The invention relates to the technical field of PFC intelligent power modules, in particular to an intelligent power module with a driving resistor selection function.
Background
The english for PFC is all called "Power Factor Correction", meaning "power factor correction", power factor refers to the relationship between the effective power and the total power consumption (apparent power), i.e. the ratio of the effective power divided by the total power consumption (apparent power). Basically, the power factor can measure the extent to which power is effectively utilized, and when the power factor value is larger, it represents the higher power utilization rate.
Currently, industrial and consumer electronic control PFC mostly adopts active PFC, wherein the active PFC consists of an inductor, a capacitor and electronic components, and the phase difference between current and voltage is compensated by adjusting the waveform of current through a special IC. Active PFC can achieve higher power factor-typically up to 98%.
At present, a PFC circuit generally adopts discrete components, the design of a PCB is complex, and the discrete components of the PFC circuit are designed to occupy larger positions of cooling fins, such as a PFC discrete power component rectifier bridge, an IGBT and an FRD. Meanwhile, the wiring width of the electric connection of the rectifier bridge, the IGBT and the FRD is large, the creepage distance requirements among different networks are high, the PCB layout wiring of the rectifier bridge, the IGBT and the FRD is very complex, and the realization is difficult. In addition, the IGBT driving resistance of the PFC module is a resistance value, and the driving resistance cannot be adjusted for different application environments, so that various problems such as overlarge switching loss of the IGBT, overlarge peak voltage and the like are caused, and the IGBT cannot work in an optimal driving environment. Therefore, along with the increase of application scenes and the improvement of energy efficiency standards, the PFC circuit is widely applied to various scenes, and the control driving technology of PFC also becomes the difficulty and the key point of electric control design.
Disclosure of Invention
Aiming at the defects of the related technology, the invention provides the intelligent power module which has good circuit integration effect, is convenient for improving the application flexibility of the PFC module, improves the anti-interference capability of the PFC circuit, simplifies the design of an electric control system, improves the reliability of the whole electric control system and reduces the cost of the whole electric control system.
In order to solve the above technical problems, an embodiment of the present invention provides an intelligent power module with a driving resistor selection function, including: the power supply, PFC drive control circuit, rectifier bridge circuit, protection resistor, thermistor NTC and IGBT circuit;
the rectifier bridge circuit is connected with the power supply, the thermistor NTC and the protection resistor are used for collecting the temperature generated when the PFC drive control circuit works, and the rectifier bridge circuit is used for converting alternating current input by the power supply into direct current and providing power supply voltage VCC for the PFC drive control circuit;
the PFC drive control circuit comprises a drive DRV circuit, a drive resistor selection circuit and a drive resistor circuit, wherein the input end of the drive DRV circuit and the output end of the drive resistor selection circuit are electrically connected with the input end of the drive resistor circuit, and the output end of the drive resistor circuit is used as the output end of the PFC drive control circuit;
The driving resistor selection circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a first comparator, a second comparator, a first NOT gate, a second NOT gate and a first AND gate;
the first end of the first resistor is connected with the power supply voltage VCC, the second end of the first resistor is respectively connected with the second resistor and the negative input end of the first comparator, the second end of the second resistor is grounded, the positive input end of the first comparator and the positive input end of the second comparator are respectively connected with the Rgx port of the PFC driving control circuit, the output end of the first comparator is respectively connected with the first end of the third resistor, the input end of the first NOT gate and the first input end of the first AND gate, the second end of the third resistor is connected with the power supply voltage VCC, and the output end of the NOT gate is used for outputting a first direct current analog signal;
the first end of the fourth resistor is connected with the power supply voltage VCC, the second end of the fourth resistor is respectively connected with the first end of the fifth resistor and the negative input end of the second comparator, the output end of the second comparator is respectively connected with the first end of the sixth resistor and the input end of the second NOT gate, the second end of the sixth resistor is connected with the power supply voltage VCC, the output end of the second NOT gate is connected with the second input end of the first AND gate, the output end of the first AND gate is used for outputting a second direct current analog signal, and the output end of the second comparator is also used for outputting a third direct current analog signal;
The driving resistor circuit comprises a plurality of driving resistor branches, and the driving resistor selection circuit is used for controlling the driving resistor circuit to switch between the driving resistor branches by outputting different direct current analog signals.
Preferably, the first end of the IGBT circuit is connected to the VSS port, the second end of the IGBT circuit is connected to the PFCL port, the third end of the IGBT circuit is connected to the power supply voltage VCC, the fourth end of the IGBT circuit is connected to the output end of the PFC drive control circuit, the first end of the protection resistor is connected to VDD, the second end of the protection resistor is connected to the TH port of the PFC drive control circuit and the first end of the thermistor, respectively, and the second end of the thermistor is grounded.
Preferably, the PFC drive control circuit further includes a reference voltage output circuit, a first RC filter circuit, a second RC filter circuit, a plurality of schmitt triggers, a plurality of low pass filters, a plurality of level shifting circuits, an under-voltage protection circuit, a PFC protection circuit, a temperature protection circuit, an RC delay circuit, a fault output circuit, and a fault logic control circuit; the reference voltage output circuit is sequentially connected with the input ends of the undervoltage protection circuit and the fault logic control circuit;
The plurality of schmitt triggers comprise a first schmitt trigger, a second schmitt trigger, a third schmitt trigger, a fourth schmitt trigger and a fifth schmitt trigger;
the plurality of low pass filters include a first low pass filter, a second low pass filter, a third low pass filter, a fourth low pass filter, and a fifth low pass filter;
the plurality of level shifting circuits include a first level shifting circuit, a second level shifting circuit, a third level shifting circuit, a fourth level shifting circuit, and a fifth level shifting circuit;
the first RC filter circuit is electrically connected with the first Schmitt trigger, the first low-pass filter, the first level conversion circuit, the driving DRV circuit and the driving resistor circuit in sequence; the second RC filter circuit is electrically connected with the second Schmitt trigger, the second low-pass filter, the second level conversion circuit, the driving resistor selection circuit and the driving resistor circuit in sequence;
the third schmitt trigger is electrically connected with the input ends of the third low-pass filter, the third level conversion circuit, the PFC protection circuit and the fault logic control circuit in sequence;
The fourth schmitt trigger is electrically connected with the input ends of the fourth low-pass filter, the fourth level conversion circuit, the temperature protection circuit and the fault logic control circuit in sequence;
the fifth schmitt trigger is electrically connected with the input ends of the fifth low-pass filter, the fifth level conversion circuit, the RC delay circuit and the fault logic control circuit in sequence;
the first end of the fault output circuit is connected with the FO port, the second end of the fault output circuit is grounded, the third end of the fault output circuit is connected with the input end of the fault logic control circuit, and the output end of the fault logic circuit is connected with the input end of the driving DRV circuit.
Preferably, the rectifier bridge circuit includes a first diode, a second diode, a third diode and a fourth diode, wherein the cathode of the first diode is connected with the anode of the second diode to be used as an AC S port of the intelligent power module, the anode of the third diode is connected with the cathode of the fourth diode to be used as an AC R port of the intelligent power module, the anode of the first diode is connected with the anode of the fourth diode to be used as a DBN port of the intelligent power module, and the cathode of the second diode is connected with the cathode of the third diode to be used as a DB P port of the intelligent power module.
Preferably, the IGBT circuit includes: IGBT1, fifth diode, and sixth diode; the grid electrode of the IGBT1 is connected with the output end of the PFC driving control circuit, the source electrode of the IGBT1 is connected with the positive electrode of the fifth diode, the drain electrode of the IGBT1 is respectively connected with the negative electrode of the fifth diode and the positive electrode of the sixth diode, and the negative electrode of the sixth diode is connected with the power supply voltage VCC.
Preferably, the driving resistor circuit includes a second and gate, a third and gate, a fourth and gate, a first turn-off driving resistor, a second turn-off driving resistor, a third turn-off driving resistor, a first turn-on driving resistor, a second turn-on driving resistor, a third turn-on driving resistor, a seventh diode, an eighth diode, and a ninth diode;
the output end of the driving DRV circuit is respectively connected with the first input end of the second AND gate, the first input end of the third AND gate and the first input end of the fourth AND gate, and the first direct current analog signal, the second direct current analog signal and the third direct current analog signal are respectively output to the second input end of the second AND gate, the second input end of the third AND gate and the second input end of the fourth AND gate;
The output end of the second AND gate is respectively connected with the first end of the first turn-off driving resistor and the first end of the first turn-on driving resistor, the second end of the first turn-off driving resistor is connected with the negative electrode of the seventh diode, and the positive electrode of the seventh diode is connected with the second end of the first turn-on driving resistor and is connected to the output end of the PFC driving control circuit;
the output end of the third AND gate is respectively connected with the first end of the second turn-off driving resistor and the first end of the second turn-on driving resistor, the second end of the second turn-off driving resistor is connected with the negative electrode of the eighth diode, and the positive electrode of the eighth diode is connected with the second end of the second turn-on driving resistor and is connected to the output end of the PFC driving control circuit;
the output end of the fourth AND gate is respectively connected with the first end of the third turn-off driving resistor and the first end of the third turn-on driving resistor, the second end of the third turn-off driving resistor is connected with the negative electrode of the ninth diode, and the positive electrode of the ninth diode is connected with the second end of the third turn-on driving resistor and is connected to the output end of the PFC driving control circuit.
Preferably, the driving DRV circuit includes a driving circuit, a driving resistor Rgx, and a second IGBT, where an input end of the driving circuit is connected to the first level conversion circuit, an output end of the driving circuit is connected to a first end of the driving resistor Rgx, a second end of the driving resistor Rgx is connected to a control end of the second IGBT, a first end of the second IGBT is grounded, and a second end of the second IGBT is connected to an input end of the driving resistor circuit.
Preferably, the PFC protection circuit includes a seventh resistor, an eighth resistor, a ninth resistor, a third comparator, and a first MOS transistor; the first end of the seventh resistor is connected with the output end of the reference voltage output circuit, the second end of the seventh resistor is respectively connected with the negative input end of the third comparator and the first end of the eighth resistor, the positive input end of the third comparator is connected with the output end of the third level conversion circuit, and the output end of the third comparator is connected with the input end of the fault logic control circuit; the drain electrode of the first MOS tube is respectively connected with the second end of the eighth resistor and the first end of the ninth resistor, the source electrode of the first MOS tube is connected with the second end of the ninth resistor and grounded, and the grid electrode of the first MOS tube is connected with the input end of the fault logic control circuit.
Preferably, the temperature protection circuit comprises a tenth resistor, an eleventh resistor, a twelfth resistor, a fourth comparator and a second MOS tube; the first end of the tenth resistor is connected with the output end of the reference voltage output circuit, the second end of the tenth resistor is respectively connected with the negative input end of the fourth comparator and the first end of the eleventh resistor, the positive input end of the fourth comparator is connected with the output end of the fourth level conversion circuit, and the output end of the fourth comparator is connected with the input end of the fault logic control circuit; the drain electrode of the second MOS tube is respectively connected with the second end of the eleventh resistor and the first end of the twelfth resistor, the source electrode of the second MOS tube is connected with the second end of the twelfth resistor and grounded, and the grid electrode of the second MOS tube is connected with the input end of the fault logic control circuit.
Compared with the related art, the intelligent power module with the driving resistor selection function can drive the rectifier bridge and the IGBT, FRD, IGBT, the driving IC integrates three groups of driving resistors with different resistance values, different signals are input through Rgx according to the requirements of an application scene, a proper driving resistor is selected, and the size of the driving resistor is selected according to the application requirements by one tube, so that the intelligent PFC module with the driving resistor can work in an optimal driving environment. The application flexibility of the PFC module is improved, the anti-interference capability of the PFC circuit is improved, the design of the electric control system is simplified, the reliability of the whole electric control system is improved, and the cost of the whole electric control system is reduced.
Drawings
The present application will be described in detail with reference to the accompanying drawings. The foregoing and other aspects of the application will become more apparent and more readily appreciated from the following detailed description taken in conjunction with the accompanying drawings. In the accompanying drawings:
FIG. 1 is a circuit diagram of an intelligent power module with drive resistor selection according to the present application;
FIG. 2 is a circuit diagram of a PFC driver control circuit according to the present application
FIG. 3 is a partial enlarged view I of FIG. 2;
FIG. 4 is a second enlarged view of a portion of FIG. 2;
fig. 5 is a circuit diagram of the PFC protection circuit according to the present application;
FIG. 6 is a circuit diagram of the temperature protection circuit of the present application;
FIG. 7 is a circuit diagram of a driving resistor selection circuit according to the present application;
FIG. 8 is a diagram showing a relationship between driving resistor selection circuits according to the present application;
FIG. 9 is a circuit diagram of a driving resistor circuit according to the present application;
fig. 10 is a circuit diagram of a driving DRV circuit according to the present application.
Detailed Description
The following describes in detail the embodiments of the present application with reference to the drawings.
The detailed description/examples set forth herein are specific embodiments of the application and are intended to be illustrative and exemplary of the concepts of the application and are not to be construed as limiting the scope of the application. In addition to the embodiments described herein, those skilled in the art will be able to adopt other obvious solutions based on the disclosure of the claims and specification, including any obvious alterations and modifications to the embodiments described herein, all within the scope of the present application.
As shown in fig. 1 to 10, the present invention provides an intelligent power module with a driving resistor selecting function, comprising: a power supply, a PFC drive control circuit 3, a rectifier bridge circuit 1, a protection resistor 4, a thermistor NTC and an IGBT circuit 2. The power supply is used for supplying power to a circuit in the intelligent power module, the rectifier bridge circuit 1 is connected with the power supply, the thermistor NTC and the protection resistor 4 are used for collecting the temperature generated when the PFC driving control circuit 3 works, and the rectifier bridge circuit 1 is used for converting alternating current input by the power supply into direct current and supplying power to the PFC driving control circuit 3 for output.
The power supply is connected to the rectifier bridge circuit 1, VSS port is connected to IGBT circuit 2's first end, PFCL port is connected to IGBT circuit 2's second end, power supply voltage VCC is connected to IGBT circuit 2's third end, PFC drive control circuit 3's output is connected to IGBT circuit 2's fourth end, VDD is connected to protection resistor 4's first end, protection resistor 4's second end is connected respectively PFC drive control circuit 3's TH port with thermistor NTC's first end, thermistor NTC's second end ground connection.
The PFC drive control circuit 3 includes a reference voltage output circuit 301, a first RC filter circuit 311, a second RC filter circuit 312, a plurality of schmitt triggers, a plurality of low pass filters, a plurality of level shifting circuits, an under-voltage protection circuit 302, a PFC protection circuit 308, a temperature protection circuit 309, an RC delay circuit 310, a fault output circuit 303, a fault logic control circuit 307, a driving DRV circuit 305, a driving resistor selection circuit 304, and a driving resistor circuit 306; the reference voltage output circuit 301 is sequentially connected to the input terminals of the undervoltage protection circuit 302 and the fault logic control circuit 307.
In this embodiment, the driving resistor selection circuit 304 includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a first comparator A1, a second comparator A2, a first not gate 0703, a second not gate 0704, and a first and gate 0705.
The first end of the first resistor R1 is connected to the power supply voltage VCC, the second end of the first resistor R1 is connected to the second resistor R2 and the negative input end of the first comparator A1, the second end of the second resistor R2 is grounded, the positive input end of the first comparator A1 and the positive input end of the second comparator A2 are connected to the Rgx port of the PFC driving control circuit 3, the output end of the first comparator A1 is connected to the first end of the third resistor R3, the input end of the first NOT gate 0703 and the first input end of the first and gate 0705, the second end of the third resistor R3 is connected to the power supply voltage VCC, and the output end of the NOT gate is used for outputting a first direct current analog signal;
The first end of the fourth resistor R4 is connected to the power supply voltage VCC, the second end of the fourth resistor R4 is connected to the first end of the fifth resistor R5 and the negative input end of the second comparator A2, the output end of the second comparator A2 is connected to the first end of the sixth resistor R6 and the input end of the second not gate 0704, the second end of the sixth resistor R6 is connected to the power supply voltage VCC, the output end of the second not gate 0704 is connected to the second input end of the first and gate 0705, the output end of the first and gate 0705 is used for outputting a second direct current analog signal, and the output end of the second comparator A2 is also used for outputting a third direct current analog signal.
Specifically, rgx is a 0-3VDC direct current analog signal, which is controlled by the MCU of the system to be input to the driving IC, and the Rgx port of the PFC driving control circuit 3 is connected to the positive input ports of the first comparator A1 and the second comparator A2; the first end of the first resistor R1 is connected with the power supply VCC, the second end of the first resistor R1 is connected with the first end of the second resistor R2, and the connection point is VF1 and is connected to the negative input end of the first comparator A1. The second end of the third resistor R3 is connected to the power supply voltage VCC, the first end of the third resistor R3 is connected to the output end of the first comparator A1, and the second end of the third resistor R3 is connected to the input end of the first not gate 0703, and the output end of the first not gate 0703 is Rgx1, rgx1 for outputting a first dc analog signal. Meanwhile, the output end of the first comparator A1 is connected with a first input end (upper input end) of the first and gate 0705; the first end of the fourth resistor R4 is connected with the power supply voltage VCC, the second end of the fourth resistor R4 is connected with the first end of the fifth resistor R5, and the connection point is VF2 and is connected to the negative input end of the second comparator A2. The second end of the sixth resistor R6 is connected to the power supply voltage VCC, the first end of the sixth resistor R6 is connected to the output end of the second comparator A2, and is connected to the input end of the second not gate 0704, the output end of the second not gate 0704 is connected to the second input end (lower input end) of the first and gate 0705, the output end of the first and gate 0705 is Rgx, rgx2 for outputting a second dc analog signal, and the output end of the second comparator A2 is Rgx, rgx3 for outputting a third dc analog signal.
The driving resistor selection circuit 304 operates as follows:
rgx is a 0-3VDC dc analog signal, two comparators compare threshold voltages VF1 and VF2, here we design threshold voltage VF1< threshold voltage VF2<3VDC,
when Rgx < threshold voltage is VF1, the output of the first comparator A1 is low, and the first not gate 0703 outputs high, i.e., rgx is high; the output of the second comparator A2 is low, i.e. Rgx3 is low; the output of the second comparator A2 is low, the second not gate 0704 is high, the upper input of the first and gate 0705 is low, the lower input of the first and gate 0705 is high, and the output of the first and gate 0705 is low, i.e. Rgx2 is low. Namely, when Rgx < threshold voltage is VF1, rgx is high, rgx is low, rgx3 is low.
When the threshold voltage is VF1< Rgx < and the threshold voltage is VF2, the output of the first comparator A1 is high, and the first not gate 0703 outputs low, that is Rgx is low; the output of the second comparator A2 is low, i.e. Rgx3 is low; the output of the second comparator A2 is low, the second not gate 0704 is high, the upper input of the first and gate 0705 is high, the lower input of the first and gate 0705 is high, and the output of the first and gate 0705 is high, i.e. Rgx2 is high. Namely, when the threshold voltage is VF1< Rgx < threshold voltage is VF2, rgx is low, rgx2 is high, and Rgx3 is low.
When the Rgx > threshold voltage is VF2, the output of the first comparator A1 is high, and the first not gate 0703 outputs low, i.e., rgx1 is low; the output of the second comparator A2 is high, i.e. Rgx3 is high; the output of the second comparator A2 is high, the second not gate 0704 is low, the upper input of the first and gate 0705 is high, the lower input of the first and gate 0705 is low, and the output of the first and gate 0705 is low, i.e. Rgx2 is low. Namely, when Rgx > threshold voltage is VF2, rgx1 is low, rgx2 is low, and Rgx3 is high. The relationship between Rgx, VF1, VF2 and Rgx1, rgx2, rgx3 is shown in fig. 8.
In this embodiment, the driving resistor circuit 306 includes a second and gate 1001, a third and gate 1002, a fourth and gate 1003, a first turn-off driving resistor Rgoff1, a second turn-off driving resistor Rgoff2, a third turn-off driving resistor Rgoff3, a first turn-on driving resistor Rgon1, a second turn-on driving resistor Rgon2, a third turn-on driving resistor Rgon3, a seventh diode D7, an eighth diode D8, and a ninth diode D9;
the output end of the driving DRV circuit 305 is respectively connected to the first input end of the second and gate 1001, the first input end of the third and gate 1002, and the first input end of the fourth and gate 1003, and the first dc analog signal, the second dc analog signal, and the third dc analog signal are respectively output to the second input end of the second and gate 1001, the second input end of the third and gate 1002, and the second input end of the fourth and gate 1003; the plurality of driving resistor branches are as follows:
The output end of the second and gate 1001 is respectively connected to the first end of the first turn-off driving resistor Rgoff1 and the first end of the first turn-on driving resistor Rgon1, the second end of the first turn-off driving resistor Rgoff1 is connected to the negative electrode of the seventh diode D7, and the positive electrode of the seventh diode D7 is connected to the second end of the first turn-on driving resistor Rgon1 and is connected to the output end of the PFC driving control circuit 3;
the output end of the third and gate 1002 is respectively connected to the first end of the second off-driving resistor Rgoff2 and the first end of the second on-driving resistor Rgon2, the second end of the second off-driving resistor Rgoff2 is connected to the negative electrode of the eighth diode D8, and the positive electrode of the eighth diode D8 is connected to the second end of the second on-driving resistor Rgon2 and is connected to the output end of the PFC driving control circuit 3;
the output end of the fourth and gate 1003 is respectively connected to the first end of the third off driving resistor Rgoff3 and the first end of the third on driving resistor Rgon3, the second end of the third off driving resistor Rgoff3 is connected to the negative electrode of the ninth diode D9, and the positive electrode of the ninth diode D9 is connected to the second end of the third on driving resistor Rgon3 and is connected to the output end of the PFC driving control circuit 3.
Specifically, the DRVO signal amplified by the driving DRV circuit 305 is respectively connected to the first input terminal of the second and gate 1001, the first input terminal of the third and gate 1002, and the first input terminal of the fourth and gate 1003, the second input terminal Rgx1 of the second and gate 1001, the second input terminal Rgx2 of the third and gate 1002, the second input terminal Rgx3 of the fourth and gate 1003, and the output terminal of the second and gate 1001 is connected to the first terminal of the first on driving resistor Rgon1 and the first terminal of the first off driving resistor Rgoff 1. The second terminal of the first off-driving resistor Rgoff1 is connected to the cathode of the seventh diode D7. The output terminal of the third and gate 1002 is connected to the first terminal of the second on driving resistor Rgon2 and the first terminal of the second off driving resistor Rgoff 2. The second end of the second turn-off driving resistor Rgoff2 is connected to the cathode of the eighth diode D8. An output terminal of the fourth and gate 1003 is connected to a first terminal of the third on driving resistor Rgon3 and a first terminal of the third off driving resistor Rgoff 3. The second terminal of the first off-driving resistor Rgoff3 is connected to the cathode of the ninth diode D9. The positive electrode of the seventh diode D7, the second end of the first turn-on driving resistor Rgon1, the positive electrode of the eighth diode D8, the second end of the second turn-on driving resistor Rgon2, the positive electrode of the ninth diode D9, and the second end of the third turn-on driving resistor Rgon3 are connected together to serve as the output end of the driving resistor circuit 306.
Driving resistor circuit 306 operates on the principle:
when Rgx 1=1, rgx2=0, and rgx3=0, the driving resistor circuit 306 composed of one end of the first on driving resistor Rgon1, the first off driving resistor Rgoff1, and the seventh diode D7 is active, and the other driving resistors are inactive.
When Rgx 1=0, rgx2=1, and rgx3=0, the driving resistor circuit 306 composed of one end of the second on driving resistor Rgon2, the second off driving resistor Rgoff2, and the eighth diode D8 is active, and the other driving resistors are inactive.
When Rgx 1=0, rgx2=0, and rgx3=1, the driving resistor circuit 306 composed of one end of the third on driving resistor Rgon3, the third off driving resistor Rgoff3, and the ninth diode D9 is active, and the other driving resistors are inactive.
Therefore, different driving resistor branches can be selected to drive by controlling the voltage of the direct current analog signal Rgx so as to adapt to different application scenes. The selection principle of the on driving resistor Rgon is as follows:
the driving resistor Rg which is as small as possible is selected, so that the switching speed is ensured to be as high as possible; and the driving resistor Rg as large as possible is selected, so that the driving circuit is ensured not to vibrate.
In engineering, the reference value of the official manual is generally selected from the reference value to the double value of the reference value, and is determined through experiments, and the empirically selected value is 1.2-1.4 times of the official data.
The selection principle of the off-drive resistor Rgoff is as follows:
rgoff is selected to be too small, di/dt is too large, peak voltage is too high due to parasitic inductance when the IGBT is easily turned off, the risk of high-voltage breakdown of the IGBT is increased, and meanwhile, a harsher absorption capacitor is needed to absorb the peak voltage. In addition, the freewheeling current and the reverse recovery current of the polar tube are too large, so that the risk of breakdown of the diode is caused.
Dead time control, rgoff, increases resulting in a turn-off falling edge time greater than the dead time control minimum.
An increase in Rgoff and an increase in switching losses; different driving resistances are configured on and off.
In this embodiment, the driving DRV circuit 305 includes a driving circuit 3061, a driving resistor Rgx and a second IGBT3062, an input end of the driving circuit 3061 is connected to the first level conversion circuit 323, an output end of the driving circuit is connected to a first end of the driving resistor Rgx, a second end of the driving resistor Rgx is connected to a control end of the second IGBT3062, a first end of the second IGBT3062 is grounded, and a second end of the second IGBT3062 is connected to an input end of the driving resistor circuit 306.
Wherein, the reference voltage is outputted to the under-voltage protection circuit 302 through the reference voltage output circuit 301, and outputted to the fault logic control circuit 307 through the under-voltage protection circuit 302. Alternatively, the PFC drive control circuit 3 has a supply voltage TYPB of typically 15V, and must generate a VREG of 7V to 8V in order to receive a logic 1 signal of 5V from the MCU or the like. More optionally, a 7.2V VREG signal with good temperature characteristics is generated.
The RC filter circuit is a Resistor-capacitor circuit (English: resistor-Capacitance circuit), and the RC filter circuit is a filter circuit with strong passive anti-interference performance, which is composed of a Resistor and a capacitor, and is used for removing unnecessary high-frequency components in an input signal and removing high-frequency interference.
By letting the input PWM IN, ITRIP, TVC, EN both pass through the schmitt trigger first, the level noise of the input circuit is filtered, with a logic 0 maximum of 0.8V and a logic 1 minimum of 2.9V. Wherein logic 0 and logic 1 are assigned values.
Meanwhile, in order to filter the high-frequency noise of the input circuit and to provide enough charging time for the input voltage VB, the driven back-end circuit is prevented from operating in a state where the input voltage VB is insufficient (which reduces the efficiency of the back-end circuit), and the frequency range of the input signal needs to be limited to filter the signal with an excessively high frequency. Signals generally above 600 KHz-700 KHz should be filtered out.
The level conversion circuit is used for converting the voltage from VREG voltage (reference voltage) to the power supply voltage VCC after performing schmitt trigger and low-pass filtering.
The undervoltage protection circuit 302 is used to stop the driving IC (keep the output in logic 0 state) when the voltage is too low, so as to protect the subsequent circuit. Therefore, in the low voltage region, there should be a low voltage protection circuit for detecting the VCC level. When the power supply voltage VCC starts to fall from a high potential and is lower than 13V, outputting a holding logic 0; when the supply voltage VCC rises from the low point, above 13.7V, the output remains logic 1. I.e. there is a difference of 0.7V between them. This is mainly to better protect the subsequent circuits, and the output will not go high until the supply voltage is indeed high enough. In consideration of power supply noise, the RC delay circuit 310 should be added at the end of the circuit, so that no malfunction occurs in the output when the power supply voltage due to the power supply noise is instantaneously lowered.
The PFC protection circuit 308 is configured to perform an overcurrent protection function for the entire circuit.
The temperature protection circuit 309 is used to implement a temperature protection function.
The fault logic control circuit 307 receives fault signals of the functional circuits, performs fault processing according to the fault signals, and turns off the corresponding functions or turns off all functions of the driving IC according to the importance of the fault, thereby protecting the driving IC and the whole application circuit.
When the undervoltage protection function signal UVLO is 0, the fault logic control circuit 307 outputs a fault signal to the fault output circuit 303, and meanwhile, the driving IC of the PFC driving control circuit 3 enters the undervoltage protection function, turns off the six PWM waves of the driving IC, and the PFCTRIP current protection function, the temperature protection function, and other functional fault signals 1 are normal and fault-free, while when 0, the fault logic control circuit 307 outputs a fault signal to the fault output circuit 303, and meanwhile, the driving IC also enters the corresponding functional protection, and the driving IC stops PWM wave output and stops working.
The fault output circuit 303 is a MOS transistor, the base electrode of the MOS transistor is connected to the output end of the fault logic control circuit 307, the fault logic control circuit 307 controls the on and off of the fault output MOS, the D electrode of the MOS transistor is suspended, a pull-up resistor is required to be added outside the HVIC, and when the fault logic control circuit 307 outputs 1, the MOS transistor is turned on, and a FO signal is output to external equipment. When the fault logic control circuit 307 outputs 0 (the driving IC has no fault), the MOS transistor is turned off and the FO signal is high.
The plurality of schmitt triggers includes a first schmitt trigger 313, a second schmitt trigger 314, a third schmitt trigger 315, a fourth schmitt trigger 316, and a fifth schmitt trigger 317;
the plurality of low pass filters includes a first low pass filter 318, a second low pass filter 319, a third low pass filter 320, a fourth low pass filter 321, and a fifth low pass filter 322;
the plurality of level shift circuits includes a first level shift circuit 323, a second level shift circuit 324, a third level shift circuit 325, a fourth level shift circuit 326, and a fifth level shift circuit 327;
the first RC filter circuit 311 is electrically connected to the first schmitt trigger 313, the first low-pass filter 318, the first level shifter circuit 323, the driving DRV circuit 305, and the driving resistor circuit 306 in this order; the second RC filter 312 is electrically connected to the second schmitt trigger 314, the second low-pass filter 319, the second level shifter 324, the driving resistor selection circuit 304, and the driving resistor circuit 306 in this order;
the third schmitt trigger 315 is electrically connected to the input ends of the third low-pass filter 320, the third level conversion circuit 325, the PFC protection circuit 308 and the fault logic control circuit 307 in sequence;
The fourth schmitt trigger 316 is electrically connected to the input ends of the fourth low-pass filter 321, the fourth level shifter 326, the temperature protection circuit 309 and the fault logic control circuit 307 in sequence;
the fifth schmitt trigger 317 is electrically connected to the input ends of the fifth low-pass filter 322, the fifth level shifter 327, the RC delay circuit 310 and the fault logic control circuit 307 in sequence;
the first end of the fault output circuit 303 is connected to the FO port, the second end of the fault output circuit 303 is grounded, the third end of the fault output circuit 303 is connected to the input end of the fault logic control circuit 307, the output end of the fault logic circuit is connected to the input end of the driving DRV circuit 305, the output end of the driving DRV circuit 305 is connected to the input end of the driving resistor circuit 306, and the output end of the driving resistor circuit 306 is used as the output end of the PFC driving control circuit 3.
Specifically, the driving DRV circuit 305 amplifies the PWM wave of the driving signal input from the application system MCU to the PFCIGBT through the schmitt trigger shaping, the filtering circuit filtering, and converting the PWM wave into the PWM signal of 0-15V, so that the PWM wave has the driving PWM signal capable of driving the IGBT and is controlled by the output signal of the fault logic control circuit 307. When the output signal of the failure logic control circuit 307 is 1, the driving DRV circuit 305 allows the PWM signal to be output; when the output signal of the failure logic control circuit 307 is 0, the drive DRV circuit 305 does not output a PWM signal. The driving resistor selection circuit 304 is used for controlling the driving resistor circuit 306, so that the driving resistor circuit 306 can switch different driving resistors according to corresponding scenes, and a better driving effect is achieved.
This is achieved by integrating the rectifier bridge, IGBT, FRD, IGBT driver ICs together. The IGBT driving IC integrates three groups of driving resistors with different resistance values, different signals are input through Rgx according to the requirements of application scenes, and proper driving resistors are selected, so that PFC modules can play optimal performances in different application fields, flexibility and reliability of PFC application are improved, anti-interference capability of a PFC circuit is improved, a plurality of modules are placed in one radiator, design of an electric control system is simplified, reliability of the whole electric control system is improved, and cost of the whole electric control system is reduced.
In this embodiment, the rectifier bridge circuit 1 includes a first diode D1, a second diode D2, a third diode D3, and a fourth diode D4, where a cathode of the first diode D1 is connected to an anode of the second diode D2 to be used as an AC S port of the intelligent power module, an anode of the third diode D3 is connected to a cathode of the fourth diode D4 to be used as an AC R port of the intelligent power module, an anode of the first diode D1 is connected to an anode of the fourth diode D4 to be used as a DB N port of the intelligent power module, and an anode of the second diode D2 is connected to an anode of the third diode D3 to be used as a DB P port of the intelligent power module.
In this embodiment, the IGBT circuit 2 includes: IGBT1, fifth diode D5, and sixth diode D6; the grid electrode of the IGBT1 is connected with the output end of the PFC driving control circuit 3, the source electrode of the IGBT1 is connected with the positive electrode of the fifth diode D5, the drain electrode of the IGBT1 is respectively connected with the negative electrode of the fifth diode D5 and the positive electrode of the sixth diode D6, and the negative electrode of the sixth diode D6 is connected with the power supply voltage VCC.
In this embodiment, the PFC protection circuit 308 includes a seventh resistor 0501, an eighth resistor 0502, a ninth resistor 0503, a third comparator 0506, and a first MOS transistor 0505; a first end of the seventh resistor 0501 is connected to the output end of the reference voltage output circuit 301, a second end of the seventh resistor 0501 is connected to the negative input end of the third comparator 0506 and the first end of the eighth resistor 0502, a positive input end of the third comparator 0506 is connected to the output end of the third level conversion circuit 325, and an output end of the third comparator 0506 is connected to the input end of the fault logic control circuit 307; the drain electrode of the first MOS transistor 0505 is connected to the second end of the eighth resistor 0502 and the first end of the ninth resistor 0503, the source electrode of the first MOS transistor 0505 is connected to the second end of the ninth resistor 0503 and grounded, and the gate electrode of the first MOS transistor 0505 is connected to the input end of the fault logic control circuit 307.
Specifically, the current detection signal ITRIP is input to the positive input end of the third comparator 0506, VREF is divided by the seventh resistor 0501, the eighth resistor 0502, and the ninth resistor 0503, and then a reference voltage signal of the dividing point 0504 is obtained and input to the negative input end of the third comparator 0506; the end D of the first MOS transistor 0505 is connected with the connection ends of the eighth resistor 0502 and the ninth resistor 0503, and the end S of the source electrode of the first MOS transistor 0505 is connected with the second end of the ninth resistor 0503 to be grounded. The output end of the third comparator 0506 is connected to the fault logic control circuit 307 and fed back to the upper bridge and lower bridge driving circuits, and when the current detection signal PFCTRIP is higher than the reference voltage, the fault logic control circuit 307 will turn off the upper bridge and the lower bridge simultaneously. The feedback end of the fault logic control circuit 307 is connected to the gate G of the first MOS transistor 0505, and controls the switching of the first MOS transistor. When the voltage higher than the reference voltage does not exist, the first MOS tube 0505 is turned off, and when the voltage higher than the reference voltage exists, the first MOS tube 0505 is turned on, so that a hysteresis effect is formed, and an overcurrent protection function is realized.
In this embodiment, the temperature protection circuit 309 includes a tenth resistor 0601, an eleventh resistor 0602, a twelfth resistor 0603, a fourth comparator 0606, and a second MOS transistor 0605; a first end of the tenth resistor 0601 is connected to the output end of the reference voltage output circuit 301, a second end of the tenth resistor 0601 is connected to the negative input end of the fourth comparator 0606 and the first end of the eleventh resistor 0602, a positive input end of the fourth comparator 0606 is connected to the output end of the fourth level conversion circuit 326, and an output end of the fourth comparator 0606 is connected to the input end of the fault logic control circuit 307; the drain electrode of the second MOS transistor 0605 is connected to the second end of the eleventh resistor 0602 and the first end of the twelfth resistor 0603, the source electrode of the second MOS transistor 0605 is connected to the second end of the twelfth resistor 0603 and grounded, and the gate electrode of the second MOS transistor 0605 is connected to the input end of the fault logic control circuit 307.
Specifically, the temperature detection TH signal is input to the positive input end of the fourth comparator 0606, VREF is divided by the tenth resistor 0601, the eleventh resistor 0602 and the twelfth resistor 0603, and then a reference voltage signal of the division point 0604 is obtained and is input to the negative input end of the fourth comparator 0606; the D end of the second MOS transistor 0605 is connected to the connection end of the eleventh resistor 0602 and the twelfth resistor 0603, and the S end of the second MOS transistor 0605 is connected to the ground with the second end of the twelfth resistor 0603. The output terminal of the fourth comparator 0606 is connected to the fault logic control circuit 307, and is fed back to the upper bridge and lower bridge driving circuits, and when the temperature detection signal TH is higher than the reference voltage, the fault logic control circuit 307 turns off the upper bridge and the lower bridge at the same time. The feedback end of the fault logic control circuit 307 is connected to the gate G of the second MOS transistor 0605 to control the switching of the second MOS transistor. When the voltage higher than the reference voltage is not applied, the second MOS transistor 0605 is turned off, and when the voltage higher than the reference voltage is applied, the second MOS transistor 0605 is turned on. A hysteresis effect is formed, and a temperature protection function is realized.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any such modifications, equivalents, and improvements that fall within the spirit and principles of the present invention are intended to be covered by the following claims.

Claims (8)

1. An intelligent power module with drive resistor selection function, comprising: the power supply, PFC drive control circuit, rectifier bridge circuit, protection resistor, thermistor NTC and IGBT circuit;
the rectifier bridge circuit is connected with the power supply, the thermistor NTC and the protection resistor are used for collecting the temperature generated when the PFC drive control circuit works, and the rectifier bridge circuit is used for converting alternating current input by the power supply into direct current and providing power supply voltage VCC for the PFC drive control circuit;
the PFC drive control circuit comprises a drive DRV circuit, a drive resistor selection circuit and a drive resistor circuit, wherein the output end of the drive DRV circuit and the output end of the drive resistor selection circuit are electrically connected with the input end of the drive resistor circuit, and the output end of the drive resistor circuit is used as the output end of the PFC drive control circuit;
the driving resistor selection circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a first comparator, a second comparator, a first NOT gate, a second NOT gate and a first AND gate;
the first end of the first resistor is connected with the power supply voltage VCC, the second end of the first resistor is respectively connected with the second resistor and the negative input end of the first comparator, the second end of the second resistor is grounded, the positive input end of the first comparator and the positive input end of the second comparator are respectively connected with the Rgx port of the PFC driving control circuit, the output end of the first comparator is respectively connected with the first end of the third resistor, the input end of the first NOT gate and the first input end of the first AND gate, the second end of the third resistor is connected with the power supply voltage VCC, and the output end of the NOT gate is used for outputting a first direct current analog signal;
The first end of the fourth resistor is connected with the power supply voltage VCC, the second end of the fourth resistor is respectively connected with the first end of the fifth resistor and the negative input end of the second comparator, the output end of the second comparator is respectively connected with the first end of the sixth resistor and the input end of the second NOT gate, the second end of the sixth resistor is connected with the power supply voltage VCC, the output end of the second NOT gate is connected with the second input end of the first AND gate, the output end of the first AND gate is used for outputting a second direct current analog signal, and the output end of the second comparator is also used for outputting a third direct current analog signal;
the driving resistor circuit comprises a plurality of driving resistor branches, and the driving resistor selection circuit is used for controlling the driving resistor circuit to switch between the driving resistor branches by outputting different direct current analog signals;
the driving resistor circuit comprises a second AND gate, a third AND gate, a fourth AND gate, a first turn-off driving resistor, a second turn-off driving resistor, a third turn-off driving resistor, a first turn-on driving resistor, a second turn-on driving resistor, a third turn-on driving resistor, a seventh diode, an eighth diode and a ninth diode;
The output end of the driving DRV circuit is respectively connected with the first input end of the second AND gate, the first input end of the third AND gate and the first input end of the fourth AND gate, and the first direct current analog signal, the second direct current analog signal and the third direct current analog signal are respectively output to the second input end of the second AND gate, the second input end of the third AND gate and the second input end of the fourth AND gate;
the output end of the second AND gate is respectively connected with the first end of the first turn-off driving resistor and the first end of the first turn-on driving resistor, the second end of the first turn-off driving resistor is connected with the negative electrode of the seventh diode, and the positive electrode of the seventh diode is connected with the second end of the first turn-on driving resistor and is connected to the output end of the PFC driving control circuit;
the output end of the third AND gate is respectively connected with the first end of the second turn-off driving resistor and the first end of the second turn-on driving resistor, the second end of the second turn-off driving resistor is connected with the negative electrode of the eighth diode, and the positive electrode of the eighth diode is connected with the second end of the second turn-on driving resistor and is connected to the output end of the PFC driving control circuit;
The output end of the fourth AND gate is respectively connected with the first end of the third turn-off driving resistor and the first end of the third turn-on driving resistor, the second end of the third turn-off driving resistor is connected with the negative electrode of the ninth diode, and the positive electrode of the ninth diode is connected with the second end of the third turn-on driving resistor and is connected to the output end of the PFC driving control circuit.
2. The intelligent power module with driving resistor selection function according to claim 1, wherein a first end of the IGBT circuit is connected to a VSS port, a second end of the IGBT circuit is connected to a PFCL port, a third end of the IGBT circuit is connected to the power supply voltage VCC, a fourth end of the IGBT circuit is connected to an output end of the PFC driving control circuit, a first end of the protection resistor is connected to VDD, a second end of the protection resistor is connected to a TH port of the PFC driving control circuit and a first end of the thermistor, respectively, and a second end of the thermistor is grounded.
3. The intelligent power module with drive resistance selection function according to claim 1, wherein the PFC drive control circuit further comprises a reference voltage output circuit, a first RC filter circuit, a second RC filter circuit, a plurality of schmitt triggers, a plurality of low pass filters, a plurality of level shifting circuits, an under-voltage protection circuit, a PFC protection circuit, a temperature protection circuit, an RC delay circuit, a fault output circuit, and a fault logic control circuit; the reference voltage output circuit is sequentially connected with the input ends of the undervoltage protection circuit and the fault logic control circuit;
The plurality of schmitt triggers comprise a first schmitt trigger, a second schmitt trigger, a third schmitt trigger, a fourth schmitt trigger and a fifth schmitt trigger;
the plurality of low pass filters include a first low pass filter, a second low pass filter, a third low pass filter, a fourth low pass filter, and a fifth low pass filter;
the plurality of level shifting circuits include a first level shifting circuit, a second level shifting circuit, a third level shifting circuit, a fourth level shifting circuit, and a fifth level shifting circuit;
the first RC filter circuit is electrically connected with the first Schmitt trigger, the first low-pass filter, the first level conversion circuit, the driving DRV circuit and the driving resistor circuit in sequence; the second RC filter circuit is electrically connected with the second Schmitt trigger, the second low-pass filter, the second level conversion circuit, the driving resistor selection circuit and the driving resistor circuit in sequence;
the third schmitt trigger is electrically connected with the input ends of the third low-pass filter, the third level conversion circuit, the PFC protection circuit and the fault logic control circuit in sequence;
The fourth schmitt trigger is electrically connected with the input ends of the fourth low-pass filter, the fourth level conversion circuit, the temperature protection circuit and the fault logic control circuit in sequence;
the fifth schmitt trigger is electrically connected with the input ends of the fifth low-pass filter, the fifth level conversion circuit, the RC delay circuit and the fault logic control circuit in sequence;
the first end of the fault output circuit is connected with the FO port, the second end of the fault output circuit is grounded, the third end of the fault output circuit is connected with the input end of the fault logic control circuit, and the output end of the fault logic control circuit is connected with the input end of the driving DRV circuit.
4. The intelligent power module with driving resistance selection function according to claim 1, wherein the rectifier bridge circuit includes a first diode, a second diode, a third diode, and a fourth diode, a cathode of the first diode is connected with an anode of the second diode as an AC S port of the intelligent power module, an anode of the third diode is connected with a cathode of the fourth diode as an AC R port of the intelligent power module, an anode of the first diode is connected with an anode of the fourth diode as a DB N port of the intelligent power module, and a cathode of the second diode is connected with a cathode of the third diode as a DB P port of the intelligent power module.
5. The intelligent power module with drive resistance selection function of claim 1, wherein the IGBT circuit comprises: IGBT1, fifth diode, and sixth diode; the grid electrode of the IGBT1 is connected with the output end of the PFC driving control circuit, the source electrode of the IGBT1 is connected with the positive electrode of the fifth diode, the drain electrode of the IGBT1 is respectively connected with the negative electrode of the fifth diode and the positive electrode of the sixth diode, and the negative electrode of the sixth diode is connected with the power supply voltage VCC.
6. The intelligent power module with driving resistor selection function according to claim 3, wherein the driving DRV circuit comprises a driving circuit, a driving resistor Rgx and a second IGBT, wherein an input terminal of the driving circuit is connected to the first level shifter circuit, an output terminal of the driving circuit is connected to a first terminal of the driving resistor Rgx, a second terminal of the driving resistor Rgx is connected to a control terminal of the second IGBT, a first terminal of the second IGBT is grounded, and a second terminal of the second IGBT is connected to an input terminal of the driving resistor circuit.
7. The intelligent power module with driving resistor selection function according to claim 3, wherein the PFC protection circuit comprises a seventh resistor, an eighth resistor, a ninth resistor, a third comparator, and a first MOS transistor; the first end of the seventh resistor is connected with the output end of the reference voltage output circuit, the second end of the seventh resistor is respectively connected with the negative input end of the third comparator and the first end of the eighth resistor, the positive input end of the third comparator is connected with the output end of the third level conversion circuit, and the output end of the third comparator is connected with the input end of the fault logic control circuit; the drain electrode of the first MOS tube is respectively connected with the second end of the eighth resistor and the first end of the ninth resistor, the source electrode of the first MOS tube is connected with the second end of the ninth resistor and grounded, and the grid electrode of the first MOS tube is connected with the input end of the fault logic control circuit.
8. The intelligent power module with driving resistor selection function according to claim 3, wherein the temperature protection circuit comprises a tenth resistor, an eleventh resistor, a twelfth resistor, a fourth comparator and a second MOS transistor; the first end of the tenth resistor is connected with the output end of the reference voltage output circuit, the second end of the tenth resistor is respectively connected with the negative input end of the fourth comparator and the first end of the eleventh resistor, the positive input end of the fourth comparator is connected with the output end of the fourth level conversion circuit, and the output end of the fourth comparator is connected with the input end of the fault logic control circuit; the drain electrode of the second MOS tube is respectively connected with the second end of the eleventh resistor and the first end of the twelfth resistor, the source electrode of the second MOS tube is connected with the second end of the twelfth resistor and grounded, and the grid electrode of the second MOS tube is connected with the input end of the fault logic control circuit.
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