An integrated drive circuit and intelligent power module with shortened drive loop routing

Abstract

The present invention relates to an integrated driving circuit for shortening the routing of a driving circuit, comprising a control chip, a PFC control unit, an inverter control unit, a bootstrap unit and a rectifier; the PFC control unit comprises a first driving circuit and a diode D1; the inverter control unit comprises a driving circuit, an upper arm bridge driving circuit and a lower arm bridge driving circuit, and the lower arm bridge driving circuit is connected to the control chip through the driving circuit; the bootstrap unit comprises a first capacitor component, a second capacitor component and a third capacitor component; the rectifier is simultaneously connected to an external DC-P terminal, an external DC-N terminal, an external AC1 terminal and an external AC2 terminal. The integrated driving circuit for shortening the routing of the driving circuit of the present invention has a high degree of integration of each unit module, shortens the routing distance of the driving circuit, reduces the parasitic parameters of the circuit, and thus reduces the resonance caused by high-frequency switching, and the area of ​​the signal circuit can be reduced by a shorter routing, thereby reducing electromagnetic radiation and electromagnetic interference to the outside world.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic circuits, and in particular relates to an integrated drive circuit and an intelligent power module that shorten the routing of a drive loop. Background Art

[0002] Intelligent Power Module (IPM) is a power drive product that combines power electronics and integrated circuit technology. It has the advantages of high current, low saturation voltage, high withstand voltage of GTR (high power transistor), high input impedance, high switching frequency and low driving power of MOSFET (field effect transistor). In addition, IPM integrates logic, control, detection and protection circuits, which is easy to use, shortens development time, enhances system reliability, and adapts to the development trend of today's power devices.

[0003] However, the intelligent power modules currently on the market integrate drive circuit functions, whether they are DBC (ceramic substrate) or IMS (aluminum-based copper clad laminate) architectures. Without exception, the drive circuits are routed from the peripheral circuits of the module body, which not only increases the routing length and complexity of the signal transmission path, but also causes interference and distortion in the signal transmission process, making the drive signal more unstable and more prone to false triggering, reducing the control accuracy and reliability of the system.

[0004] Therefore, the present invention provides an integrated drive circuit and an intelligent power module that shorten the drive loop routing to solve the above technical problems. Summary of the invention

[0005] In view of the above problems, the purpose of the present invention is to provide an integrated drive circuit and an intelligent power module that shorten the drive loop routing, which can shorten the drive loop routing distance, reduce loop parasitic parameters, and reduce resonance caused by high-frequency switching. The shorter routing can reduce the area of ​​the signal loop, thereby reducing electromagnetic radiation and electromagnetic interference to the outside world.

[0006] The present invention provides an integrated driving circuit for shortening the driving loop wiring, comprising:

[0007] A control chip, comprising a VSS terminal, a VB1 terminal, a UVS1 terminal, a VB2 terminal, a UVS2 terminal, a VB3 terminal, a UVS3 terminal, an FPCOUT terminal, a H01 terminal, a H02 terminal and a H03 terminal;

[0008] The PFC control unit comprises a first drive circuit (206) and a diode D1, wherein the first drive circuit (206) is connected to the positive terminal, the external PFC terminal and the external -VCC terminal of the diode D1, and the negative terminal of the diode D1 is connected to the external high voltage input terminal VCC;

[0009] Inverter control unit: it includes a drive circuit, an upper arm bridge drive circuit and a lower arm bridge drive circuit connected to the upper arm bridge drive circuit, wherein one end of the upper arm bridge drive circuit away from the lower arm bridge drive circuit is connected to the external high voltage input terminal VCC, the negative terminal of the diode D1 and the control chip, and one end of the lower arm bridge drive circuit away from the upper arm bridge drive circuit is connected to the external -UVW terminal and the control chip at the same time, wherein the lower arm bridge drive circuit is connected to the VSS terminal of the control chip through the drive circuit;

[0010] A bootstrap unit: comprising a first capacitor component, a second capacitor component and a third capacitor component, wherein the first capacitor component is simultaneously connected to the VB1 end of the control chip, the UVS1 end of the control chip, the external bootstrap guide pin UVS1 end, the external bootstrap guide pin VB1 end, the upper arm bridge drive circuit and the lower arm bridge drive circuit, the second capacitor component is simultaneously connected to the VB2 end of the control chip, the UVS2 end of the control chip, the external bootstrap guide pin UVS2 end, the external bootstrap guide pin VB2 end, the upper arm bridge drive circuit and the lower arm bridge drive circuit, and the third capacitor component is simultaneously connected to the VB3 end of the control chip, the UVS3 end of the control chip, the external bootstrap guide pin UVS3 end, the external bootstrap guide pin VB3 end, the upper arm bridge drive circuit and the lower arm bridge drive circuit;

[0011] Rectifier: It is connected to the external DC-P terminal, the external DC-N terminal, the external AC1 terminal and the external AC2 terminal at the same time.

[0012] Preferably, the first driving circuit (206) comprises a transistor G7, a diode D2 and a driving resistor Q7-R, the drain of the transistor G7 is simultaneously connected to the positive terminal of the diode D1, the negative terminal of the diode D2 and the external PFC terminal, the gate of the transistor G7 is connected to the first terminal of the driving resistor Q7-R, the source of the transistor G7 is simultaneously connected to the external -VCC terminal and the positive terminal of the diode D2, and the second terminal of the driving resistor Q7-R is connected to the FPCOUT terminal of the control chip.

[0013] Preferably, the upper arm bridge drive circuit comprises a first IGBT tube drive circuit (200), a second IGBT tube drive circuit (201) and a third IGBT tube drive circuit (202), wherein the first IGBT tube drive circuit (200) comprises a transistor G1, a drive resistor Q1-R and a diode D3, the second IGBT tube drive circuit (201) comprises a transistor G2, a drive resistor Q2-R and a diode D4, and the third IGBT tube drive circuit (202) comprises a transistor G3, a drive resistor Q3-R and a diode D 5, the lower arm bridge drive circuit comprises a fourth IGBT tube drive circuit (203), a fifth IGBT tube drive circuit (204) and a sixth IGBT tube drive circuit (205), the fourth IGBT tube drive circuit (203) comprises a triode G4, a drive resistor Q4-R and a diode D6, the fifth IGBT tube drive circuit (204) comprises a triode G5, a drive resistor Q5-R and a diode D7, and the sixth IGBT tube drive circuit (205) comprises a triode G6, a drive resistor Q6-R and a diode D8;

[0014] The drain of the transistor G1 is simultaneously connected to the cathode end of the diode D3, the cathode end of the diode D4, the cathode end of the diode D5, the cathode end of the diode D1, the drain of the transistor G2, the drain of the transistor G3 and the external high voltage input terminal VCC, the gate of the transistor G1 is connected to the first end of the driving resistor Q1-R, the second end of the driving resistor Q1-R is connected to the H01 terminal of the control chip, and the source of the transistor G1 is simultaneously connected to the diode D The positive terminal of the transistor G3, the drain of the transistor G4 and the negative terminal of the diode D6 are connected, the gate of the transistor G2 is connected to the first end of the driving resistor Q2-R, the second end of the driving resistor Q2-R is connected to the H02 terminal of the control chip, the source of the transistor G2 is simultaneously connected to the positive terminal of the diode D4, the drain of the transistor G5 and the negative terminal of the diode D7, the gate of the transistor G3 is connected to the first end of the driving resistor Q3-R, the gate of the driving resistor Q3-R is ... The second end is connected to the H03 end of the control chip, the source of the transistor G3 is simultaneously connected to the positive end of the diode D5, the drain of the transistor G6 and the negative end of the diode D8, the gate of the transistor G4 is connected to the first end of the driving resistor Q4-R, the second end of the driving resistor Q4-R is connected to the L01 end of the control chip, the source of the transistor G4 is simultaneously connected to the positive end of the diode D6, the positive end of the diode D7, the positive end of the diode D8, The source of the transistor G5, the source of the transistor G6 and the external -UVW end are connected to each other and then connected to the VSS end of the control chip through the drive circuit. The gate of the transistor G5 is connected to the first end of the drive resistor Q5-R, and the second end of the drive resistor Q5-R is connected to the L02 end of the control chip. The gate of the transistor G6 is connected to the first end of the drive resistor Q6-R, and the second end of the drive resistor Q6-R is connected to the L03 end of the control chip.

[0015] Preferably, the first capacitor component includes a capacitor C209 and a capacitor C212, the first end of the capacitor C209 is simultaneously connected to the first end of the capacitor C212, the UVS1 end of the control chip, the external bootstrap guide pin UVS1 end, the external bootstrap guide pin VB1 end, the source of the transistor G1 and the drain of the transistor G4, and the second end of the capacitor C209 is simultaneously connected to the second end of the capacitor C212 and the VB1 end of the control chip; the second capacitor component includes a capacitor C210 and a capacitor C213, the first end of the capacitor C210 is simultaneously connected to the first end of the capacitor C213, the UVS2 end of the control chip, the external bootstrap guide pin UVS2 The first end of the capacitor C211 is connected to the first end of the capacitor C214, the UVS3 end of the control chip, the external bootstrap guide pin UVS3 end, the external bootstrap guide pin VB3 end, the source of the transistor G3 and the drain of the transistor G6, and the second end of the capacitor C211 is connected to the second end of the capacitor C214 and the VB2 end of the control chip.

[0016] Preferably, the rectifier includes a diode D9, a diode D10, a diode D11 and a diode D12, the negative terminal of the diode D9 is connected to the negative terminal of the diode D10 and the external DC-P terminal at the same time, the positive terminal of the diode D9 is connected to the positive terminal of the diode D10, the negative terminal of the diode D11, the negative terminal of the diode D12, the external AC1 terminal and the external AC2 terminal at the same time, and the positive terminal of the diode D11 is connected to the positive terminal of the diode D12 and the external DC-N terminal at the same time.

[0017] Preferably, the driving circuit includes a driving resistor R1, a parasitic inductor L1, an IGBT power tube Q1, a parasitic inductor L2, and a parasitic inductor L3. The first end of the IGBT power tube Q1 is connected to the positive terminal of the diode D6, the positive terminal of the diode D7, the positive terminal of the diode D8, the source of the transistor G4, the source of the transistor G5, the source of the transistor G6, and the external -UVW terminal. The second end of the IGBT power tube Q1 is connected to the first end of the parasitic inductor L1, the second end of the parasitic inductor L1 is connected to the first end of the driving resistor R1, the third end of the IGBT power tube Q1 is connected to the first end of the parasitic inductor L2, the second end of the parasitic inductor L2 is connected to the first end of the parasitic inductor L3, and the second end of the driving resistor R1 and the second end of the parasitic inductor L3 are simultaneously connected to the VSS terminal of the control chip.

[0018] The present invention also provides an intelligent power module, which comprises a metal substrate plate, a module plastic package body, the integrated drive circuit for shortening the drive loop routing, a bootstrap circuit (407) connected to the integrated drive circuit for shortening the drive loop routing and having a VB1&U port, a VB2&V port and a VB3&W port, a filter capacitor C401, a bootstrap capacitor C402, a filter capacitor C403, a bootstrap capacitor C404, a filter capacitor C405, a bootstrap capacitor C406, a load motor (408) and a lead terminal (410), wherein the module plastic package body, the integrated drive circuit for shortening the drive loop routing and the bootstrap circuit (407) are arranged on the metal substrate plate, and the VB1&U port of the bootstrap circuit (407) is connected to the filter capacitor C405, the bootstrap capacitor C406 in sequence. The VB2&V port of the bootstrap circuit (407) is connected to the filter capacitor C403, the bootstrap capacitor C404 and the V phase end of the load motor (408) in sequence, the VB3&W port of the bootstrap circuit (407) is connected to the filter capacitor C401, the bootstrap capacitor C402 and the W phase end of the load motor (408) in sequence, and the lead terminal includes an A terminal connected to the U phase end, the V phase end and the W phase end of the load motor (408), a B terminal connected to the VSS end and the -UVW end of the integrated drive circuit for shortening the drive loop routing, and a C terminal connected to the H01-H03 ends of the integrated drive circuit for shortening the drive loop routing.

[0019] Preferably, the package type of the filter capacitor C401, the filter capacitor C403 and the filter capacitor C405 is 0402 package type, and the capacitance of the filter capacitor C401, the filter capacitor C403 and the filter capacitor C405 is 1nf; the package type of the bootstrap capacitor C402, the bootstrap capacitor C404 and the bootstrap capacitor C406 is 1206 package type, and the capacitance of the bootstrap capacitor C402, the bootstrap capacitor C404 and the bootstrap capacitor C406 is 22nf.

[0020] Compared with the related art, the present invention provides an integrated drive circuit and an intelligent power module for shortening the drive loop routing, wherein the integrated drive circuit for shortening the drive loop routing includes a control chip, a PFC control unit, an inverter control unit, a bootstrap unit and a rectifier; the PFC control unit includes a first drive circuit 206 and a diode D1; the inverter control unit includes a drive loop, an upper arm bridge drive circuit and a lower arm bridge drive circuit, and the lower arm bridge drive circuit is connected to the control chip through the drive loop; the bootstrap unit includes a first capacitor component, a second capacitor component and a third capacitor component; the rectifier is simultaneously connected to an external DC-P terminal, an external DC-N terminal, an external AC1 terminal and an external AC2 terminal. The above-mentioned structure is arranged, and each unit module has a high degree of integration, shortens the routing distance of the drive loop, reduces the routing length and the complexity of the signal transmission path, thereby reducing interference and distortion in the signal transmission process, helping to maintain the integrity of the signal, reducing loop parasitic parameters, reducing resonance caused by high-frequency switching, reducing electromagnetic interference (EMI), making the drive signal more stable and accurately transmitted to the intelligent power module, and improving the control accuracy and reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A circuit structure diagram of an integrated drive circuit for shortening the drive loop wiring of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the intelligent power module in the present invention;

[0023] Figure 3 It is a schematic diagram of the circuit structure of the driving circuit in the present invention. DETAILED DESCRIPTION

[0024] The present invention provides an integrated drive circuit and an intelligent power module with shortened drive circuit routing, aiming to solve the problems that the drive circuit of the existing intelligent power module is routed from the peripheral circuit of the module body, which increases the routing length and the complexity of the signal transmission path, resulting in interference and distortion in the signal transmission process.

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Please refer to the attached Figure 1-2 As shown, the present invention provides an integrated driving circuit 02 for shortening the driving loop wiring, which includes:

[0027] A control chip 207, which includes a VSS terminal, a VB1 terminal, a UVS1 terminal, a VB2 terminal, a UVS2 terminal, a VB3 terminal, a UVS3 terminal, a FPCOUT terminal, a H01 terminal, a H02 terminal, and a H03 terminal;

[0028] The PFC control unit 03 includes a first drive circuit 206 and a diode D1. The first drive circuit 206 is connected to the positive terminal, the external PFC terminal and the external -VCC terminal of the diode D1. The negative terminal of the diode D1 is connected to the external high voltage input terminal VCC.

[0029] Inverter control unit 04: it includes a drive circuit 041, an upper arm bridge drive circuit 042 and a lower arm bridge drive circuit 043 connected to the upper arm bridge drive circuit 042, wherein one end of the upper arm bridge drive circuit 042 away from the lower arm bridge drive circuit 043 is connected to the external high voltage input terminal VCC, the negative terminal of the diode D1 and the control chip 207, and one end of the lower arm bridge drive circuit 043 away from the upper arm bridge drive circuit 042 is connected to the external -UVW terminal and the control chip 207 at the same time, wherein the lower arm bridge drive circuit 043 is connected to the VSS terminal of the control chip 207 through the drive circuit 041;

[0030] The bootstrap unit 05 includes a first capacitor component 051, a second capacitor component 052 and a third capacitor component 053. The first capacitor component 051 is connected to the VB1 end of the control chip 207, the UVS1 end of the control chip 207, the external bootstrap guide pin UVS1 end, the external bootstrap guide pin VB1 end, the upper arm bridge driving circuit 042 and the lower arm bridge driving circuit 043. The second capacitor component 052 is connected to the VB2 end of the control chip 207, The UVS2 end of the control chip 207, the external bootstrap guide pin UVS2 end, the external bootstrap guide pin VB2 end, the upper arm bridge drive circuit 042 and the lower arm bridge drive circuit 043 are connected, and the third capacitor component 053 is simultaneously connected to the VB3 end of the control chip 207, the UVS3 end of the control chip 207, the external bootstrap guide pin UVS3 end, the external bootstrap guide pin VB3 end, the upper arm bridge drive circuit 042 and the lower arm bridge drive circuit 043;

[0031] Rectifier 208: It is connected to the external DC-P terminal, the external DC-N terminal, the external AC1 terminal and the external AC2 terminal at the same time.

[0032] In this embodiment, the first driving circuit 206 includes a transistor G7, a diode D2 and a driving resistor Q7-R, the drain of the transistor G7 is simultaneously connected to the positive terminal of the diode D1, the negative terminal of the diode D2 and the external PFC terminal, the gate of the transistor G7 is connected to the first end of the driving resistor Q7-R, the source of the transistor G7 is simultaneously connected to the external -VCC terminal and the positive terminal of the diode D2, and the second end of the driving resistor Q7-R is connected to the FPCOUT terminal of the control chip 207.

[0033] Specifically, the upper arm bridge drive circuit 042 includes a first IGBT tube drive circuit 200, a second IGBT tube drive circuit 201 and a third IGBT tube drive circuit 202, the first IGBT tube drive circuit 200 includes a transistor G1, a drive resistor Q1-R and a diode D3, the second IGBT tube drive circuit 201 includes a transistor G2, a drive resistor Q2-R and a diode D4, the third IGBT tube drive circuit 202 includes a transistor G3, a drive resistor Q3-R and a diode D5, the lower arm bridge drive circuit includes a fourth IGBT tube drive circuit 203, a fifth IGBT tube drive circuit 204 and a sixth IGBT tube drive circuit 205, the fourth IGBT tube drive circuit 203 includes a transistor G4, a drive resistor Q4-R and a diode D6, the fifth IGBT tube drive circuit 204 includes a transistor G5, a drive resistor Q5-R and a diode D7, and the sixth IGBT tube drive circuit 205 includes a transistor G6, a drive resistor Q6-R and a diode D8;The drain of the transistor G1 is simultaneously connected to the cathode end of the diode D3, the cathode end of the diode D4, the cathode end of the diode D5, the cathode end of the diode D1, the drain of the transistor G2, the drain of the transistor G3 and the external high voltage input terminal VCC, the gate of the transistor G1 is connected to the first end of the driving resistor Q1-R, the second end of the driving resistor Q1-R is connected to the H01 terminal of the control chip 207, and the source of the transistor G1 is simultaneously connected to the positive terminal of the diode D3. The gate of the transistor G2 is connected to the first end of the driving resistor Q2-R, the second end of the driving resistor Q2-R is connected to the H02 end of the control chip 207, the source of the transistor G2 is simultaneously connected to the positive end of the diode D4, the drain of the transistor G5 and the negative end of the diode D7, the gate of the transistor G3 is connected to the first end of the driving resistor Q3-R, the second end of the driving resistor Q3-R is connected to the The control chip 207 is connected to the H03 terminal, the source of the transistor G3 is connected to the positive terminal of the diode D5, the drain of the transistor G6 and the negative terminal of the diode D8, the gate of the transistor G4 is connected to the first end of the driving resistor Q4-R, the second end of the driving resistor Q4-R is connected to the L01 terminal of the control chip 207, the source of the transistor G4 is connected to the positive terminal of the diode D6, the positive terminal of the diode D7, the positive ...2 terminal of the control chip 207, the source of the transistor G4 is connected to the positive terminal of the diode D6, the positive terminal of the diode D7, the positive terminal of the diode D8, the gate of the transistor G4 is connected to the first end of the driving resistor Q4-R, the second end of the driving resistor Q4-R is connected to the L03 terminal of the control chip 207, the source of the transistor G4 is connected to the positive terminal of the diode D6, the positive terminal of the diode D7, the positive terminal of the diode D8, the gate of the transistor G4 is connected to the first end of the driving resistor Q4-R, the second end of the driving resistor Q4-R is connected to the L01 terminal of the control chip 207 The source of the transistor G5, the source of the transistor G6 and the external -UVW terminal are connected and then connected to the VSS terminal of the control chip 207 through the driving circuit, the gate of the transistor G5 is connected to the first end of the driving resistor Q5-R, the second end of the driving resistor Q5-R is connected to the L02 terminal of the control chip 207, the gate of the transistor G6 is connected to the first end of the driving resistor Q6-R, and the second end of the driving resistor Q6-R is connected to the L03 terminal of the control chip 207. ;

[0034] Further, the first capacitor component 051 includes a capacitor C209 and a capacitor C212, the first end of the capacitor C209 is simultaneously connected to the first end of the capacitor C212, the UVS1 end of the control chip 207, the external bootstrap guide pin UVS1 end, the external bootstrap guide pin VB1 end, the source of the transistor G1 and the drain of the transistor G4, the second end of the capacitor C209 is simultaneously connected to the second end of the capacitor C212 and the VB1 end of the control chip 207; the second capacitor component 052 includes a capacitor C210 and a capacitor C213, the first end of the capacitor C210 is simultaneously connected to the first end of the capacitor C213, the UVS2 end of the control chip 207, the external bootstrap guide pin UV The first terminal of the capacitor C210 is connected to the second end of the capacitor C213 and the VB2 terminal of the control chip 207; the third capacitor component 053 includes a capacitor C211 and a capacitor C214, the first end of the capacitor C211 is connected to the first end of the capacitor C214, the UVS3 terminal of the control chip 207, the external bootstrap guide pin UVS3 terminal, the external bootstrap guide pin VB3 terminal, the source of the transistor G3 and the drain of the transistor G6, and the second end of the capacitor C211 is connected to the second end of the capacitor C214 and the VB3 terminal of the control chip 207.

[0035] In this embodiment, the rectifier 208 includes a diode D9, a diode D10, a diode D11 and a diode D12, the negative terminal of the diode D9 is connected to the negative terminal of the diode D10 and the external DC-P terminal at the same time, the positive terminal of the diode D9 is connected to the positive terminal of the diode D10, the negative terminal of the diode D11, the negative terminal of the diode D12, the external AC1 terminal and the external AC2 terminal at the same time, and the positive terminal of the diode D11 is connected to the positive terminal of the diode D12 and the external DC-N terminal at the same time.

[0036] It is worth mentioning that the driving circuit 041 includes a driving resistor R1, a parasitic inductor L1, an IGBT power tube Q1, a parasitic inductor L2, and a parasitic inductor L3. The first end of the IGBT power tube Q1 is connected to the positive terminal of the diode D6, the positive terminal of the diode D7, the positive terminal of the diode D8, the source of the transistor G4, the source of the transistor G5, the source of the transistor G6, and the external -UVW terminal. The second end of the IGBT power tube Q1 is connected to the first end of the parasitic inductor L1, the second end of the parasitic inductor L1 is connected to the first end of the driving resistor R1, the third end of the IGBT power tube Q1 is connected to the first end of the parasitic inductor L2, the second end of the parasitic inductor L2 is connected to the first end of the parasitic inductor L3, and the second end of the driving resistor R1 and the second end of the parasitic inductor L3 are simultaneously connected to the VSS terminal of the control chip 207.

[0037] Please see attached Figure 3 As shown, the present invention also provides an intelligent power module, including a metal substrate plate 409, a module plastic package body 410, the integrated drive circuit 02 for shortening the drive loop routing, a bootstrap circuit 407 connected to the integrated drive circuit 02 for shortening the drive loop routing and having a VB1&U port, a VB2&V port and a VB3&W port, a filter capacitor C401, a bootstrap capacitor C402, a filter capacitor C403, a bootstrap capacitor C404, a filter capacitor C405, a bootstrap capacitor C406, a load motor 408 and a lead terminal 411, the module plastic package body 410, the integrated drive circuit 02 for shortening the drive loop routing and the bootstrap circuit 407 are arranged on the metal substrate plate 409, the bootstrap circuit 407 is connected to the corresponding functional routing through a binding jumper, and the VB1 of the bootstrap circuit 407 The VB2&U port is connected to the filter capacitor C405, the bootstrap capacitor C406 and the U phase end of the load motor 408 in sequence, the VB2&V port of the bootstrap circuit 407 is connected to the filter capacitor C403, the bootstrap capacitor C404 and the V phase end of the load motor 408 in sequence, the VB3&W port of the bootstrap circuit 407 is connected to the filter capacitor C401, the bootstrap capacitor C402 and the W phase end of the load motor 408 in sequence, and the lead terminal includes an A terminal connected to the U phase end, the V phase end and the W phase end of the load motor 408, a B terminal connected to the VSS end and the -UVW end of the integrated drive circuit for shortening the drive loop routing, and a C terminal connected to the H01-H03 ends of the integrated drive circuit for shortening the drive loop routing.

[0038] The configuration of the above-mentioned intelligent power module greatly improves the integration of each unit in the module, shortens the routing distance of the drive circuit, reduces the parasitic parameters of the circuit, and reduces the resonance caused by high-frequency switching. The shorter routing can reduce the area of ​​the signal circuit, thereby reducing electromagnetic radiation and electromagnetic interference to the outside world. At the same time, it also helps to improve the intelligent power module's ability to resist its own internal electromagnetic interference, so that the intelligent power module can work more stably in a complex electromagnetic environment. By reducing the routing length of the drive circuit and the complexity of the signal transmission path, the interference and distortion in the signal transmission process are reduced, which helps to maintain the integrity of the signal, reduce electromagnetic interference (EMI), and enable the drive signal to be transmitted more stably and accurately, thereby improving the control accuracy and reliability of the intelligent power module.

[0039] In this embodiment, the package type of the filter capacitor C401, the filter capacitor C403 and the filter capacitor C405 is 0402 package type, and the capacitance of the filter capacitor C401, the filter capacitor C403 and the filter capacitor C405 is 1nf; the package type of the bootstrap capacitor C402, the bootstrap capacitor C404 and the bootstrap capacitor C406 is 1206 package type, and the capacitance of the bootstrap capacitor C402, the bootstrap capacitor C404 and the bootstrap capacitor C406 is 22nf. Of course, the type and capacitance of the filter capacitor C and the bootstrap capacitor C described in this structure are not limited to this, and they can be set according to actual conditions.

[0040] Compared with the related art, the present invention provides an integrated drive circuit and an intelligent power module for shortening the drive loop routing, wherein the integrated drive circuit for shortening the drive loop routing includes a control chip, a PFC control unit, an inverter control unit, a bootstrap unit and a rectifier; the PFC control unit includes a first drive circuit 206 and a diode D1; the inverter control unit includes a drive loop, an upper arm bridge drive circuit and a lower arm bridge drive circuit, and the lower arm bridge drive circuit is connected to the control chip through the drive loop; the bootstrap unit includes a first capacitor component, a second capacitor component and a third capacitor component; the rectifier is simultaneously connected to an external DC-P terminal, an external DC-N terminal, an external AC1 terminal and an external AC2 terminal. The above-mentioned structure is arranged, and each unit module has a high degree of integration, shortens the routing distance of the drive loop, reduces the routing length and the complexity of the signal transmission path, thereby reducing interference and distortion in the signal transmission process, helping to maintain the integrity of the signal, reducing loop parasitic parameters, reducing resonance caused by high-frequency switching, reducing electromagnetic interference (EMI), making the drive signal more stable and accurately transmitted to the intelligent power module, and improving the control accuracy and reliability of the system.

[0041] It should be noted that the above-described embodiments should be understood as illustrative rather than limiting the scope of protection of the present invention, and the scope of protection of the present invention shall be subject to the claims. For those skilled in the art, some non-essential improvements and adjustments made to the present invention still fall within the scope of protection of the present invention without departing from the essence and scope of the present invention.

Claims

1. An integrated drive circuit for shortening the drive loop wiring, characterized in that: The integrated driving circuit comprises: A control chip, comprising a VSS terminal, a VB1 terminal, a UVS1 terminal, a VB2 terminal, a UVS2 terminal, a VB3 terminal, a UVS3 terminal, an FPCOUT terminal, a H01 terminal, a H02 terminal and a H03 terminal; The PFC control unit comprises a first drive circuit (206) and a diode D1, wherein the first drive circuit (206) is connected to the positive terminal, the external PFC terminal and the external -VCC terminal of the diode D1, and the negative terminal of the diode D1 is connected to the external high voltage input terminal VCC; Inverter control unit: it includes a drive circuit, an upper arm bridge drive circuit and a lower arm bridge drive circuit connected to the upper arm bridge drive circuit, wherein one end of the upper arm bridge drive circuit away from the lower arm bridge drive circuit is connected to the external high voltage input terminal VCC, the negative terminal of the diode D1 and the control chip, and one end of the lower arm bridge drive circuit away from the upper arm bridge drive circuit is connected to the external -UVW terminal and the control chip at the same time, wherein the lower arm bridge drive circuit is connected to the VSS terminal of the control chip through the drive circuit; A bootstrap unit: comprising a first capacitor component, a second capacitor component and a third capacitor component, wherein the first capacitor component is simultaneously connected to the VB1 end of the control chip, the UVS1 end of the control chip, the external bootstrap guide pin UVS1 end, the external bootstrap guide pin VB1 end, the upper arm bridge drive circuit and the lower arm bridge drive circuit, the second capacitor component is simultaneously connected to the VB2 end of the control chip, the UVS2 end of the control chip, the external bootstrap guide pin UVS2 end, the external bootstrap guide pin VB2 end, the upper arm bridge drive circuit and the lower arm bridge drive circuit, and the third capacitor component is simultaneously connected to the VB3 end of the control chip, the UVS3 end of the control chip, the external bootstrap guide pin UVS3 end, the external bootstrap guide pin VB3 end, the upper arm bridge drive circuit and the lower arm bridge drive circuit; Rectifier: It is connected to the external DC-P terminal, the external DC-N terminal, the external AC1 terminal and the external AC2 terminal at the same time.

2. The integrated driving circuit for shortening the driving loop wiring according to claim 1, characterized in that: The first driving circuit (206) comprises a transistor G7, a diode D2 and a driving resistor Q7-R, the drain of the transistor G7 is simultaneously connected to the positive terminal of the diode D1, the negative terminal of the diode D2 and the external PFC terminal, the gate of the transistor G7 is connected to the first terminal of the driving resistor Q7-R, the source of the transistor G7 is simultaneously connected to the external -VCC terminal and the positive terminal of the diode D2, and the second terminal of the driving resistor Q7-R is connected to the FPCOUT terminal of the control chip.

3. The integrated driving circuit for shortening the driving loop wiring according to claim 2, characterized in that: The upper arm bridge drive circuit comprises a first IGBT tube drive circuit (200), a second IGBT tube drive circuit (201) and a third IGBT tube drive circuit (202); the first IGBT tube drive circuit (200) comprises a triode G1, a drive resistor Q1-R and a diode D3; the second IGBT tube drive circuit (201) comprises a triode G2, a drive resistor Q2-R and a diode D4; the third IGBT tube drive circuit (202) comprises a triode G3, a drive resistor Q3-R and a diode D5; The lower arm bridge drive circuit comprises a fourth IGBT tube drive circuit (203), a fifth IGBT tube drive circuit (204) and a sixth IGBT tube drive circuit (205); the fourth IGBT tube drive circuit (203) comprises a triode G4, a drive resistor Q4-R and a diode D6; the fifth IGBT tube drive circuit (204) comprises a triode G5, a drive resistor Q5-R and a diode D7; and the sixth IGBT tube drive circuit (205) comprises a triode G6, a drive resistor Q6-R and a diode D8; The drain of the transistor G1 is simultaneously connected to the cathode end of the diode D3, the cathode end of the diode D4, the cathode end of the diode D5, the cathode end of the diode D1, the drain of the transistor G2, the drain of the transistor G3 and the external high voltage input terminal VCC, the gate of the transistor G1 is connected to the first end of the driving resistor Q1-R, the second end of the driving resistor Q1-R is connected to the H01 terminal of the control chip, and the source of the transistor G1 is simultaneously connected to the diode D The positive terminal of the transistor G3, the drain of the transistor G4 and the negative terminal of the diode D6 are connected, the gate of the transistor G2 is connected to the first end of the driving resistor Q2-R, the second end of the driving resistor Q2-R is connected to the H02 terminal of the control chip, the source of the transistor G2 is simultaneously connected to the positive terminal of the diode D4, the drain of the transistor G5 and the negative terminal of the diode D7, the gate of the transistor G3 is connected to the first end of the driving resistor Q3-R, the gate of the driving resistor Q3-R is ... The second end is connected to the H03 end of the control chip, the source of the transistor G3 is simultaneously connected to the positive end of the diode D5, the drain of the transistor G6 and the negative end of the diode D8, the gate of the transistor G4 is connected to the first end of the driving resistor Q4-R, the second end of the driving resistor Q4-R is connected to the L01 end of the control chip, the source of the transistor G4 is simultaneously connected to the positive end of the diode D6, the positive end of the diode D7, the positive end of the diode D8, The source of the transistor G5, the source of the transistor G6 and the external -UVW end are connected to each other and then connected to the VSS end of the control chip through the drive circuit. The gate of the transistor G5 is connected to the first end of the drive resistor Q5-R, and the second end of the drive resistor Q5-R is connected to the L02 end of the control chip. The gate of the transistor G6 is connected to the first end of the drive resistor Q6-R, and the second end of the drive resistor Q6-R is connected to the L03 end of the control chip.

4. The integrated driving circuit for shortening the driving loop wiring according to claim 3, characterized in that: The first capacitor component includes a capacitor C209 and a capacitor C212, wherein a first end of the capacitor C209 is simultaneously connected to a first end of the capacitor C212, the UVS1 end of the control chip, the external bootstrap guide pin UVS1 end, the external bootstrap guide pin VB1 end, the source of the transistor G1 and the drain of the transistor G4, and a second end of the capacitor C209 is simultaneously connected to a second end of the capacitor C212 and the VB1 end of the control chip; the second capacitor component includes a capacitor C210 and a capacitor C213, wherein a first end of the capacitor C210 is simultaneously connected to a first end of the capacitor C213, the UVS2 end of the control chip, the external bootstrap guide pin UVS2 end, The external bootstrap guide pin VB2 end, the source of the transistor G2 and the drain of the transistor G5 are connected, and the second end of the capacitor C210 is simultaneously connected to the second end of the capacitor C213 and the VB2 end of the control chip; the third capacitor component includes a capacitor C211 and a capacitor C214, and the first end of the capacitor C211 is simultaneously connected to the first end of the capacitor C214, the UVS3 end of the control chip, the external bootstrap guide pin UVS3 end, the external bootstrap guide pin VB3 end, the source of the transistor G3 and the drain of the transistor G6, and the second end of the capacitor C211 is simultaneously connected to the second end of the capacitor C214 and the VB3 end of the control chip.

5. The integrated driving circuit for shortening the driving loop wiring according to claim 1, characterized in that: The rectifier includes a diode D9, a diode D10, a diode D11 and a diode D12, the negative terminal of the diode D9 is connected to the negative terminal of the diode D10 and the external DC-P terminal at the same time, the positive terminal of the diode D9 is connected to the positive terminal of the diode D10, the negative terminal of the diode D11, the negative terminal of the diode D12, the external AC1 terminal and the external AC2 terminal at the same time, and the positive terminal of the diode D11 is connected to the positive terminal of the diode D12 and the external DC-N terminal at the same time.

6. The integrated driving circuit for shortening the driving loop wiring according to claim 3, characterized in that: The driving circuit includes a driving resistor R1, a parasitic inductor L1, an IGBT power tube Q1, a parasitic inductor L2, and a parasitic inductor L3. The first end of the IGBT power tube Q1 is connected to the positive terminal of the diode D6, the positive terminal of the diode D7, the positive terminal of the diode D8, the source of the transistor G4, the source of the transistor G5, the source of the transistor G6, and the external -UVW terminal. The second end of the IGBT power tube Q1 is connected to the first end of the parasitic inductor L1, the second end of the parasitic inductor L1 is connected to the first end of the driving resistor R1, the third end of the IGBT power tube Q1 is connected to the first end of the parasitic inductor L2, the second end of the parasitic inductor L2 is connected to the first end of the parasitic inductor L3, and the second end of the driving resistor R1 and the second end of the parasitic inductor L3 are simultaneously connected to the VSS terminal of the control chip.

7. An intelligent power module, characterized in that: The intelligent power module comprises a metal substrate, a module plastic package body, an integrated drive circuit for shortening the drive loop routing as described in any one of claims 1 to 6, a bootstrap circuit (407) connected to the integrated drive circuit for shortening the drive loop routing and having a VB1&U port, a VB2&V port and a VB3&W port, a filter capacitor C401, a bootstrap capacitor C402, a filter capacitor C403, a bootstrap capacitor C404, a filter capacitor C405, a bootstrap capacitor C406, a load motor (408) and a lead terminal (410), wherein the module plastic package body, the integrated drive circuit for shortening the drive loop routing and the bootstrap circuit (407) are arranged on the metal substrate, and the VB1&U port of the bootstrap circuit (407) is connected to the filter capacitor C405, the bootstrap capacitor C406 and the load motor (408) in sequence. The bootstrap capacitor C406 and the U phase end of the load motor (408), the VB2&V port of the bootstrap circuit (407) is connected in sequence to the filter capacitor C403, the bootstrap capacitor C404 and the V phase end of the load motor (408), the VB3&W port of the bootstrap circuit (407) is connected in sequence to the filter capacitor C401, the bootstrap capacitor C402 and the W phase end of the load motor (408), and the lead terminal includes an A terminal connected to the U phase end, the V phase end and the W phase end of the load motor (408), a B terminal connected to the VSS end and the -UVW end of the integrated drive circuit for shortening the drive loop routing, and a C terminal connected to the H01-H03 end of the integrated drive circuit for shortening the drive loop routing.

8. The intelligent power module according to claim 7, characterized in that: The package type of the filter capacitor C401, the filter capacitor C403 and the filter capacitor C405 is 0402 package type, and the capacitance of the filter capacitor C401, the filter capacitor C403 and the filter capacitor C405 is 1nf; the package type of the bootstrap capacitor C402, the bootstrap capacitor C404 and the bootstrap capacitor C406 is 1206 package type, and the capacitance of the bootstrap capacitor C402, the bootstrap capacitor C404 and the bootstrap capacitor C406 is 22nf.

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