CN208316559U

CN208316559U - IGBT power module driver

Info

Publication number: CN208316559U
Application number: CN201820602364.0U
Authority: CN
Inventors: 康凯; 方健; 顾卫钢
Original assignee: Nanjing Lingsu Technology Co Ltd
Current assignee: Nanjing Lingsu Technology Co Ltd
Priority date: 2018-04-26
Filing date: 2018-04-26
Publication date: 2019-01-01
Anticipated expiration: 2028-04-26

Abstract

The utility model discloses a kind of IGBT power module drivers, including drive module shell and whole drive circuit board, drive module is respectively arranged on the whole drive circuit board, protective module, IGBT power module and electrical isolation module, the drive module is powered by a power supply circuit and input processing circuit composition, and the two is electrically connected, the protective module is by protection circuit, thresholding adjusts circuit and control feedback circuit composition, and three is successively electrically connected, the thresholding adjusts electric routing switch S, external parallel resistance Rce, capacitor Cce and voltmeter are constituted, the external parallel resistance Rce, capacitor Cce and manometer, three is arranged in parallel, and the switch S connects with voltmeter.The problem of its technical effect is that adjust circuit by the way that thresholding is arranged in the driver, effectively avoiding IGBT, to open initial stage collector voltage higher, causes protection circuit erroneous action, also extends the service life of the IGBT power module driver to a certain extent.

Description

IGBT power module driver

Technical field

The utility model relates to a kind of drivers, and in particular to a kind of IGBT power module driver.

Background technique

Since IGBT has the characteristics that high switching frequency, conducting small power consumption and gate pole are easy to control, in high-power transformation series It is widely used in system.In IGBT application, in addition to the technical level of itself, an important factor for another will consider Be the design of its driver whether rationally and reliably.IGBT driver as the interface circuit between power circuit and controller, Power consumption and reliability to system etc. have great association, and the driver of an optimization is not in power conversion system It can or lack.

General in IGBT power module driver to be all equipped with circuit protection module, the IGBT currently generallyd use is short Road or overcurrent protection mode are realized by the voltage value for detecting the vce of diode, when short circuit or overcurrent occurs in IGBT When, workspace will move out saturation region and increase vce voltage, is connected by diode d with the collector of IGBT to realize The undersaturation of IGBT detects, and the raising of vce voltage increases the anode potential of series diode, when short more than setting Circuit operation is protected when the thresholding of road, turns off IGBT.Since IGBT is relatively high in the collector voltage at the initial stage of opening, if protected at this time Protection circuit work may cause malfunction, influence the service performance of entire driver.

In view of this, special propose the utility model.

Utility model content

The purpose of this utility model is to provide a kind of structure setting is reasonable, service performance more preferably New IGBT power Module driver.

To achieve the above object, the utility model provides the following technical solutions: a kind of IGBT power module driver, including Drive module shell and the whole drive circuit board being mounted in the drive module shell divide on the whole drive circuit board Be not provided with drive module, protective module, IGBT power module and electrical isolation module, the drive module, protective module and Electrical isolation module is electrically connected with IGBT power module respectively, and the drive module is powered by a power supply circuit and input processing electricity Road composition, and the two is electrically connected, the protective module adjusts circuit by protection circuit, thresholding and control feedback circuit forms, And three is successively electrically connected, the thresholding adjusts electric routing switch S, external parallel resistance Rce, capacitor Cce and voltmeter structure At the external parallel resistance Rce, capacitor Cce and voltmeter, three are arranged in parallel, and the switch S connects with voltmeter.

Further, the protective module includes overvoltage crowbar, under-voltage protecting circuit, short-circuit protection circuit and driving Circuit is protected, and four are electrically connected with IGBT power module respectively.

Further, the control feedback circuit also respectively with short-circuit protection circuit, Drive Protecting Circuit and overvoltage protection Circuit is electrically connected.

Further, the electrical isolation module is electrical isolation circuit, and the electrical isolation circuit and driving are protected Circuit is electrically connected.

Further, the voltage of the under-voltage protecting circuit control output are as follows: 12.5V~17.5V, -10.5V~- 15.5V。

Through said structure design, which adjusts the specific function mode of circuit are as follows: passes through Switch S and external parallel resistance Rce and capacitor Cce designs the protection circuit of the power module, when IGBT power module is closed When disconnected, switch S is open-minded, and capacitor Cce is charged to 15v, and when IGBT power module is opened, switch S shutdown, capacitor Cce is through outer Parallel resistance Rce electric discharge is connect, can thus to open initial stage in IGBT power module, reference voltage is higher than detection voltage, Prevent protection circuit erroneous action.

Compared with prior art, the utility model has the following beneficial effects: the IGBT power module driver service performance more It is good, circuit is adjusted by the way that thresholding is arranged in the driver, effectively avoiding IGBT, to open initial stage collector voltage higher, makes The problem of at protection circuit erroneous action, the service life of the IGBT power module driver is also extended to a certain extent.

Detailed description of the invention

Fig. 1 is modular event driven device schematic diagram in embodiment 1；

Fig. 2 is drive module schematic diagram in embodiment 1；

Fig. 3 is the relation schematic diagram of protective module and electrical isolation circuit and control feedback circuit in embodiment 1；

Fig. 4 is the schematic diagram that circuit and IGBT power module are protected in embodiment 1；

Fig. 5 is short-circuit protection circuit schematic diagram in embodiment 1.

In figure: drive module shell 1, whole drive circuit board 2, drive module 3, protective module 4, IGBT power module 5, electrical isolation module 6, power driving circuit 7, input processing circuit 8, thresholding adjust circuit 9, control feedback circuit 10, switch S11, external parallel resistance Rce12, capacitor Cce13, voltmeter 14, overvoltage crowbar 15, under-voltage protecting circuit 16, short circuit are protected Protection circuit 17, Drive Protecting Circuit 18, electrical isolation circuit 19, protection circuit 20.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Embodiment 1:

Fig. 1-5 is please referred to, the utility model provides a kind of IGBT power module driver, including drive module shell 1 With the whole drive circuit board 2 being mounted in the drive module shell 1, it is respectively arranged on the whole drive circuit board 2 Drive module 3, protective module 4, IGBT power module 5 and electrical isolation module 6, the drive module 3, protective module 4 and electricity Gas isolation module 6 is electrically connected with IGBT power module 5 respectively, and the drive module 3 is powered by a power supply circuit 7 and input It manages circuit 8 to form, and the two is electrically connected, the protective module 4 adjusts circuit 9 and control feedback by protection circuit 20, thresholding Circuit 10 forms, and three is successively electrically connected, and the thresholding adjusts circuit 9 by switch S11, external parallel resistance Rce12, electricity Holding Cce13 and voltmeter 14 is constituted, the external parallel resistance Rce12, capacitor Cce13 and voltmeter 14, three is arranged in parallel, And the switch S11 connects with voltmeter 14.

In the present embodiment, the protective module 4 includes overvoltage crowbar 15, under-voltage protecting circuit 16, short-circuit protection electricity Road 17 and Drive Protecting Circuit 18, and four are electrically connected with IGBT power module 5 respectively.

In the present embodiment, the control feedback circuit 10 also respectively with short-circuit protection circuit 17, Drive Protecting Circuit 18 and Overvoltage crowbar 15 is electrically connected.

In the present embodiment, the electrical isolation module 6 be electrical isolation circuit 19, and the electrical isolation circuit 19 and drive Dynamic protection circuit 18 is electrically connected.

In the present embodiment, the voltage of the control of under-voltage protecting circuit 16 output are as follows: 12.5V~17.5V, -10.5V~- 15.5V。

Through said structure design, which adjusts the specific function mode of circuit are as follows: passes through Switch S11 and external parallel resistance Rce12 and capacitor Cce13 designs the protection circuit of the power module, when IGBT power When module 5 turns off, switch S11 is open-minded, and capacitor Cce13 is charged to 15v, and when IGBT power module 5 is opened, switch S11 is closed Disconnected, capacitor Cce13 discharges through external parallel resistance Rce12, can thus to open initial stage in IGBT power module 5, joins It examines voltage and is higher than detection voltage, prevent protection circuit 4 from malfunctioning.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims

1. a kind of IGBT power module driver including drive module shell (1) and is mounted in the drive module shell (1) Whole drive circuit board (2), it is characterised in that: be respectively arranged on the whole drive circuit board (2) drive module (3), Protective module (4), IGBT power module (5) and electrical isolation module (6), the drive module (3), protective module (4) and electricity Gas isolation module (6) respectively with IGBT power module (5) be electrically connected, the drive module (3) be powered by a power supply circuit (7) and Input processing circuit (8) composition, and the two is electrically connected, the protective module (4) adjusts circuit by protection circuit (20), thresholding (9) with control feedback circuit (10) composition, and three is successively electrically connected, and the thresholding adjusts circuit (9) by switch S (11), External parallel resistance Rce (12), capacitor Cce (13) and voltmeter (14) are constituted, the external parallel resistance Rce, capacitor Cce and Voltmeter (14), three is arranged in parallel, and the switch S (11) connects with voltmeter (14).

2. IGBT power module driver according to claim 1, it is characterised in that: the protective module (4) included Voltage protection circuit (15), under-voltage protecting circuit (16), short-circuit protection circuit (17) and Drive Protecting Circuit (18), and four difference It is electrically connected with IGBT power module (5).

3. IGBT power module driver according to claim 1, it is characterised in that: the control feedback circuit (10) is also It is electrically connected respectively with short-circuit protection circuit (17), Drive Protecting Circuit (18) and overvoltage crowbar (15).

4. IGBT power module driver according to claim 1, it is characterised in that: the electrical isolation module (6) is Electrical isolation circuit (19), and the electrical isolation circuit (19) and Drive Protecting Circuit (18) are electrically connected.

5. IGBT power module driver according to claim 2, it is characterised in that: under-voltage protecting circuit (16) control Make the voltage of output are as follows: 12.5V~17.5V, -10.5V~-15.5V.