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An intelligent power module drive protection circuit

A technology for driving protection circuits and intelligent power modules, applied in the servo field, can solve problems such as signal lag, untimely alarm, and large space volume, and achieve the effects of low-latency detection, perfect functions, and reasonable space volume

Active Publication Date: 2019-12-20
BEIJING SATELLITE MFG FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although IPM can directly realize the drive and alarm output, there are limitations and transmission delays in the space volume, drive power, and alarm output voltage settings, which will lead to untimely corresponding alarms, delayed signal processing, and large space volumes.

Method used

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  • An intelligent power module drive protection circuit
  • An intelligent power module drive protection circuit

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Such as figure 1 , The intelligent power module drive protection circuit includes: an input and output interface, a chip, a signal input detection sub-circuit, a filter sub-circuit, a drive sub-circuit, a protection sub-circuit and a fault output sub-circuit. Wherein, the signal input detection sub-circuit, filter sub-circuit, drive sub-circuit, protection sub-circuit and fault output sub-circuit are respectively connected to the chip through corresponding pins provided on the chip. The input and output interface is used to connect with the external controller to realize the signal transmission between the external controller and the intelligent power module drive protection circuit; the chip is used to detect the input signal and amplify the power, output the drive signal, and carry out the fault signal Output; the signal input detection sub-circuit is used to receive the control signal input by the external controller, preprocess the control signal to obtain the input...

Embodiment 2

[0033] Such as figure 2 , in this embodiment, the pins provided on the chip at least include: overcurrent detection pin 1, input detection pin 4, drive signal output pin 5, power supply pin 6, fault output pin 7 and fault detection tube foot 8.

[0034] Preferably, the signal input detection sub-circuit may specifically include: a first resistor R1. Wherein, one end of the first resistor R1 is connected to the input and output interface, and the other end is connected to the input detection pin 4 on the chip to form a signal input detection sub-circuit to realize signal pull-up and have anti-interference ability.

[0035] Preferably, the filtering sub-circuit may specifically include: a first capacitor C1 and a second capacitor C2. Wherein, the first capacitor C1 and the second capacitor C2 are connected in parallel to the power supply pin and the overcurrent detection pin on the chip.

[0036] Preferably, the driving sub-circuit includes: a third resistor R3 and a sixth r...

Embodiment 3

[0044] The driving and protection circuit of the intelligent power module can be mainly composed of the driving chip U and its peripheral capacitors, resistors, diodes, voltage regulator tubes and other components, specifically including: the first resistor R1, the second resistor R2, and the third resistor R3 (drive resistor) , the fourth resistor R4 (current limiting resistor), the fifth resistor R5, the sixth resistor R6, the seventh resistor R7, the eighth resistor R8, the ninth resistor R9, the tenth resistor R10, the first capacitor C1, the second capacitor C2 , the third capacitor C3, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the first regulator tube D1, the second diode D2 (high voltage protection diode), the third diode D3, the fourth two Pole tube D4 and fifth voltage regulator tube D5 (providing the back pressure when the IGBT is turned off). Among them, the PWM signal input pin of the external controller and the fault signal port Fo a...

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Abstract

The invention discloses a driving protection circuit for an intelligent power module. The driving protection circuit comprises an input / output interface, a chip, a signal input detection sub-circuit,a filtering sub-circuit, a driving sub-circuit, a protection sub-circuit, and a fault output sub-circuit; the input / output interface is used for connecting an external controller, realizing signal transmission between the external controller and the driving protection circuit of the intelligent power module; the chip is used for performing detection and power amplification on input signals, outputting driving signals, and performing fault signal output; the signal input detection sub-circuit is used for pre-processing control signals and realizing the input of the input signals to the chip; the filtering sub-circuit is used for performing filtering processing on an input power source; the driving sub-circuit is used for adjusting the power output of the chip and driving an IGBT; the protection sub-circuit is used for adjusting thresholds of the short-circuit protection and over-current protection of the IBGT; and the fault output sub-circuit is used for the external controller to detect output signals so as to realize fault processing. With the driving protection circuit for the intelligent power module of the invention adopted, the shortcomings of the structure and performance ofan existing IPM driving circuit can be eliminated, and the timely and effective transmission of signals can be realized.

Description

technical field [0001] The invention belongs to the field of servo technology, in particular to an intelligent power module drive protection circuit. Background technique [0002] IPM (Intelligent Power Module intelligent power module drive protection circuit) integrates the high-voltage drive circuit and power switching devices together, and has fault detection functions such as undervoltage protection and overcurrent detection. On the one hand, the intelligent power module receives the control signal of the MCU and drives The follow-up circuit works, and on the other hand, the status detection signal of the system is sent back to the MCU. Compared with traditional discrete solutions, IPM has the advantages of high integration and high reliability, and because of its fast switching speed, low loss, low power consumption, multiple protection functions, strong anti-interference ability, and no need to take anti-static measures , Small size and other characteristics make it m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/20H02H3/08
CPCH02H3/08H02H7/205
Inventor 陈庆陈滔张彬彬张俊王蓓蓓李海波胡文婷曹辰磊李燕飞景明詹晓燕尤祥安张辰华
Owner BEIJING SATELLITE MFG FACTORY
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