A high voltage and high power igbt drive circuit

A driving circuit and high-power technology, applied in the field of power electronics, can solve the problems of pulse width limitation omission, damage to IGBT tubes, etc., and achieve the effects of low cost, small delay jitter, and high reliability

Active Publication Date: 2020-11-10
NANJING RAIL TRANSIT SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the related art, software method is used to limit the pulse width of the PWM control signal input to the IGBT tube, but there is a deficiency that the pulse width limit may be missed due to the program running away or crashing; There are many electronic components between the p

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  • A high voltage and high power igbt drive circuit
  • A high voltage and high power igbt drive circuit
  • A high voltage and high power igbt drive circuit

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[0034] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and the drawings, and the content mentioned in the embodiments does not limit the present invention.

[0035] Reference figure 1 As shown, a high-voltage and high-power IGBT drive circuit of the present invention includes: a drive power circuit module, a PWM signal transceiver module, a high-speed dual-channel comparator module, a drive current amplifier module, a feedback circuit detection module, and a clamp circuit module; drive The power circuit module provides the required power for each module; the PWM signal transceiver module and the high-speed dual-channel comparator module are connected to the drive current amplifier module, the signal generated by the drive current amplifier module drives the IGBT, and the feedback circuit detection module is connected to the drive current method module. For the detection ...

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Abstract

The invention discloses a high-voltage and high-power IGBT driving circuit. The high-voltage and high-power IGBT driving circuit comprises a driving power supply circuit module, a PWM signal transceiving module, a high-speed double-channel comparator module, a driving current amplification module, a feedback circuit detection module and a clamping circuit module; the driving power supply circuit module supplies required power supply to each module; the PWM signal transceiving module and the high-speed double-channel comparator module are in signal connection with the driving current amplification module; an IGBT is driven by signals generated by the driving current amplification module; and the feedback circuit detection module is connected to the high-speed double-channel comparator module, and used for over-current and short-circuit detection. By means of the driving circuit disclosed by the invention, the switching time can be shortened; the switching loss can be reduced; and thus,the IGBT works in a relatively ideal switching state.

Description

technical field [0001] The invention relates to the technical field of power electronics, and specifically refers to a high-voltage high-power IGBT drive circuit. Background technique [0002] At present, the application of IGBT driver technology in the field of small and medium power at home and abroad is relatively mature, mainly using analog control to realize the drive, and the function is relatively simple; IGBT combines the advantages of MOSFET and GTR, with high input impedance, fast switching speed, and good thermal stability. , On-state voltage drop, high withstand voltage, large current and other characteristics, in recent years, it has been widely used in various fields. Using a set of driving circuits with good performance can shorten the switching time, reduce switching losses, and make the IGBT work in an ideal switching state. At the same time, it is of great significance to the operating efficiency, reliability and safety of the product. The IGBT is a voltag...

Claims

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Application Information

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IPC IPC(8): H03K17/567
CPCH03K17/567H03K2217/0081
Inventor 陈鹏马剑陈治国王超佟妍田立岭花清源徐宏武胡世豪王栋
Owner NANJING RAIL TRANSIT SYST
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