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An igbt drive gate rising and falling edge voltage adjustable control circuit

A technology for controlling circuits and driving gates, applied in electrical components, electronic switches, pulse technology, etc., can solve problems such as the inability to achieve adjustable gate drive voltage, and achieve the effects of low loss, good anti-interference performance, and fast input.

Active Publication Date: 2018-01-23
STATE GRID CORP OF CHINA +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an IGBT driving gate rising and falling edge voltage adjustable control circuit to solve the problem that the existing IGBT driving circuit cannot realize the adjustable gate driving voltage

Method used

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  • An igbt drive gate rising and falling edge voltage adjustable control circuit
  • An igbt drive gate rising and falling edge voltage adjustable control circuit
  • An igbt drive gate rising and falling edge voltage adjustable control circuit

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Embodiment Construction

[0022] The present invention will be further introduced below in conjunction with the accompanying drawings and specific embodiments. like figure 1 Shown is the schematic structural diagram of the IGBT drive gate rising and falling edge voltage adjustable control circuit of the present invention. It can be seen from the figure that the circuit includes a set of positive voltage drive regulation circuits connected in parallel at the output terminals and a set of negative voltage drive circuits connected in parallel at the output terminals. Drive adjustment circuits, each positive voltage drive adjustment circuit is used to output the connected positive level corresponding to different values, each negative voltage drive adjustment circuit is used to output the connected negative level corresponding to different values, and the input of each drive adjustment circuit The terminal is connected with the corresponding digital input signal terminal, and the output terminal of each dr...

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Abstract

The invention discloses an IGBT drive gate rising and falling edge voltage adjustable control circuit, comprising a group of positive voltage drive regulation circuits connected in parallel with output terminals and a group of negative voltage drive regulation circuits connected in parallel with output terminals, each positive voltage drive regulation circuit The circuit is used to output the connected positive levels corresponding to different values, each negative voltage drive adjustment circuit is used to output the connected negative levels corresponding to different values, and the input terminals of each drive adjustment circuit are connected to the corresponding digital input signal terminals , the output terminals of each drive regulation circuit are used to connect with the IGBT gate. Each drive regulation circuit in the control circuit of the present invention can output different voltages as required to realize the adjustment of the drive voltage, and change the traditional analog control into digital control, which has good anti-interference performance and can expand the required level as required number.

Description

technical field [0001] The invention relates to an IGBT driving gate rising and falling edge voltage adjustable control circuit. Background technique [0002] With the increasing application of high-power IGBTs, IGBT gate rising edge and falling edge control technology has been paid more and more attention, that is, an adjustable driving voltage waveform is applied to the IGBT gate to control the IGBT turn-on and turn-off process to achieve required turn-on and turn-off requirements. [0003] Because the turn-on and turn-off speed of IGBT is extremely fast, its effective switching time is generally within 1us, and the peak value of its turn-on and turn-off current is as high as several amperes. Therefore, the driving voltage waveform needs to complete the switching of multiple levels within a time of 1us, that is, the time from triggering to input of each level needs to be within 100ns, and the current of each stage needs to reach several amperes. The traditional solution ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K17/567H03K17/04
Inventor 安昱牛化鹏梅桂芳辛德峰谢剑
Owner STATE GRID CORP OF CHINA
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