Igbt drive circuit

Igbt drive circuit

  • CN 205,901,576 U
  • Filed: 08/02/2016
  • Issued: 01/18/2017
  • Est. Priority Date: 08/02/2016
  • Status: Active Grant
First Claim
Patent Images

1. a kind of igbt drive circuit, including for driving what igbt (5) ran to order about circuit, is characterized in that:

  • also include;

    Short-circuit detecting circuit (2), is coupled to igbt (5) to detect the collector voltage size variation of igbt (5) and to export detectionSignal (v5);

    Filter circuit (4), for filtering the interference waveform in detection signal (v5);

    Decision circuitry, described decision circuitry is coupled to short-circuit detecting circuit (2) to receive detection signal (v5) and to judge igbt (5)Whether collector voltage drastically raises with output short-circuit signal (v4).

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