Analysis IGBT gate Surge voltage characterization by stray inductance

기생 인덕턴스에 의한 게이트 서지 전압 특성분석

  • 이건호 (인피니언테크놀로지스코리아 (주))
  • Published : 2014.07.01

Abstract

Recently, the unipolar gate power source is preferred in inverter system because of cost reduction reason. In this case, designer uses 0V source for turning-off the switching devices instead of negative voltage at Vee source. If the gate driver circuit has some stray inductance, the gate voltage would happen a surge voltage. This paper analyzes that of stray inductance effect during the switching behavior in the circuit and the proposed solutions were verified by pulse test.

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