What is the reason for applying reverse-bias voltage (-VGE) between the gate and emitter?

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An insufficient reverse-bias voltage (-VGE) between the gate and emitter may cause the IGBT to mis-fire, leading to a short-circuit current. If the current is cut off the surge voltage and the generated loss may damage the product. For details, refer to Application Manual Chapters 4-3.3 and 7-1.2.

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