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A short circuit must be cleared by an IGBT within about

  • A.one second
  • B.one minute
  • C.ten microseconds
  • D.ten milliseconds

Answer: C

The device's short-circuit withstand time is of that order, after which it fails, so protection has to act far faster than any fuse. That is why the gate drive itself carries the detection rather than leaving it to the controller.

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