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IGBT switching energy

Discussion in 'Electronic Design' started by Roby, Jun 16, 2007.

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  1. Roby

    Roby Guest

    I'm trying to evaluate switching losses for an igbt with a 10uH load...

    The datasheet give me the Eon / Eoff with an inductive load of 100uH..

    I need to consider the different load? how?

  2. Winfield

    Winfield Guest

    What datasheet?
  3. Roby

    Roby Guest

  4. legg

    legg Guest

    The test circuit inductance is chosen to allow testing at a reasonably
    low duty cycle without a lot of ripple in the current of the DUT.

    It has no effect on switching losses if turn-on and turn-off currents
    are duplicated, at the voltage specified, in each instance.

    In real life, lower inductance suggests higher peak current at
    turn-off, for the same average collector current - aggravating losses
    occuring in the current tail portion of the waveform. Adjust your loss
    calculations accordingly.

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