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Thread: dependency of short circuit capability with some factors

  1. #1
    New Member New Member AnniLe is on a distinguished road
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    dependency of short circuit capability with some factors

    Hello again, can you also tell me what the dependence of short-circuit capability with bus voltage, gate voltage and temperature is? Thanks in advance!

  2. #2

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    史威 is on a distinguished road
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    The short-circuit time should derating with the bus voltage, gate voltage and temperature increase ,

  3. #3

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    Hi AnniLe,

    some details on SC (e.g. example waveform) you can find in the following Application note:

    https://www.infineon.com/dgdl/Infine...61c27fbcda0aae

    SC withstand time will be significantly reduced for gate voltages above 15 V. Therefore for applications needed SC capability we are recommending to use 15 V gate voltage, whereas applications not needing SC capability
    Lower DC-link voltage will increase SC withstandtime approximately inverse proportional
    Lower junction temperature before SC will give a slight increase in SC withstand time.

    Best regards,
    electricuwe
    The views expressed here are my personal opinions, have not been reviewed or authorized by Infineon and do not necessarily represent the views of Infineon.

  4. #4
    New Member New Member AnniLe is on a distinguished road
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    Hello electricuwe,

    sorry for my late response but thanks for your explanation and the hint to the application note! I've an additional question... how can a short circuit protection be provided for a SiC module with short circuit capability of 3s?

    Thanks

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