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C3m0075120K

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lok
lok Contributor Level 1
edited March 2 in Discrete Products

how evaluate the Eon and Eoff in different voltage level, as the datasheet only provide the 400V and 800V Eon and Off chart

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  • Forum_Moderator
    Forum_Moderator Wolfspeed Employee - Contributor Level 5
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    Thank you for your post, it has been approved and we will respond as soon as possible.

  • BlakeNelson
    BlakeNelson Wolfspeed Employee - Contributor Level 3
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    Hi lok,

    Generally, it is assumed that the switching losses in a MOSFET scale linearly with the drain to source voltage. i.e. E(Vds=800) = E(Vds=600)*800/600.

    This approximation is very accurate for small changes in voltage (e.g. 800 to 850V), but you can also extrapolate the slope between the two voltage points in the datasheet (which is the approach used by PLECS).

    Let me know if you have any other questions!

    Thanks,
    Blake

    lok
  • lok
    lok Contributor Level 1
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    thank you very much!!

  • BlakeNelson
    BlakeNelson Wolfspeed Employee - Contributor Level 3
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    Great, I'm glad I was able to answer your question.

    I will close this discussion for now but if you have a follow up question, please "Start a New Discussion" and we would be glad to support you further.

    lok
This discussion has been closed.