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Estimation of switching losses

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Carson
Carson Contributor Level 1
edited June 2024 in General

Hi sirs,

We would like to calculate the switching losses, could wolfspeed provide a formula for calculating switching losses?

For now we use Switching off loss = Vin/Vin(ref) * Ids/Ids(ref)*Eoff * fsw.

is there any other recommendation?

Carson

rolfhorn66
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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.

  • Urvi_Ahluwalia
    Urvi_Ahluwalia Wolfspeed Employee - Contributor Level 2
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    Hi Carson,

    To evaluate Wolfspeed devices accurately in your topology for the switching losses, I would recommend using the SpeedFit tool which scales the switching loss based on the operating voltage and current. SpeedFit is a quick tool and can provide accurate device performance data within a few minutes.

    You can also try using our PLECS device models for the same purpose.

    Regards,

    Urvi

  • TBhatia
    TBhatia Wolfspeed Admin - Contributor Level 5
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    Hi, I hope that this answered 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.

This discussion has been closed.