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Missing Err Loss data in diode

Joy
Joy Contributor Level 1
edited September 2023 in Discrete Products

Hi,

I am simulink an inverter model with your SiC MOSFET Plecs Model (C3M0021120K), unfortually it seems there is no exact switching off Err data in your diode Plecs Model, regarding MOSFET Bodydiode or just the Schoktty diode(C4D20120A). All of them don't exist switching off data. But for the diode, Err is an essential characteristic of the circuit design.

Do you have any other diode Plecs Model containing Err, or can you please give m a formula to calculate Err of MOSFET Bodydiode(C3M0021120K)? It seems practical to provide a direct mathematical formula to calculate Err.

image.png
image.png


Thanks a lot for your help!

Best regards

Joy

Comments

  • Forum_Moderator
    Forum_Moderator Wolfspeed Employee - Contributor Level 4

    Thank you for your post, it has been approved and we will respond as soon as possible.

  • ZMiller
    ZMiller Wolfspeed Employee - Contributor Level 3

    Hi Joy,

    We're currently aware of this limitation in our existing model portfolio and are presently working on a method to extend our models to more effectively capture this behavior. In the meantime, you could take a rough estimate of 10-15% of Eon for the reverse recovery. You'll have to input these values as switching energy at a negative current during the turn-off loss (shown below):

    image.png

    Let me know if you have any more questions!

    Thanks,

    Zack

  • TBhatia
    TBhatia Wolfspeed Admin - Contributor Level 5

    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.