Wolfspeed Power Applications Forum

Wolfspeed Technical Community:

SpeedFit™ Design Simulator

Simulate and evaluate the performance of SiC-based power circuits and determine the right SiC device in seconds.

Start a Simulation

Categories

Reverse Recovery Energy vs. Junction Temperature

Options
nugzari
nugzari Contributor Level 2
edited November 2024 in Module Products

I would like to know how I can measure reverse recovery losses from diodes.

I have tried the following, but I get completely different results from Err.

image.png

Can you tell me what I should do differently . Thanks in advance.

best Regards.
Nugzari

Tagged:

Comments

  • Forum_Moderator
    Forum_Moderator Wolfspeed Employee - Contributor Level 5
    Options

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

  • Bdeboi
    Bdeboi Wolfspeed Employee - Contributor Level 3
    Options

    Hello,

    The problem with your simulation is that you have placed the load inductor on the low side and are also switching the low side. There is never any current flowing through your load. Instead, you have two options:

    1. Place the load inductor from V+ to HIGH. Switch G2/K2 with G1/K1 held OFF. Measure I(R10) and V(Mid).
    2. Place the load inductor from Mid to GND. Switch G1/K1 with G2/K2 held OFF. Measure I(R9) and V(High,Mid)

    Let me know if this helps.

    Thanks,

    Brian

  • TBhatia
    TBhatia Wolfspeed Admin - Contributor Level 5
    Options

    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.