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UCC28C43: How to Optimize High-Frequency Ringing and MOSFET Temperature in NexFET Push-Pull?

VBsemi MOSFET
Prodigy 150 points
Part Number: UCC28C43
Other Parts Discussed in Thread: CSD19502Q5B, UCC27714,

Tool/software:

In a UCC28C43 + UCC27714 + CSD19502Q5B NexFET push-pull 100W isolated DC-DC:
Severe high-frequency ringing causes EMI test failures.
MOSFET temperature exceeds 85°C at 80W load.

Questions:
White check mark How to simultaneously reduce ringing and MOSFET temperature?
White check mark For push-pull designs, are active clamp circuits or other proven methods available?
Appreciate your help!

  • 0
    TI__Guru 73215 points

    Hi,

    Again, please do not create duplicated thread - just one thread is needed. You created many threads trying to ask one thing how to resolve the spikes. You need to combine these into one thread.