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UCC28019A: Question about UCC28019.

Part Number: UCC28019A


The customer's  waveform of MOSFET is as attached.

There is a section in which the gate is off and the MOSFET operates.

Certain samples perform this operation, and the EMI's conduction is also not good.

Can I know what the problem is?


1. Input : AC 220V

2. Output : 390V 0.8A