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UCC24624: Ton duration change

Part Number: UCC24624


Hi TI team,

Using UCC24624 on a LLC (14Vx40A output), I see strange behaviour on VGx.

Around 10A current ouput, Vgx ton duration are changing (see yellow/pink signals).

I have try to change Rvss resitor to 220 Ohms, without success.

I know, no RC damper... :-(

1. Which kind of filter values are needed on Vdx pins ?

2. Is aditionnal diode (as schottky) is needed to improve VDx detection ?

Thanks for any ideas