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UCC24624: abnormal turn off

Bob Li
Prodigy 130 points
Part Number: UCC24624

UCC24624 is used for LLC SR driver.

there are abnormal turn off as the attched fig.

the SR mos turns off about 800ns before current ecoming zero and results higher power loss.

could you have some comments about the issue? Thanks in advance.

  • 0
    TI__Guru* 86286 points

    Hello,

    I have not seen that before could you send me a schematic to review?

    Also could you retake that waveform with CH2 Vds with more resolution (100mV/div)  I just want to see what that looks like.

    Regards,