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UCC28740: Effects of Ringing

H.sin
Prodigy 40 points
Part Number: UCC28740

Tool/software:

Hi. team

The circuit is constructed using UCC28740.
When observing the waveform, there are specific points where ringing is occurring.
Please tell me if this affects the operation.
Details are given in the attached pdf.

TI_E2E_Q_ENG.pdf

  • +1
    TI__Guru 74115 points

    Hi,

    Ringing A is mainly from Ringing B which both are called DCM ringing due to snubber not enough damping.

    The DCM ringings should not cause sensing problems. Ivs is sensed when MOSFET turns on not during the ringing time.