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LM3488: Question about abnormal waveform.

Part Number: LM3488

Hi

I designed SEPIC Converter with LM3488.

Intermittently, abnormal switching waveforms occur as shown in the attachment.

Do you have any doubts?

It is not much different from the reference circuit provided by TI.

Thanks.

  • Hello, 

    Thanks for reaching out. What are the specs of your design (Vin, Vout, Iout, switching frequency)? Under which conditions do you see this behavior? To which reference circuit are you referring to (one in the datasheet or to the AN-1484 Designing A SEPIC Converter)? 

    Kind regards, 

    EM