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TPS65400: About Fsw waveform of TPS65400

Shotaro Kosuge
Prodigy 20 points
Part Number: TPS65400

The Fsw waveform of the TPS65400 on the board under investigation is as shown in the attached waveform.
Duty is not constant. Is this operation normal?
A 2A output block is used, but the load is light.

  • 0
    TI__Genius 15135 points

    Hi, Sir

    1. Is loading changing when you probe the waveforms? (Suggest to probe the waveforms at constant loading.)

    2. Could you send me schematic for reviewing?