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LM51551-Q1: Skip pulse explain

Lanxi Li
Expert 7075 points
Part Number: LM51551-Q1


Hello team,

Do you have any more detailed description about the pulse-skipping? What is about the working mechanism and configuration method of the pulse-skipping?

Thank you.

Lanxi

  • 0
    TI__Mastermind 23800 points

    Hi Lanxi,

    When operating conditions result in a ON pulse width less than minimum on time, the IC enters pulse-skipping mode. In this mode, the device keeps the power switch off for several switching cycles to keep the output voltage from rising above the regulated voltage. This operation typically occurs in light load condition when the PWM operates in discontinuous mode.

    You may refer to SLVA353 for pulse-skipping.

    Best Regards,

    Feng Ji