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PMP6712: pmp6712 active buck snubber operation

Mert Karadeniz
Prodigy 30 points
Part Number: PMP6712

Hi all,

Could someone please briefly explain me the operation principle of the active buck snubber that is used in pmp6712 circuit schematic.

Thank you very much for your time and consideration.

Kind regards,

Mert.

  • 0
    TI__Genius 13445 points
    Hi Mert,

    Thanks for considering our design, I have contacted the appropriate team to help address your concerns.
    They will reach out to you as soon as possible.

    Thanks for your patience.

    Regards,

    -Mamadou
  • 0
    TI__Expert 5425 points
    Hi Mert,

    The buck active snubber waits for the SNUB voltage to reach 75V, then it turns on the switch Q27, the inductor starts to charge and decreases the voltage on SNUB. The energy is recycled to the output. This cycle happens at the same frequency as the main power supply switching frequency.

    Thanks,
    Robert