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TPS28225: Is there a duty limit on TPS28225

David Kim2
Genius 3305 points
Part Number: TPS28225

Hi

Is there a duty limit for TPS28225 as well?
Ask if there is a possible min/max value.

Thanks

  • +1
    TI__Genius 11770 points

    Hi David,

    The part does not have an inherent limit to duty cycle; it can hold UGATE on or off indefinitely as long as its set up properly for that.

    The bootstrap supply for the high side does impose a duty cycle limit because it requires LGATE to turn on occasionally to recharge. It is usually possible to reach very high duty cycles of >98% using the bootstrap circuit, but it must be designed well.

    It can hold off in DC, but small pulses can be an issue. There should be no pulses under 30ns in width. The duty cycle that corresponds to depends on the Fsw of the system so I can't give a number.

    Thanks,

    Alex M.

  • 0 in reply to Alexander Mazany
    Genius 3305 points

    Hi Alexander

    Thanks for your resoponse.

    Thanks