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Half bridge driver with low-side disable

Ian Benton
Prodigy 80 points
Other Parts Discussed in Thread: TPS51604, UCC27222

Do you have a half-bridge driver with the facility to disable the lower FET automatically if its drain voltage is above zero, so that it can make a Synchronous buck go into discontinuous mode at low current?

  • 0
    TI__Genius 11770 points

    Hi Ian,

    Some of the lower voltage buck drivers have a feature like this. One is the TPS283X family, another is UCC27222, and TPS51604. 

    In terms of drain sensing in general, its more common on these low-voltage devices. It is harder to implement on higher voltage half-bridges  like our >100V drivers.

    Thanks,

    Alex M.