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AC DC FlyBuck HV

Thibault ALBOUSSIERE
Prodigy 250 points
Other Parts Discussed in Thread: UCC28881

Hi,

Is someone has already make a Flybuck topology with a HV ACDC Buck controller ? as UCC28881

FlyBuck seems to be usually used with Vin < 80V, can we have problem with a small duty cycle ?

Thanks for your help !

Thibault

  • 0
    TI__Expert 4015 points
    HI Thibault, I don't think we have any Flybuck designs done for the UCC28881, but I don't see why you couldn't do it. For a buck design with low power and high input voltage the duty cycle will be very small as you say, but this is typical of most non-isolated universal input buck designs anyway.
    Thanks
    Billy