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UCC28070 and Discontinuous Current Mode

Ralph Crumrine
Prodigy 40 points
Other Parts Discussed in Thread: UCC28070

Will the UCC28070 properly control a PFC converter in a discontinuous current mode of operation; i.e., relatively small inductor is used without regard to lowest EMI considerations?

  • TI__Mastermind 31580 points
    Hi Ralph,

    When you say "relatively small inductor" do you mean a low value of inductance, i.e. a value that would keep the PFC choke current discontinuous at relatively high % of the full load capability?

    What are the EMI considerations, conducted or radiated effects?

    Thanks

    Peter