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UCC28063A: Parallel of four converters?

Allen Wachter
Expert 6640 points
Part Number: UCC28063A
Other Parts Discussed in Thread: UCC28070

My customer would like to know if it is possible to interleave four UCC28063A devices for a single output (from a single source)? 

From some other posts it appears this will not work but figured I would double check.

If this will not work can you recommend another PFC boost that will work in this configuration? 

Thanks!

  • 0
    TI__Mastermind 26735 points
    Hi Allen,

    Paralleling UCC28063A's can result in unequal current sharing between the phases and is not recommended. UCC28070 CCM Boost can support 4 interleaved PFC stages in parallel. Take a look at section 7.3.5 of the UCC28070 datasheet.

    Best Regards,
    Ben Lough