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UCC28061: Issue during startup vs UCC28064, channels not interleaving

Devon Murdza
Prodigy 10 points
Part Number: UCC28061
Other Parts Discussed in Thread: UCC28064, , UCC28064A

When recently testing the UCC28061 we had issues with the PFC during startup. It seemed as though for some duration the channels were not interleaving properly and therefore we had double the current before it started interleaving. If anyone has seen this before just wondering if maybe the UCC28064 handles this differently or better under startup conditions?

Thanks 

  • 0
    TI__Expert 8210 points

    Devon

    If you are starting a new design we recommend you start with our latest TM interleaved PFC controller UCC28064A.  It's the latest in the UCC2806x family.

    Do you have details on your design, such as a schematic and waveforms of this operation?  Before we can comment on the startup behavior you're seeing we'd like to better understand what is going on.

    Best Regards,

    Eric