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UCC28742: design help

Mike Gilliom
Prodigy 10 points
Part Number: UCC28742


Tool/software: 

The datasheet for this part seems to indicate that the max power point occurs when:
-the Ics produces a peak voltage of 770mV (Vcst(max) on the datasheet) AND 
-when the frequency is at 105kHz

Although the design worksheet I downloaded seems to indicate that 80kHz is the max frequency.
I filled out the design worksheet, but It's not clear whether my design will yield the desired output, or if there are any other problems.  
There are a couple of places where the text in the design worksheet is red, but I don't see any values that are specifically concerning.

Can someone double check me on this and tell me if the design worksheet is indicating a problem?

sluc652b.xlsx

Thanks,
Mike
  • 0
    TI__Genius 12795 points

    Mike,

    Please give us few days to check.

    Thanks

  • 0 in reply to Ning Tan
    TI__Mastermind 24375 points

    Hi Mike,

    Thank you for reaching out. I will cover for Ning in his absence and they will take over once they are back in office.

    I think 80Khz will be safe to design with this part as mentioned in the excel calculator.

    The red cells are ok and these look to be around the desired output OVP point. So this is fine.

    Regards,

    Harish