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UCC256303: LOW INPUT availability

KIM Andy
Expert 2530 points
Part Number: UCC256303


Hello
My customer wants to develop a DC / DC controller with the UCC25630.
Input voltage is not normally 340 ~ 410V at PFC + LL.
The input voltage is to be applied to 80 ~ 90V.
WEBENCH seems to be able to design with the corresponding voltage.
Can you actually apply it as it is?WBDesign1286.pdf

  • 0
    TI__Mastermind 40580 points

    Hello Andy,

    Thank you for your interest in the UCC246303 LLC controller.

    Yes, the Webench-generated design should work properly, despite having a lower than usual input voltage range.
    Webench implements the same design procedure as found in the datasheet.

    If you would like to double-check, you can run the input and output numbers through the Excel calculator tool as well:

    The resulting component values should be very similar, although they may not be exactly the same.

    Regards,

    Ulrich