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UCC28056: UCC28056:

Sam Abeysekera
Prodigy 115 points
Part Number: UCC28056
Other Parts Discussed in Thread: UCC256404, , PFCLLCSREVM034

My requirements AC to DC converter with power factor correction AC input 85V -265V Frequency 60Hz output 32DC @ 12.5A High efficiency.

I am planning to use  parts#

PFC=UCC28056B with  Controller UCC256404

I used UCC28056 Design calculator tool

I am using PFCLLCSREVM034 User Guide. This design used UCC28066B integrated with UCC25604

Do I have to change the above reference design values according to the calculator for my requirements?

On the design calculator it has A,B, C, On the reference schematic part is B

Please advice ASAP

Regards

Sam

  • 0
    TI__Mastermind 24375 points

    Hi Sam,

    Thank you for the query on UCC28056.

    Yes, you will have to modify the calculator for 400W which is your power level. (the EVM is only rated for 168W). In the calculator, there is a tab on the top to toggle between the three variant. Please select variant B and proceed with the design inputs and calculations.

    Regards,

    Harish