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UCC25600: PFC+LLC Solution

Francis Jiang
Expert 3570 points
Part Number: UCC25600


Tool/software:

Hi Team,

Do we have a solution for 400W-220Vac PFC+LLC? Requirements are shown as below:

  • When load is 400W, the LLC output should be 400W
  • When load is 200W, the LLC output should also be 400W, so the energy can circulate in the tank

Could you please provide your professional advices here? Thanks in advance.

BRs,

Francis

  • 0
    TI__Guru 50190 points

    Hi Francis,

    I am not sure I understand the question. Can you clarify? If the load is only 200W the LLC power stage can't dissipate 200W. The LLC will vary its frequency based on the load conditions and keep resonance across the full load range.

    TIDA-01494 is an example of a 480W design that might be a good starting point. 

    I hope this answers your question.