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UCC28950: Transformer Calculations in SLUA560D Application Note

Nafi Can Ereli
Prodigy 85 points

Part Number: UCC28950
Other Parts Discussed in Thread: UCC28951,

Tool/software:

Hello,

In the document titled SLUA560D: UCC28950/UCC28951 600-W, Phase-Shifted, Full-Bridge Application Note, how do the transformer calculation formulas change if a full-bridge rectification method is used instead of a synchronous rectifier in the output rectification stage?

Thank you,
Can

  • 0
    TI__Guru* 86286 points

    Hello,

    Your inquiry has been received and is under review.

    Regards,

  • 0 in reply to Mike O'
    TI__Guru* 86286 points

    Hello,

    The turns ratio of the transformer and primary peak and RMS currents will be correct for the transformer design in question.

    The peak current on the secondary winding will be the correct, but the output RMS current estimation for the single secondary winding will not be correct.  The secondary RMS current will be 2 times what the application note predicts.

    Thank you for interest in Texas Instruments (TI) products.  If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

    Regards,