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UCC28632: Transformer parameters determination for multi-output flyback design

Pawel Drazkowski
Prodigy 60 points
Part Number: UCC28632

Hello, 

I would like to design a multi-output flyback converter (simplified topology and output voltages attached below).

UCC28632 documentation and WEBENCH tool mention only one output designs. I would appreciate any tips regarding design of the transformer for multi-output solution (especially how to determine primary inductance). 

Best regards,
Pawel 

  • 0
    TI__Expert 7080 points

    Hi Pawel,

    What you have to do it get the total output power , then converter it into one of the voltage and one output current. for example , the total output power of your design is 6.91W= 24V* 0.288A , then you can choose 24V/0.288A to calculate the primary inductance by using the WEBENCH tool and UCC28632 documentation.

    Thanks.