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UCC28910: Transformer design of UCC28910

takahiko yokota
Mastermind 7135 points
Part Number: UCC28910

Hi

My customer will use UCC28190.
They require the document about trans design.
If you have those document, could you give me them?

Best regadrs
Yokota
  • 0
    TI__Guru* 85506 points

    Hello Yakoto,

    The UCC28910 data sheet in has calculations for designing the flyback transformer.

    1. Equation 11 primary to secondary turns ratio (Nps)
    2. Equation 13 primary to aux turns ratio (Npa) 
    3. Equation 29 calculates the primary magnetizing inductance (Lp)
    4. We recommend the primary leakage inductance be less than 3% of Lp

    Regards,

    Mike