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UCC2808A-1Q1: Choosing the transformer for isolated push-pull power supply

Bart
Expert 6310 points
Part Number: UCC2808A-1Q1
Other Parts Discussed in Thread: PMP9522

Team,

We are working on a design for push-pull power supply with UCC2808A in an EV application. Do you have any recommendations for a transformer (ideally if fitting to the below specs)?

Thanks for your feedback and help.

TI Customer

  • Transformer topology: Push-Pull
  • Input voltage: 30V
  • Output voltage 1: 25V
  • Output current 1: mA
  • Switching frequency: 500kHz
  • Saturation flux density (at 125 °C): over 300mT
  • Insulation (primary to secondary): reinforced (>1500VDC)
  • Insulation (secondary to secondary): basic
  • Clearance (primary to secondary): >7.3mm
  • Creepage (primary to secondary): >7.6mm
  • Temperature range: -40°C to 125°C, Automotive qualified

  • 0
    TI__Mastermind 25570 points
    Hello Bartosz
    I'm afraid I cannot recommend a specific part. The problem is that most transformers are custom parts and are specifically designed for a particular application. TI used a Pulse Engineering PA0173 transformer in the PMP9522 UCC2808 reference design but I can't give you any specific guidance beyond that. TI uses several of the major magnetic manufacturers, Wurth, Pulse Engineering, ViTEC and Renco among them and I'd suggest that you approach them with your specifications. They may already have something close to your requirements.
    Regards
    Colin