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PMP41043: Synchronous rectification

Raju Baddipadige
Prodigy 180 points
Part Number: PMP41043
Other Parts Discussed in Thread: TIDA-010062, C2000WARE

Hi,

I just went through your design. I want to understand more about how synchronous rectification is implemented. How did you implement synchronous rectification below and above the resonance frequency? Could you please share me code?

Best Regards,

Raju Baddipadige

  • 0
    TI__Expert 6650 points

    Hi Raju,

    This design is just modified from TIDA-010062, you may refer to the code in our C2000DigitalPowerSDK, the default path is below.

    C:\ti\c2000\C2000Ware_DigitalPower_SDK_4_03_01_00\solutions\tida_010062

    To explain our SR method,

    we turn on the SR synchronous with primary rising edge,  but clamp the SR pulse within half resonant period, which means turn off the SR ealier than primary falling edge when below the resonance frequency.