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ucc256302

Other Parts Discussed in Thread: UCC256302, UCC25600

Hi,

         Can i use  this UCC256302 PWM controller for Full bridge LLC Resonant converter. 

  • Yasoda

    While UCC256302 can be configured to work in a full bridge configuration, it requires a large amount of external components so we do not recommend it. There are two main issues that cause this

    1. The gate drive signal from the high side needs to be stepped down to the low side
    2. The HS pin needs to stay connected to the switch node for the adaptive dead time control

    Using one of our previous generation resonant LLC controller like UCC25600 may be preferred since all the gate drive signals are low side referenced, so it requires much less external circuitry for a full bridge implementation.

    Best Regards,
    Eric