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Question about LM5119Q

Di Wang
Expert 1740 points
Other Parts Discussed in Thread: LM5119Q

Dear Sir,

I want to design a 18-30Vin and 12V@30A DC/DC using LM5119Q. I dont see any Webench result but I've seen PMP7819. The input is 33-60V and the output is 12V@33A.

Could me any suggestion on what I should pay attention to  if I lower the input to 18-30V?

Thanks in advance.

  • 0
    TI__Mastermind 49671 points

    Hi

    By decreasing the input voltage, duty cycle increases and high side off-time decreases.

    Please make it sure that your duty cycle is not greatrer than Maximum Duty Cycle. (Please refer 'Maximum Duty Cycle' Section on the datasheet page 16)

    Regards,