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LM5119: 40V, 10A Dual Output Design

Quinn Cook
Prodigy 50 points
Part Number: LM5119

I recently got an LM5119 evaluation board and have been happy with the performance so far. I have an application that would require two 40V, 10A outputs and this part seems like a perfect fit. However, one thing I have noticed in the datasheet and online specification is that the maximum design current is 15A. 

Is the LM5119 able to do 40V,10A on both output channels? Or is each output channel designed only to do 8.5A (half of the maximum allowable current)?

If the LM5119 is able to have two 40V, 10A output channels is there a reference design anywhere. The Webench does not show any designs that would support this, only the interleaved option is available for the specification.

Thanks!

  • 0
    TI__Mastermind 26150 points

    Hello,

    There is no reference design for 40V, 10A. The LM5119 is a controller and the power is determined by selecting the right external parts such as:

    Power FETs, Sense resistors, output inductors, output capacitors, input capacitors, ramp and feedback loop.

    You may use an existing EVM and modify it according to your application. Please let me know for further support.

    Regards