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TPSM41625: Constant Current Buck Convertor Design

Danish Riaz
Prodigy 20 points
Part Number: TPSM41625

Hi,

I was hoping to see if there is any reference design for using the TPSM41625 as a constant current converter? 

  • 0
    TI__Genius 17905 points

    Hi ,

    No, we do not have a reference design for using the TPSM41625 as a constant current converter.

    Are you trying to drive a floating load, like an LED (string)? You could potentially try something like described in this application note (not the TPSM41625, but shows the concept).

    Regards,
    Kris

  • 0 in reply to Kris F
    Prodigy 20 points

    Hi Kris,

    Thanks for the response, I am looking for a  Constant current Buck convertor design. My output requirements are 5.5 to 6 V @ 11 Amps CC . I was looking into the TPSM41625 for its small form factor and its output ratings. I was wondering if I can use the output of the a current sense amplifier as a feedback for the buck convertor.

    Thanks


    Danish

  • 0 in reply to Danish Riaz
    TI__Genius 17905 points

    Hi ,

    I am not aware of a reason you would not be able to do something like shown in this article. The only thing to keep in mind is that by adding the current sense amplifier stages into the feedback loop, there may be an impact to stability. If you use very bandwidth amplifiers, I would expect this concern to be minimal.

    regards,
    Kris