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LM5160 for Isolated DC/DC, 26V input, 5V1A output.

user4215035
Intellectual 620 points
Other Parts Discussed in Thread: LM5160

Hi,

     I want to design a isolated DC/DC, 26V input, 5V1A output. Can i use LM5160 to design it? please give me a solution.

     I ask you for help because the Webench can not simulate this application.

  • 0
    TI__Mastermind 40430 points
    Hello User4215035,

    I have notified the group associated with this part to address your concerns.

    Regards,
    Ulrich
  • 0 in reply to Ulrich Goerke
    Intellectual 620 points
    In addition, I konw the LM5160 can output 2 channals but I only need one isolated DC/DC, don't need non isolated.
    The input voltage is 26V, but maybe it can reach 40V.
  • 0
    TI__Intellectual 2320 points

    Hello,

    You should not have a problem using the LM5160 for the application that you have stated here.

    In fact, I was able to create the Fly-Buck design with the LM5160 from the WEBENCH Desginer tool as well in the LM5160 product page. in the TI website.

    Just type in 20V -40V and set 5VOUT and 1A as the output parameters with the ambient temp set at 30C. Don't forget to check the 'Isolated Output' option below the Ambient temperature option. That enables the Fly-Buck topology option. If you still have trouble generating the design, do let me know. I will send you a paper drawing for you application.

    On another note, what is the full load output voltage regulation requirement in your application? Can it be around +/-10%? Do you need a tighter regulation that that? If you need a tighter regulation, we will need to go with an optocoupler based Fly-Buck solution.

    Regards,

    Sourav

  • 0 in reply to Sourav.Sen
    Intellectual 620 points
    Sourav,
    Thanks a lot.
    But I cann't find the Fly-Buck topology option below the Ambient temperature option. Maybe your Webench is different with mine?
    Can I send the printscreen of LM5160 webench to you?