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14.4V~137.5V to 12V isolated power solution

Ann_Lien
Genius 14430 points

Hello expert,

May I know if we have solution could support customer's requirement as below? Thanks a lot!!

  1. surge stopper to clamp 137.5V to 154V within 1s.
  2. 14.4V~137.5V to 12V buck controller.
  3. 12V to 12V isolated controller.
  4. output power are 60W/90W/120W/150W/180W.

If TI has better suggestion to meet 14.4V~154V to 12V isolated solution is also welcomed.

Best regards,

Ann Lien

  • 0
    TI__Expert 7395 points

    Ann,

    Thanks for the inquiry here!  I hope you are well. 

    Are all of these power levels 60W/90W/120W/150W/180W with the 14.4V-137.5Vin to isolated 12Vout? Or are those power levels for 12Vin to 12Vout? If they are for 14.4V-137.4Vin, what is the power level for 12Vin to 12Vout?

    Can you share the application this will be used in? That can help narrow down to the right control solution.

    Regards,

    John

  • 0 in reply to John Stevens
    TI__Genius 14430 points

    Hello John,

    They can accept two stage --> 14.4V-137.5Vin to 12V and 12V to 12Vout isolated. Or just one stage should be okay. And output power means 12V, 60W/90W/120W/150W/180W with isolated. This team is industrial PC and they want to build their own DC-DC isolated power standard board. Thanks a lot!

    Best regards,

    Ann Lien

  • 0 in reply to Ann_Lien
    TI__Guru 73785 points

    Hi,

    There is no exact match. A similar is like this PMP9256

    Your output power is 3 x difference. So you may need three different designs, one for 60W and 90W, one for 120W and 150W, and one for 180W.

    Your input voltage range is very wide about 11 to 1 (14.4V to 154V), which is very challenge to make a design.

    There is no good solution for this. You need to make substantial R&D to find out if it is a feasible idea.

    Alternatively, if you can add a stage at front as buck-boost to narrow down your input voltage to DC-DC, then it becomes feasible. But the resulted efficiency becomes lower and cost becomes higher.

    In short, please re-examine your idea, and if it is really what you need. 

  • 0 in reply to Hong Huang
    TI__Genius 14430 points

    Hello John,

    Thanks for your detail reply. I will consult customer for the input spec and give back to you. Thanks a lot!

    Best regards,

    Ann Lien

  • 0 in reply to Ann_Lien
    TI__Expert 7395 points

    Ann,

    Thanks! Let us know as you get updates. We will close this thread for now but please let us know if you get additional information.

    Regards,

    John