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How to select component values for TPS54310 according to current value?

Bilal Ahmed
Prodigy 175 points
Other Parts Discussed in Thread: TPS54310

Respected Sir/ Madam:

 

I am using TMS32C6713B. And I am stuck at the Power regulator design (using TPS54310). I am using TMS32C6713 DSK Schematics as a reference. My problem is that I need current more than 1.5A from the 3.3V supply. But the DSK schematic mentions that “the component values have been selected for 1.5A operation”. Further, it is mentioned that values are calculated with Swift Design Tool.

The bottle neck is that I am unable to find Swift Design tool anywhere for download or online use. I am also unable to find guidelines for component values selection. I have also used SwitcherPro for Schematic generation but the component values differ from the values given in DSK schematics (although it was for the same voltage and current ratings).

 

Please provide me some link to swift design tool or some guidance about component values selection.

Thanks for your anticipation.

  • 0
    TI__Guru**** 191445 points

    There are many possible "correct designs" for a given set of input conditions.  The design algorithms may differ slightly to choose the output filter components and compensation network.  You can use switcherpro or if you prefer manual calculations you can use the methods outlined here; http://focus.ti.com/general/docs/lit/getliterature.tsp?literatureNumber=slva104a&fileType=pdf  In any case you can expect that the components will differ slightly from the DSK you reference,

  • 0 in reply to JohnTucker
    Prodigy 175 points

    Dear Tucker!

    Thanks for your comments. I would prefer the circuit used in DSK as it is designed by experts and is used by TI in many Kits. So i would be really thankful if you tell me the component values for 3A current at 3.3V i.e. kindly tell me which values need to be changed if i want 3A@3.3 and what are the new values.

    looking forward for your early response.

    Reagrds,

    Bilal

  • 0 in reply to Bilal Ahmed
    TI__Guru**** 191445 points

    That schematic was most likely designed by someone in the DSP group.  I have no direct knowledge of it.  If you can provide a copy, I may be able to give you some advice.  I may also be able to provide a copy of the old SWIFT designer software.  If I can it will be "use at your own discretion".  We do not provide any support for that tool as it has been long discontinued.

  • 0 in reply to JohnTucker
    Prodigy 175 points

    Dear Tucker!

    Thanks for your early response. I have posted my question on DSP Community. I hope they will help me overcome my problem. I shall contact you again if needed.

    Thanks again

    Bilal