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TPS55288: TPS55288 for USBC Buck-Boost Convertor @8A

George Huang
Intellectual 260 points
Part Number: TPS55288
Other Parts Discussed in Thread: LM251772, LM5175

Tool/software:

Hi,

Can I use TPS55288 as an USBC Buck-Boost Convertor: Input range 5V-20V, output 12V, maximum current 8A?

If not, can you please recommend one for this application?

Thank you.

  • 0
    TI__Guru 66350 points

    Hello George,

    This is dependent on the cooling you have available. In general I would recommend having a look to LM251772 for this power range. This has all 4 switches externally which makes it easier to spread heat.

    Best regards,
    Brigitte

  • 0 in reply to Brigitte
    Intellectual 260 points

    Hi Brigitte,

    Appreciate the fast feedback. 

    I tried the WEBENCH with the LM251772, with " Input range 5V-20V, output 12V, maximum current 8A

    , nominal 6.7A, max ripple 2%", and got the following failure message:

    Design cannot be created!

    Your preferred device does not work with the inputs you selected.

    This device/topology does not support required Output Power. OpVal table param temperature > 150°C

    Can you please advise a solution for this?

    Thanks,

    George

  • 0 in reply to George Huang
    Intellectual 260 points

    Is there any concern if I use LM5175 for this application? or better solution definitly appreciated.

    Best Regards,

    George