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TPS54424: Interposer Board

Ray Vincent Aranzaso
Mastermind 18180 points
Part Number: TPS54424
Other Parts Discussed in Thread: TPS54824

Hi,

Good Day. The customer is looking for an alternative to TPS54424RNVR and I suggest the TPS54824RNVR.

But for their current build, can they take an interposer board approach?

They are thinking of having a 0.8mm thick PCB in between TPS54424 and any other buck converter which is available in stock.

This is to enable their software testing activities and will be only for the current build.

Please advise. Thank you very much.

Best Regards,

Ray Vincent

  • 0
    TI__Genius 16632 points

    Hi Ray,

    I'm not sure I understand this correctly. Are you asking whether TPS54424 can be replaced by TPS54824? The answer is yes, the two parts are p2p compatible, the only difference is overcurrent limit.

    Let me know if you have further question.

  • 0 in reply to Miranda Gu
    TI__Mastermind 18180 points

    Hi Miranda,

    Good Day. Thanks for the response. I already checked that and both device are p2p compatible. The other question from the customer is it is ok to use interposer board approach for the future purposes for using alternative device like the 2 mentioned devices. Thank you very much.

    Best Regards,

    Ray Vincent

  • 0 in reply to Ray Vincent Aranzaso
    TI__Expert 7320 points

    Hi Ray,

    I'm slightly confused, now that the two devices (TPS54424 and TPS54824) are P2P, why would our customer still like to use a interposer board instead of replacing the device directly?

    If our customer plan to use another converter, it's ok to use a interposer board, but need to pay attention that the chip size of the alternative converter and its external components can be placed in the reserved area.