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TPS548A29: Design review inquiry

JH Shin
Mastermind 8030 points
Part Number: TPS548A29

Hello,

My customer designed the TPS548A29 for a power module as below.

TPS548A29.pdf

1. Please review whether there is a problem with the customer's circuit.

2. When tested using a loader, it operated normally only up to 12.5A. is this normal?

Thank you.

JH

  • 0
    TI__Mastermind 19150 points

    There are two schematics:  one has a 9.76kohm and the other 4.53kOhm on the current limit.   And the schematic is light on spec details.

        I would expect U1 to limit current around ~7A and the U2 around ~13A.

    What does operate normally mean?   What is the failure mode you are observing.   Do you have a pcb layout?   

    Attached are some observations.

     TPS548A29_dd.pdf