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TPS548A28: layout check

GARETH OU
Guru 10875 points
Part Number: TPS548A28

Hi

Would you please help take a look on our layout file and provide some comments?

Is there something needs to be modified? 

8802.brdTPS548A28.pdfTPS548A28 2.pdf

  • 0
    TI__Genius 9876 points

    Hi Gareth,

    The layout looks good overall. My only concern would be the layout of the remote sense. Currently, the VSNS- pin is tied directly to PGND. For proper remote sensing, you should have a pair of trace Kelvin sensed across a high-frequency bypass capacitor (0.1uF or higher) at the regulation point. If you doing a single-ended sense, then VSNS- should be tied to AGND with the shortest possible trace.

    Thank you,
    Tomoya

  • 0
    TI__Genius 9876 points

    Hi Gareth,

    I actually noticed one more. The soft start capacitor is currently tied to AGND, but they should be tied to VSNS-. 

    Thank you,
    Tomoya