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TPS7A92: Layout Review

Part Number: TPS7A92

Hi Team,

Greetings for the day.

We are using the TPS7A9201 LDO in our Layout Board file. I had attached the images of the Board file and Schematics. Please review the layout and share your feedback with us.

The PCB we are using is of 12 Layers:

IC and discrete parts - Place on Bottom

Layers 2,4,9 and 11 are Ground

Thanks and regards

- Teja.

  • Hello Teja,

    I reviewed both schematic and layout. Some suggestions regarding the layout:

    1. Make the vias on the thermal pad as small as possible and add as many as possible.

    2. Connect GND plane from thermal pad to Pin 4 and make it bigger (like top side) to improve thermals.

    3. C416, R450 and R453 bring them as near as possible to the LDO by moving R472 a little further away. For optimization is better to have closer loops.

    4. Make the ground of C429 bigger.

    5. Why is the FB35 used? 

    Best,

    Eunize Tobias