TPS7A52: Schematic and PCB review for TPS7A52

Manimaran Kanesan

Part Number: TPS7A52

Dear TI,

I am using TPS7A5201RPST and completed the schematic and PCB. The input supply to TPS7A52 is VUSB and output is 4.95V. Can you please review below and comment. Thank you.

Below is the PCB for the above schematic, the thin blue line from via to via shows track in bottom layer.

over 4 years ago

0 Manimaran Kanesan over 4 years ago

Intellectual 460 points

Dear TI,

The image in the above post does now appear in my browser please see the image below.

Schematic

PCB

0 Stephen Ziel over 4 years ago in reply to Manimaran Kanesan

TI__Mastermind 35205 points

Hello Manimaran,

This design and layout look good.
Please make sure that the adjacent layers to the feedback pin node are low noise.
If there is high dV/dt transient or switching noise in a PCB layer adjacent to the feedback pin trace, it can capacitively couple into this node and inject noise into the linear regulator.

Thanks,

- Stephen

0 Manimaran Kanesan over 4 years ago in reply to Stephen Ziel

Intellectual 460 points

Hi Stephen,

Thank you for the review and comments. The adjacent layer for FB pin is ground, good to know this.

BRgds

Manimaran

0 Stephen Ziel over 4 years ago in reply to Manimaran Kanesan

TI__Mastermind 35205 points

Sounds good Manimaran. It looks like a robust design and layout.
Let us know if you need anything else.

Thanks,

- Stephen

Power management

Power management forum

TPS7A52: Schematic and PCB review for TPS7A52