TPS56C215: PGND & AGND

Hong Jieun

Prodigy 240 points

Part Number: TPS56C215

Hi,

I have a question about TPS56C215.

I was wondering if i could use same GND plane with AGND and PGND.

In datasheet, there is a single point AGND to PGND connection.

Is it okay to tie both GND plane without any distinction between AND and PGND?

9 months ago

0 Calan Elaya 9 months ago

TI__Expert 5695 points

Hello,

AGND and PGND cannot be tied together. AGND is a quiet GND plane. Connecting them together fully could cause noise coupling. It needs to be a single point to avoid noise coupling.

Please refer to the Layout Guidelines in the datasheet.

Datasheet: https://www.ti.com/lit/gpn/tps56c215

Best,

Calan

Power management

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TPS56C215: PGND & AGND