TPS54228: SGND PGND

Shay Mor

Intellectual 870 points

Part Number: TPS54228

Hi,

In TI datasheet talked about SGND and PGND but in them layout it’s seems that it’s not implemented:

in my layout i think that need to separate the SGND and PGND like the red line, please advise:

over 4 years ago

0 Shay Mor over 4 years ago

Intellectual 870 points

i think it's better like:

0 Kyle Patrick over 4 years ago in reply to Shay Mor

TI__Prodigy 30 points

Hi Shay,

The proposed layout you have included here will likely work fine, but we would recommend for the best results to use the layout detailed in the datasheet. As a side note, the datasheet layout does respect the rules regarding SGND and PGND. What is labeled as the Analog Ground Trace is the SGND. The lower feedback resistor connects to the SGND and the SGND connects to the PGND in one location.

Regards,

Kyle Patrick

Power management

Power management forum

TPS54228: SGND PGND