TPS544B20: SW node layout

Hirotsugu Kobayashi

Part Number: TPS544B20

Hi, team.

Although it is described as "No GND plane under SW" in Fig. 46, the GND layer is arranged in EVM, is it necessary?

If necessary, do you need to remove GND of all layers?

Best Regards,

0 Hirotsugu Kobayashi over 6 years ago

Hi, team.

Is it OK to set the lower layer of the SW node to GND?
It is GND in EVM.

0 JohnTucker over 6 years ago in reply to Hirotsugu Kobayashi

Kobayashi-san,
We have someone looking into this and will respond soon.

0 Mathew Jacob1 over 6 years ago

Kobayashi-san,

Yes its perfectly acceptable to have ground plane under switch node. In fact it is not recommended to break up ground planes in any design.

Regards,

Mathew

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