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Platform forum

noisepic , 02-01-2018, 08:23 AM

I have low noise LDO supplied by a buck converter, these on top layer and layer 2 is GND plane only. I CONSIDER 2 way of Gnd design:
1. Seprate their gnd on top, having via to layer gnd2
2. Share the gnd, both gnd having via to GND at layer 2

Which case is better ?

robertferanec , 02-06-2018, 09:41 AM

Normally I just use one common GND plane. But ... I normally design digital CPU boards, it may not apply to your application.