Maybe you don’t need extra power layers in your PCB and using tracks for power distribution may be just ok. An interesting discussion with Eric Bogatin.
Chapters:
00:00 What is this video about
00:35 Maximum current through a PCB track
03:40 Stackups: SGSS, SGSG, GSSG (S – Signal, G – GND)
10:31 Stackups SGGS vs SGPS (P – Power)
37:10 Real examples – Measured noise
54:55 Real examples – Emissions
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