Platform forum

2 GND planes (Power Switching Supply course)

nicolas.logioia , 07-20-2017, 08:04 PM
Hello people!

I finished working with the Switching Supply project (the course was very useful!!)

I'd like to know why would you use 2 GND planes on a PCB (this having 6 layers in total, in this case). I could make it more simpler with one plane. Also, manufacturing the board would be very expensive (like 200 bucks in seedstudio, 5 units min., 6 layers). Could I re design the board using 2 layers without getting EMI problems just to make things cheaper?

robertferanec , 07-21-2017, 02:17 AM
If you have a look at their reference design, you will notice they have done it on 4 layers (I attached the file). I would probably not go for 2 layer PCB - it could be too noisy and I am not sure about quality of the outputs.

In the course I used 6 layers as I wanted students to practice on a multi-layer PCB (more than 2 layers). Also in many applications you will find the implementation of this power supply done very similar way as is done in the course.

Use our interactive Discord forum to reply or ask new questions.
Discord invite
Discord forum link (after invitation)

Didn't find what you were looking for?