First PCB: Power Supply Shield

Community PCB Design
1

I’m back to a project I started many months ago:

viewtopic.php?f=20&t=21119&p=98601#p98601

I think I’m ready to submit it to BatchPCB–kinda scary. It has two independent batteries and solar chargers; then a DC/DC booster; and an “emergency” (4) AA battery pack in case every thing else quits working. The goal is to create a 5V power supply that’s pretty redundant and can reliably deliver 1A.

Here is the schematic:

http://www.wsengineer.com/PShield/powershield2.pdf

It’s also attached.

And this directory contains the Gerbers etc:

http://www.wsengineer.com/PShield/

Would anyone mind taking a look at them? I’ve gotten some great feedback here before. I’m anxious to see if I can actually make this work!

2

I guess I should have attached the Eagle board files:

www.wsengineer.com/PShield/powershield2TOP.pdf

www.wsengineer.com/PShield/powershield2BOTTOM.pdf

3

i haven’t checked your schematic or wether the board is going to work but I’ll just give my 2 cents on your board:

first, i would avoid all 90 angles

second, I would beef up the size of the power tracks, a little to small for my taste.

third, i can’t tell if your ground plane is connected to ground or not, might want to double check that.

4

Thank you. I was worried about the power tracks. I’ll try to fatten them up. I’m curious, why are 90 degree corners bad. Are the tracks likely to break up at that point during etching?

5

Depending on the manufacturer sometimes you get “acid traps” at 90 degree bends. You really only need to avoid 90 degree bends when you get into higher frequencies; however, I just find it better to be safe than sorry.

heres a pretty informative thread on the subject: http://www.massmind.org/techref/postbot … y&tgt=post