Got my pcb orders yesterday and was very excited to assemble one. Unfortunately it didn’t work on my first test. It’s abnormally consuming too much power around 1A without even a load on it and the output voltage is way below 5v. 🙁 I went to view the schematics again and found out that I connected some of the components wrong. So I tried cutting some traces and re-routed some of the components. I re-tested it again and this time the output voltage is 5.2v and consumption without load is just what I expected. It works! 🙂
Well, not really. Haha..😂 I read somewhere before that it’s very important to use short and wide traces for high switching boost converter but obviously I forgot to consider that with the design of my PowerSwitch. Eugene also mentioned something about this on my Facebook page. This is probably the reason why i’m hearing a high-pitched squealing noise when powering a Pi 3. What do you think?
I’m currently working on a power board for Game Boy Zero which I will be calling the tinkerBOY PowerSwitch. It’s supposed to be a builtin upgrade for my tinkerBOY Controller v3.0 but I decided to design it separately and integrate a slide switch. This way, it’s not limited to just my v3 but can be used by anyone using any controller board as well as my other controllers like the v1.1, v1.2, v2.0.
The 3 most important features will be 5V boost, battery charger, and a safe shutdown feature. I’m almost done with the design and I will be ordering some PBCs soon so I can test it. So don’t forget to subscribe to my facebook page at https://www.facebook.com/tinkerBOY/ for updates.