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square inch power muxer

basically my 3v3 regulator + lipo charger power muxer combo from the lameboy

davedarko

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Description

Battery charging up to 500mA and powering any 3.3V project up to 600mA - uninterrupted 3.3V, just plug in 5V to your liking.

Details

Battery charging up to 500mA and powering any 3.3V project up to 600mA

Files

pwr.sch Eagle schematic file sch - 521.52 kB - 09/20/2018 at 10:53		Download
pwr.brd Eagle board file brd - 95.09 kB - 09/20/2018 at 10:53		Download
pwr.pdf schematic as pdf Adobe Portable Document Format - 16.67 kB - 09/20/2018 at 10:53		Preview

Archive.zip GERBER files Zip Archive - 40.57 kB - 09/20/2018 at 10:53		Download

Components

1 × TPS2113 Power Management ICs / Power Supply Support
1 × MCP73831 Power Management ICs / Power Supply Support
2 × 4.7 uF 0805 capacitor
2 × 1uF 0805 capacitor
1 × USB micro plug connector

View all 15 components

Project Logs

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social media stuff
davedarko • 09/20/2018 at 11:39 • 0 comments

Here's a link to the instagram image, let's see how it performs :)
https://www.instagram.com/p/Bn8ks4_HaCv/
boards are ordered at oshpark
davedarko • 09/09/2018 at 13:42 • 0 comments

I went over the design with a rested eye and everything looked good to go - hope it makes it in time to test, but I call it verified since it's working in my #LAMEBOY - another ESP12 handheld already anyway. I used super-swift but I was too cheap for upgrading the shipping :D
Also ordered them on aisler with a stencil, because why not?!

View all 2 project logs

Discussions

Jarrett wrote 09/07/2018 at 22:44

Woah, I like the TPS2113A

Are you sure? yes | no

davedarko wrote 09/07/2018 at 22:45

me too, it sounds a bit pricey if you compare it to a diode solution. But then again you can't really compare that to a diode solution :D

Are you sure? yes | no

deʃhipu wrote 09/07/2018 at 22:59

Well, I just use the power switch to switch between battery and usb -- no diode :)

Are you sure? yes | no

davedarko wrote 09/07/2018 at 23:16

@ꝺeshipu wouldn't you reset / restart your gadget that way?

Are you sure? yes | no

deʃhipu wrote 09/07/2018 at 23:39

Sure, but I don't mind. I guess I could add a large capacitor if I wanted to prevent that.

Are you sure? yes | no

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