For a one-off design its easier/better to play it safe and just add the filtering caps.
You don't want to have to redo the design or struggle debugging it later.
Intense mathematical design/optimization should be left for things you want to turn into a product
Yeah I've already finished the prototype, thats the board I've been been having problems with the I2
I omitted the ground planes around the filtering caps and thus far the output voltage has between 80-90mV ripple on it depending on the load. I didn't really know if ground planes around the caps would've helped here or not, I also wanted to eliminate as much noise as possible from the I2
C lines between the fuel gauge and uC, and between the uC and the output I2
If I ever get the board to work as I had planned I'll post the files (still got to do them yet, as previously mentioned I do most of mine by hand).
The projected goal here was to make a power supply board bigger than most people needed with added functionality over a basic psu while trying to stick to the guidelines on dunk's google page. I had planned for a single board to stack onto this one to give battery charging facilities too (after someone checked my maths
). I've already done a couple of simple boards to the guidelines but think I bit off more than I could chew programming wise this time.
The only other problem I've had with this board is ALL the components are SMD, the guidelines ask for through-hole versions too. Can't find any