search

wagiminator / Power-Boards

Collection of DC/DC Converters, Battery Chargers, and Power Supplies
Other
430 stars 65 forks source link

Suggestion of LiFePO4 MPPT Solar Charger output at 3.3V (no regulator) #11

Open Domigome opened 7 months ago

Domigome commented 7 months ago

I realized that there is few sources of boards around internet for this purpose, and that is how I found this repo, amazing work I must say!

I think there would be a nice chance more people end up here looking for a LiFePO4 MPPT charger with Load connectors at 3.3V since there is many boards for DIY projects that would happily and very efficiency run directly from it (ESP32 family for example).

Would be as simple as taking the existing out? I would like to give a try but I'm not so familiar with PCB design itself, would like to confirm first.

wagiminator commented 7 months ago

If you need exactly 3.3V at the output than you have to replace the MT3608 boost converter circuit with a buck/boost converter since the output voltage of the battery can be above or below 3.3V depending on the state of charge.