Micromppt

UPDATE 2/7/25: Successfully tested the SPV1040 test board charging a supercapacitor and lipo. I redesigned a more compact, optimized PCB with atopile v3. Gerbers/PCBA files are now built by running $ ato build -t all as of V3. See the atopile documentation for more details

Designed for low power solar powered devices. Max panel operating voltage = 5.5V

All of the design files and Gebers/BOM/CPL files for PCBA can be accessed here.

Based on the ST SPV1040 solar charging PMIC. See the AN3319 for additional resources on the operating modes and efficiency calculations.