board

Solar MPPT Power System

Public Unreviewed

by TylerK

A 30 W solar battery charger with regulated 5 V and 3.3 V rails: an STM32G031 running perturb & observe MPPT and a CC/CV charge state machine, steering a TI LM5175 4-switch buck-boost through a single analog control input. Four-layer KiCad board, schematic and PCB generated from Python, with an electrothermal simulation run against the published board file.

hardwareboardpcbkicadsolarmpptpower-electronicsbattery-chargerbuck-boostmcustm32firmwarelm5175ina180current-sensegeneratedelectrothermal-simulationfirmware-testing
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History of kicad/generator-scripts/check_board.py

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Board update: 4 unconnected items (from 13), 0 electrical and 0 mechanical DRC findings, silkscreen findings 73 -> 10;…
TylerK · 337e32d · 1mo ago