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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 docs/simulation/run_simulations.py

9 commits ← Back to file
Update 50 file(s)
TylerK · d5ee8bd · 1mo ago
Update 59 file(s)
TylerK · 3b69d9a · 1mo ago
Revision 4: first-build audit. Bypass caps assigned to their own supply pin (worst distance 62.5mm -> 10.0mm), signal v…
TylerK · daee549 · 1mo ago
Revision 3: doubled the final width targets and gave every resistance-dominated case its own parallel path. 2,785 segme…
TylerK · 8c11b49 · 1mo ago
Restore the before/after table for the simulation-driven copper fixes, relabelled as before/after the fixes and with th…
TylerK · cfca2ed · 1mo ago
Board update: 4 unconnected items (from 13), 0 electrical and 0 mechanical DRC findings, silkscreen findings 73 -> 10;…
TylerK · 337e32d · 1mo ago
Rev 2: full re-place and re-route -- 0 different-net electrical defects and 0 mechanical defects (rev 1 had 86 genuine…
TylerK · 5e9e6ad · 1mo ago
Simulation follow-up: add a parallel stitch trace for the /VBATT routing-length problem the first fix left unresolved -…
TylerK · 49323b0 · 1mo ago
Replace discrete-analog board with MCU/IC redesign: STM32G031 P&O MPPT + CC/CV firmware, LM5175 buck-boost, INA180 curr…
TylerK · e48ba30 · 1mo ago