Power ElectronicsShipping
SunTrack 300 Solar MPPT Charger
Digitally controlled MPPT charger using perturb-and-observe with adaptive step, supporting lead-acid and LiFePO₄ profiles with remote telemetry.
Block diagram
Selected block
PV Input
Reverse-polarity FET
Connects to: GaN Buck
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Specifications
| PV input | Up to 100 V |
| Output | 12/24 V, 25 A max |
| Peak efficiency | 98.2% |
| Tracking | Adaptive P&O, 99.5% |
| Topology | Synchronous buck, GaN |
| Interface | RS-485 / Modbus, BLE |
Engineering breakdown
- 01
Power stage
GaN half-bridge at 200 kHz shrinks magnetics while keeping thermal rise under 35 °C.
- 02
Control
Digital current-mode control with feed-forward from PV voltage for fast cloud transients.
- 03
Protection
Reverse polarity, PV back-feed, over-temperature derating and battery-temp compensation.
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