Smart MPPT Solar Harvesting Module

This solar energy harvesting module features the bq25504 IC, designed specifically for ultra-low-power applications. Dimensions: standard PCB footprint with 2.54 mm pitch pin headers; weight: ~3 g; operating input voltage range: 0.3 V to 5.5 V; typical quiescent current: < 330 nA (with MPPT enabled), total power consumption in harvest mode: a few microwatts. Constructed with FR-4 PCB and surface-mount components for reliability and compact integration. The module implements an intelligent Maximum Power Point Tracking (MPPT) algorithm that continuously adapts to changing light conditions — including indoor ambient, cloudy daylight or dim artificial lighting — to extract maximum available power from connected solar cells or other DC sources (e.g., thermoelectric or piezoelectric generators). It autonomously regulates boost conversion and battery charging (to storage capacitors or thin-film batteries), enabling stable output even under sub-100 lux illumination. Ideal for powering microcontroller-based control modules in smart home systems, remote wireless sensors, and indoor IoT nodes where wired power or frequent battery replacement is impractical. Enables truly maintenance-free, long-term operation in off-grid, low-light, or space-constrained deployments.