TIbq24650
Overview
The bq24650 is a highly integrated switch-mode battery charge controller designed specifically for solar power applications. It features a constant frequency synchronous PWM controller with high-accuracy current and voltage regulation, including a programmable Maximum Power Point Tracking (MPPT) loop. The device supports various battery chemistries including Li-Ion, LiFePO4, and Lead-Acid with input voltages ranging from 5V to 28V.
Why Choose This Part
The bq24650 offers a 600-kHz synchronous buck controller that achieves high efficiency while minimizing external component size. Its integrated MPPT functionality simplifies solar charger design by allowing resistor-programmable input voltage regulation, ensuring the solar panel operates at peak power. Additionally, the low 15uA sleep current and 0.5 percent charge voltage accuracy make it ideal for high-performance, energy-sensitive designs.
Applications
Key Specifications
Getting Started
Start development with the BQ24650EVM evaluation module to test MPPT performance and charging cycles with your specific battery chemistry. Engineers should use the provided resistor-divider formulas in the datasheet to set the MPPSET pin voltage according to the solar panel's maximum power point. Ensure the thermal pad of the 16-VQFN package is properly soldered to a ground plane for effective heat dissipation during high-current charging.
