TIBQ25570RGRR
Overview
The BQ25570RGRR is an ultra-low power energy harvesting management IC designed to extract microwatts to milliwatts from high-impedance sources like solar, thermal, and piezo-electric generators. It integrates a boost charger and a programmable nanopower buck converter to provide a regulated output voltage while maintaining an extremely low quiescent current of 488 nA.
Why Choose This Part
It features a cold-start voltage of 600 mV and can continue harvesting from inputs as low as 100 mV once started. The integrated Maximum Power Point Tracking (MPPT) optimizes energy extraction from various sources, and the built-in buck regulator eliminates the need for a secondary LDO, maintaining high efficiency up to 93%.
Applications
Key Specifications
Getting Started
Start by using the BQ25570EVM-206 evaluation module to test harvesting efficiency with your specific transducer. Ensure that the input capacitor (CIN) and storage capacitor (CSTOR) are low-leakage ceramic types to minimize energy loss in your layout. Use the programmable resistors to set the MPPT ratio and the buck output voltage according to your system requirements.
