BQ25504 is an Ultra-Low-Power Boost Converter with Battery Management for Energy Harvester-Nano-Power Management

This post sponsored by Texas Instruments.

BQ25504 is the first of a new family of intelligent integrated energy harvesting nano-power management solutions that are well suited for meeting the special needs of ultra-low-power applications.

The device is designed to efficiently acquire and manage the microwatts (µW) to miliwatts (mW) of power generated from a variety of DC sources like photovoltaic (solar) or thermal electric generators. BQ25504 is the first device of its kind to implement a highly efficient boost converter/charger targeted toward products and systems, such as wireless sensor networks (WSNs) that have stringent power and operational demands. The design of the BQ25504 starts with a DC-DC boost converter/charger that requires only microwatts of power to begin operating. Once started, the boost converter/charger can effectively extract power from low-voltage output harvesters such as thermoelectric generators (TEGs) or single- or dual-cell solar panels. The boost converter can be started with VIN as low as 330 mV, and once started, can continue to harvest energy down to VIN = 80 mV. BQ25504 also implements a programmable maximum power point tracking sampling network to optimize the transfer of power into the device. Sampling the VIN_DC open-circuit voltage is programmed using external resistors, and held with an external capacitor (CREF).

By: Rachel Kalina

For more information about this product, click here.
For detailed information about the tool mentioned above, click here.
To request a sample, click here.
To download a datasheet, click here.

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