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Earlier this week at the IDTechEX Energy Harvesting show, we had a chance to speak with John Carpenter, System Engineer at Texas Instruments, on the ultra low power boost converter charger energy harvester. Check out the video to hear what he had to say!

Evaluation Module for BQ25504 Ultra Low Power Boost Converter with Battery Management

bq25504EVM-674 – Ultra Low Power Boost Converter with Battery Management for Energy Harvester Applications. This EVM is programmed from the factory for settings compatible with most MCU’s and 3V coin cell batteries. The EVM is programmed to deliver a 3.1VDC maximum voltage (OV) for charging the storage element and the under voltage is programmed to 2.2VDC. The VBAT_OK indication toggles high when VSTOR ramps up at 2.8VDC and when VSTOR ramps down to 2.4VDC. The user’s guide describes the bq25504 evaluation module (EVM), how to perform a stand-alone evaluation and allows the EVM to interface with the system and host.

Features
-Evaluation Module for bq25504
-Ultra Low Power Boost Converter/Charger with Battery Management for Energy Harvester Applications
-Resistor-programmable settings for under voltage, over voltage for flexible battery management Including POTs for fine tuning the settings (not populated)
-Programmable push-pull output Indication for battery status (VBAT_OK)
-Test Points for Key Signals Available for Testing Purpose – Easy Probe Hook-up
-Jumpers Available – Easy to Change Settings 

www.ti.com

Posted by Janine E. Mooney, Editor

November 18, 2011