Thermal or energy harvesting battery charger w/ additional buck converterDesigned by ceech, Ships from Slovenia
The device is designed to efficiently extract microwatts (µW) to milliwatts (mW) of power generated from a variety of high output impedance DC sources like photovoltaic (solar) or thermal electric ...Read More…
The device is designed to efficiently extract microwatts (µW) to milliwatts (mW) of power generated from a variety of high output impedance DC sources like photovoltaic (solar) or thermal electric generators (TEG) without collapsing those sources. The battery management features ensure that a rechargeable battery is not overcharged by this extracted power, or depleted beyond safe limits by a system load.
In addition to the highly efficient boosting charger, the bq25570 integrates a highly efficient, nano- power buck converter for providing a second power rail to systems such as wireless sensor networks.
Ultra Low Power DC-DC Boost Charger
Input voltage should be kept below 4.2V. Not all input voltage / battery type combinations work well. Some input voltage tweaking might be necessary for optimal results.
Settings calculator link: https://github.com/ceech/BQ25570
Storage On the board there is a LiR2450 socket. There are also two sockets for optional 2.7V super capacitors.
Dimensions of the board are: 38mm x 44mm
Urs | Jan. 29, 2018
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