Tri-source energy harvest control IC is developed by MIT

Published:2012/7/11 1:11:00 Author:Ecco From:SeekIC

According to the researcher at Massachusetts Institute of Technology (MIT), the control circuitry for an energy harvesting platform has been developed. The platform works with natural light, heat and vibrations.

It is useful to combine solar, thermal and vibration energy sources as they are intermittent. So the multisource architecture has the ability to capture and deliver power even under wider circumstances. However, the energy levels and optimization and control strategies are also diverse. MIT indicates that thermoelectric harvest sources typically generate only 0.02 to 0.15 volts, while photovoltaic cells produce 0.2 to 0.7 volts while vibration sources can produce up to 5 volts. Until now the simplest and most common method is to switch the highest energy code, but waste the energy input from other sources.

The control IC uses dual-path architecture to allow energy to be used directly or to be stored and the switch matrix. It is implemented in a 0.35-micron CMOS process.

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