This paper presents a low power boost converter for thermoelectric energy harvesting that demonstrates an efficiency that is 15% higher than the state-of-the-art for voltage conversion ratios above 20. This is achieved by utilizing a technique allowing synchronous rectification in the discontinuous conduction mode. A low-power method for input voltage monitoring is presented. The low input voltage requirements allow operation from a thermoelectric generator powered by body heat. The converter, fabricated in a 0.13 μm CMOS process, operates from input voltages ranging from 20 mV to 250 mV while supplying a regulated 1 V output. The converter consumes 1.6 (1.1) μW of quiescent power, delivers up to 25 (175) μW of output power, and is 46 (75)% efficient for a 20 mV and 100 mV input, respectively. © 2010 IEEE.
CITATION STYLE
Carlson, E. J., Strunz, K., & Otis, B. P. (2010). A 20 mV input boost converter with efficient digital control for thermoelectric energy harvesting. In IEEE Journal of Solid-State Circuits (Vol. 45, pp. 741–750). Institute of Electrical and Electronics Engineers Inc. https://doi.org/10.1109/JSSC.2010.2042251
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