A 0.78mW/cm super(2) autonomous thermoelectric energy-harvester for biomedical sensors

A thin-film array-based thermoelectric energy-harvester (TEH) is assembled in a 0.83cm super(2) footprint and attached to a power management unit integrated in 65nm CMOS. A single-inductor topology with analog maximum-power-point tracking leads to a 68% peak end-to-end efficiency and <20ms tracki...

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Bibliographic Details
Published in2015 Symposium on VLSI Circuits (VLSI Circuits) pp. C278 - C279
Main Authors Rozgic, Dejan, Markovic, Dejan
Format Journal Article
LanguageEnglish
Published 01.06.2015
Subjects
Autonomous
Circuits
CMOS
Density
Energy harvesting
Footprints
Thermoelectricity
Tracking
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Summary:A thin-film array-based thermoelectric energy-harvester (TEH) is assembled in a 0.83cm super(2) footprint and attached to a power management unit integrated in 65nm CMOS. A single-inductor topology with analog maximum-power-point tracking leads to a 68% peak end-to-end efficiency and <20ms tracking time. A 645 mu W regulated output power (effective 3.5K) is harvested in-vivo from a rat implanted with our TEH, to demonstrate true energy autonomy in real environment while achieving a 7.9x improvement in regulated power density. The autonomous operation is measured down to 65mV TEH input.
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SourceType-Conference Papers & Proceedings-2
ISBN:9784863485020
4863485026
DOI:10.1109/VLSIC.2015.7231289