A Colpitts Oscillator-Based Self-Starting Boost Converter for Thermoelectric Energy Harvesting With 40-mV Startup Voltage and 75% Maximum Efficiency

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This paper presents a Colpitts oscillator-based self-starting boost converter for thermoelectric energy harvesting. An enhanced swing Colpitts oscillator with a 10-stage voltage multiplier is adopted as a startup circuit so that the minimum startup voltage of 40 mV is achieved. As a main converter, a zero-current-switching boost converter with a dead time controller achieves the maximum end-to-end efficiency of 75%. The inductor used in the Colpitts oscillator is reused in the main boost converter to minimize the use of the inductor. Implemented in a 65-nm CMOS, the proposed converter that requires only two external inductors provides a regulated output voltage of 1.1 V from a thermoelectric generator with an internal resistance of 2.2 Omega over the input range of 40-200 mV.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2018-11
Language
English
Article Type
Article
Keywords

TUNED OSCILLATOR; MV; GENERATOR

Citation

IEEE JOURNAL OF SOLID-STATE CIRCUITS, v.53, no.11, pp.3293 - 3302

ISSN
0018-9200
DOI
10.1109/JSSC.2018.2863951
URI
http://hdl.handle.net/10203/246888
Appears in Collection
EE-Journal Papers(저널논문)
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