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Highly Integrated 3 V Supply Electronics for Electromagnetic Energy Harvesters With Minimum 0.4 V-peak Input
Date
2017-07-01
Author
Ulusan, Hasan
Zorlu, Ozge
Muhtaroglu, Ali
Külah, Haluk
Metadata
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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This paper presents a self-powered interface enabling battery-like operation with a regulated 3 V output from ac signals as low as 0.4 V-peak, generated by electromagnetic energy harvesters under low frequency vibrations. As the first stage of the 180 nm standard CMOS circuit, harvested signal is rectified through an ac/dc doubler with active diodes powered internally by a passive ac/dc quadrupler. The voltage is boosted in the second stage through a low voltage charge pump stimulated by an on-chip ring oscillator. The output is finally regulated to 3 V at the last stage. The voltage doubling rectification stage deviates by less than 40 mV from ideal expectation for the validated 0.15-1 V input voltage range. The full system delivers 3 V output to 4.4 M Omega load for input voltage of 0.4 V-peak, which is the lowest operable input voltage in the literature. The demonstrated system generates 9 mu W of dc power with 3 V stable output for 32 mu W input, whereas the circuit is able to supply even more output power for higher input power levels. The maximum efficiency of the rectification stage is 86%, while the full system efficiency is 37% and 28% for unregulated and regulated operation, respectively, when interfaced to an in-house electromagnetic energy harvester under 8 Hz 0.1 g vibration.
Subject Keywords
Vibration-based energy harvesting
,
Self-powered supply
,
Self-powered rectifier
,
Low voltage ac/dc conversion
,
Electromagnetic (EM) power generation
URI
https://hdl.handle.net/11511/46618
Journal
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
DOI
https://doi.org/10.1109/tie.2017.2677324
Collections
Department of Electrical and Electronics Engineering, Article
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H. Ulusan, O. Zorlu, A. Muhtaroglu, and H. Külah, “Highly Integrated 3 V Supply Electronics for Electromagnetic Energy Harvesters With Minimum 0.4 V-peak Input,”
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
, pp. 5460–5467, 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/46618.