An efficient piezoelectric energy-harvesting interface circuit using a Bias-Flip rectifier and shared inductor
Name
Ramadass-2009-An efficient piezoelectric energy-harvesting interface circuit using a Bias-Flip rectifier and shared inductor.pdf
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748.36 KB
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Checksum (MD5)
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Author(s)
Ramadass, Yogesh Kumar
Chandrakasan, Anantha P.
Date Issued
May 2009
Journal
IEEE International Solid-State Circuits Conference - Digest of Technical Papers, 2009. ISSCC 2009
Publisher
Institute of Electrical and Electronics Engineers
Citation
Ramadass, Y.K., and A.P. Chandrakasan. “An efficient piezoelectric energy-harvesting interface circuit using a bias-flip rectifier and shared inductor.” Solid-State Circuits Conference - Digest of Technical Papers, 2009. ISSCC 2009. IEEE International. 2009. 296-297,297a. ©2009 IEEE.
Version
Final published version
Abstract
Energy harvesting is an emerging technology with applications to handheld, portable and implantable electronics. Harvesting ambient vibration energy through piezoelectric (PE) means is a popular energy harvesting technique that can potentially supply 10 to 100's of muW of available power. One of the limitations of existing PE harvesters is in their interface circuitry. Commonly used full-bridge rectifiers and voltage doublers severely limit the electrical power extractable from a PE harvesting element. Further, the power consumed in the control circuits of these harvesters reduces the amount of usable electrical power. In this paper, a bias-flip rectifier that can improve upon the power extraction capability of existing full-bridge rectifiers by up to 4.2times is presented. An efficient control circuit with embedded DC-DC converters that can share their filter inductor with the bias-flip rectifier thereby reducing the volume and component count of the overall solution is demonstrated. The circuit diagram and figures are also given.
MIT Department
Massachusetts Institute of Technology. Microsystems Technology Laboratories
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1109/ISSCC.2009.4977425
