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Design of efficient CMOS rectifiers for integrated piezo-MEMS energy-harvesting power management systems
Linköping University, Department of Electrical Engineering, Integrated Circuits and Systems. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0003-2056-4762
Linköping University, Department of Electrical Engineering, Integrated Circuits and Systems. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Electrical Engineering, Integrated Circuits and Systems. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Electrical Engineering, Integrated Circuits and Systems. Linköping University, Faculty of Science & Engineering.
2015 (English)In: 2015 European Conference on Circuit Theory and Design (ECCTD), IEEE , 2015, 308-311 p.Conference paper, Published paper (Refereed)
Abstract [en]

MEMS-based piezoelectric energy harvesters are promising energy sources for future self-powered medical implant devices, low-power wireless sensors, and a wide range of other emerging ultra-low-power applications. However, the small form factors and the low vibration frequencies can lead to very low (in μW range) harvester output power. This makes the design of integrated CMOS rectifiers a challenge, ultimately limiting the overall power efficiency of the entire power management system. This work investigates two different fully integrated rectifier topologies, i.e. voltage doublers and full bridges. Implemented in 0.35-μm, 0.18-μm, and 65-nm CMOS technologies, the two rectifier architectures are designed using active diodes and cross-coupled pairs. These are then evaluated and compared in terms of their power efficiency and voltage efficiency for typical piezoelectric transducers in such ultra-low-power applications which generate voltages between 0.27-1.2 V. Furthermore, analytical expressions for the rectifiers are verified against circuit simulation results, allowing a better understanding of their limitations.

Place, publisher, year, edition, pages
IEEE , 2015. 308-311 p.
Keyword [en]
energy harvesting, rectifier, low-voltage, piezo mems
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-123622DOI: 10.1109/ECCTD.2015.7300010ISI: 000380498200012ISBN: 9781479998760 (print)ISBN: 9781479998777 (print)OAI: oai:DiVA.org:liu-123622DiVA: diva2:890142
Conference
European Conference on Circuit Theory and Design (ECCTD), Trondheim, Norway, 24-26 Aug. 2015
Available from: 2015-12-30 Created: 2015-12-30 Last updated: 2016-09-25Bibliographically approved

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Nielsen Lönn, MartinHarikumar, PrakashWikner, JacobAlvandpour, Atila

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