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A 1.7mm2 inductorless fully integrated flipping-capacitor rectifier (FCR) for piezoelectric energy harvesting with 483% power-extraction enhancement
Chen Z.3; Law M.-K.3; Mak P.-I.3; Ki W.-H.2; Martins R.P.3
2017-03-02
Source PublicationDigest of Technical Papers - IEEE International Solid-State Circuits Conference
Volume60
Pages372-373
AbstractEnergy Harvesting is crucial to the development of miniaturized implants to achieve minimal invasiveness and system autonomy. While RF wireless power transfer suffers from substantial tissue attenuation, a wireless piezoelectric energy harvester (PEH) is more attractive for deep-tissue implant applications [1]. Typical PEH interfaces with a full-bridge rectifier for AC-DC conversion with limited extractable electrical power due to the PEH inherent capacitance (Cp). The parallel-synchronized-switch harvesting-on-inductor (P-SSHI) technique [2, 3] can increase the output energy by flipping the PEH voltage using resonance, whereas other techniques in [4] and [5] focus on boosting the PEH voltage swing to increase the extracted power. Yet, all of them require a bulky external high-Q inductor (up to the mH range in [3] and [5]) to ensure a high power-extraction enhancement. This work reports an inductorless fully integrated PEH interface, achieving a high voltage flipping efficiency (η) of 0.85 and a maximum output-power increasing rate (MOPIR) of 4.83× when compared with a full-bridge rectifier interface.
DOI10.1109/ISSCC.2017.7870416
URLView the original
Language英語English
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Document TypeConference paper
CollectionUniversity of Macau
Affiliation1.Instituto Superior Técnico
2.Hong Kong University of Science and Technology
3.Universidade de Macau
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Chen Z.,Law M.-K.,Mak P.-I.,et al. A 1.7mm2 inductorless fully integrated flipping-capacitor rectifier (FCR) for piezoelectric energy harvesting with 483% power-extraction enhancement[C],2017:372-373.
APA Chen Z.,Law M.-K.,Mak P.-I.,Ki W.-H.,&Martins R.P..(2017).A 1.7mm2 inductorless fully integrated flipping-capacitor rectifier (FCR) for piezoelectric energy harvesting with 483% power-extraction enhancement.Digest of Technical Papers - IEEE International Solid-State Circuits Conference,60,372-373.
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