A nano-power energy harvesting IC for arrays of piezoelectric transducers

M. Dini; M. Filippi; A. Romani; V. Bottarel; G. Ricotti; M. Tartagni

doi:10.1117/12.2017406

17 May 2013 A nano-power energy harvesting IC for arrays of piezoelectric transducers

M. Dini, M. Filippi, A. Romani, V. Bottarel, G. Ricotti, M. Tartagni

Proceedings Volume 8763, Smart Sensors, Actuators, and MEMS VI; 87631O (2013) https://doi.org/10.1117/12.2017406
Event: SPIE Microtechnologies, 2013, Grenoble, France

Abstract

This paper describes a multi-source energy harvester IC for arrays of independent transducers, designed in a 0.32μm STMicroelectronics BCD technology, that can manage up to 5 AC-DC channels (e.g. piezoelectric transducers). The IC implements a boost converter based on synchronous electrical charge extraction. A single external inductor is time-shared among all transducers and access conflicts are handled by an arbiter circuit implemented as an asynchronous FSM. The designed converter is fully autonomous and suitable for battery-less operation. The circuit area is 4.6 mm² and has a power consumption of 175 nW/source at 2.5 V while efficiency ranges between 70% and over than 85%.

Citation Download Citation

M. Dini, M. Filippi, A. Romani, V. Bottarel, G. Ricotti, and M. Tartagni "A nano-power energy harvesting IC for arrays of piezoelectric transducers", Proc. SPIE 8763, Smart Sensors, Actuators, and MEMS VI, 87631O (17 May 2013); https://doi.org/10.1117/12.2017406

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