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Proceedings Paper

A nano-power energy harvesting IC for arrays of piezoelectric transducers
Author(s): M. Dini; M. Filippi; A. Romani; V. Bottarel; G. Ricotti; M. Tartagni
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Paper 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%.

Paper Details

Date Published: 17 May 2013
PDF: 8 pages
Proc. SPIE 8763, Smart Sensors, Actuators, and MEMS VI, 87631O (17 May 2013); doi: 10.1117/12.2017406
Show Author Affiliations
M. Dini, Univ. of Bologna (Italy)
M. Filippi, Univ. of Bologna (Italy)
A. Romani, Univ. of Bologna (Italy)
V. Bottarel, STMicroelectronics (Italy)
G. Ricotti, STMicroelectronics (Italy)
M. Tartagni, Univ. of Bologna (Italy)

Published in SPIE Proceedings Vol. 8763:
Smart Sensors, Actuators, and MEMS VI
Ulrich Schmid; José Luis Sánchez de Rojas Aldavero; Monika Leester-Schaedel, Editor(s)

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