This paper describes a multi-source energy harvester IC for arrays of independent transducers, designed in a 0.32um 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 converter is fully autonomous and suitable for battery-less operation. The circuit area is 4.6 mm^2 and has a power consumption of 175 nW/source at 2.5 V while efficiency ranges between 70% and over than 85%.
A nano-power energy harvesting IC for arrays of piezoelectric transducers / M. Dini; M. Filippi; A. Romani; V. Bottarel; G. Ricotti; M. Tartagni. - ELETTRONICO. - 8763:(2013), pp. 87631O-1-87631O-8. (Intervento presentato al convegno SPIE Microtechnologies tenutosi a Grenoble nel 24-26 Aprile 2013) [10.1117/12.2017406].
A nano-power energy harvesting IC for arrays of piezoelectric transducers
DINI, MICHELE;ROMANI, ALDO;TARTAGNI, MARCO
2013
Abstract
This paper describes a multi-source energy harvester IC for arrays of independent transducers, designed in a 0.32um 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 converter is fully autonomous and suitable for battery-less operation. The circuit area is 4.6 mm^2 and has a power consumption of 175 nW/source at 2.5 V while efficiency ranges between 70% and over than 85%.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
