An Autonomous Piezoelectric Energy Harvesting IC Based on a Synchronous Multi-Shot Technique
| Autor: | Jean-Jacques Chaillout, Ghislain Despesse, Jerome Willemin, Sébastien Boisseau, P. Gasnier, Guillaume Gouvernet, C. Condemine |
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| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | IEEE Journal of Solid-State Circuits. 49:1561-1570 |
| ISSN: | 1558-173X 0018-9200 |
| DOI: | 10.1109/jssc.2014.2325555 |
| Popis: | This paper presents a fully autonomous integrated circuit (IC) dedicated to piezoelectric harvesters. The novel Multi-Shot Synchronous Electric Charge Extraction (MS-SECE) performed by the IC optimizes the energy transfer from a highly charged piezoelectric harvester to a low voltage storage element. The system deals with piezoelectric powers in the 10 µW to 1 mW range and handles very high piezoelectric voltage values ( $>$ 100 V) thanks to the off-chip components around the IC. The IC has been fabricated in AMS 0.35 µm 3.3 V technology and its low power consumption (1 µW @ 5 Hz) is particularly suitable for low frequency harvesters. MS-SECE increases the extracted power compared to the Maximum Power Point Tracking (MPPT) technique but it also improves the efficiency by up to 25% compared to standard SECE. Furthermore, MS-SECE allows the use of small off-chip components: an efficiency of 61% has been reached with a 125 mm 3 coupled-inductor. Finally, the proposed power management circuit self-starts, works without any battery and its overall volume is expected to be less than 1 cm 3 . |
| Databáze: | OpenAIRE |
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