A Nanopower Synchronous Charge Extractor IC for Low-Voltage Piezoelectric Energy Harvesting With Residual Charge Inversion
| Autor: | Aldo Romani, Matteo Filippi, Marco Tartagni, Michele Dini |
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| Přispěvatelé: | Michele Dini, Aldo Romani, Matteo Filippi, Marco Tartagni |
| Rok vydání: | 2016 |
| Předmět: |
Engineering
SYNCHRONOUS CHARGE EXTRACTION business.industry CMOS 020208 electrical & electronic engineering Electrical engineering Biasing 02 engineering and technology 021001 nanoscience & nanotechnology Capacitance Electric charge Energy storage Transducer ENERGY HARVESTING INTEGRATED CIRCUITS 0202 electrical engineering electronic engineering information engineering POWER CONVERSION PIEZOELECTRIC TRANSDUCERS Electrical and Electronic Engineering 0210 nano-technology business Energy harvesting Low voltage nano-power circuit |
| Zdroj: | IEEE Transactions on Power Electronics. 31:1263-1274 |
| ISSN: | 1941-0107 0885-8993 |
| Popis: | The paper presents a power converter for piezoelectric energy harvesting implementing a modified version of a synchronous electrical charge extraction with quiescent current as low as 160 nA. The input energy is increased of more than 200% for weak vibrations, by inverting the residual charge left on the capacitance of the transducer after each energy extraction. Moreover, a power management policy, named two-way energy storage, is introduced in order to improve significantly the efficiency of the energy harvesting system in battery-less systems during the startup phase, when the energy storage is fully depleted. The converter behaves as a buck–boost converter, and the measured peak efficiency is 85.3%. The IC has been designed in a 0.32-μm microelectronic technology from STMicroelectronics in an active area of 0.95 mm2. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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