Energy harvesting interface with improved impedance matching, method for operating the energy harvesting interface, and energy harvesting system using the energy harvesting interface

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United States of America Patent

PATENT NO 9541941
APP PUB NO 20150234416A1
SERIAL NO

14616119

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Abstract

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An energy harvesting interface receives an electrical signal from an inductive transducer and supplies a supply signal. The interface includes an input branch with a first switch and a second switch connected together in series between a first input terminal and an output terminal. The interface further includes a third switch and a fourth switch connected together in series between a second input terminal and the output terminal. A first electrical-signal-detecting device, coupled across the second switch, detects a first threshold value of an electric storage current in the inductor of the transducer. A second electrical-signal-detecting device, coupled across the fourth switch, detects whether the electric supply current that flows through the fourth switch reaches a second threshold value lower than the first threshold value. The second threshold is derived from the electric storage current.

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Patent Owner(s)

  • STMICROELECTRONICS S.R.L.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cattani, Alberto Cislago, IT 48 189
Gasparini, Alessandro Cusano Milanino, IT 53 283
Papotti, Federica San Giorgio di Mantova, IT 1 10
Ramorini, Stefano Arluno, IT 42 197

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