ENERGY RECOVERY DRIVER FOR PZT ACTUATORS

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United States of America Patent

APP PUB NO 20240049604A1
SERIAL NO

18222180

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A differential piezoelectric actuator-system includes an inductor and driver-circuit having switches for transferring energy between first and second actuators and the inductor, and between a voltage-supply node and the inductor. Control circuitry determines whether a next phase in which to operate the driver-circuit is a first charging-phase or a first recovery-phase. The first charging-phase includes operating the switches in: a first sub-phase to transfer energy from the first actuator to the inductor; a second sub-phase to transfer energy from the voltage supply node to the inductor; and a third sub-phase to transfer energy from the inductor to the second actuator. The first recovery-phase includes operating the switches in: a first sub-phase to transfer energy from the first actuator to the inductor; a second sub-phase to transfer energy from the inductor to the voltage supply node; and a third sub-phase to transfer energy from the inductor to the second actuator.

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Patent Owner(s)

Patent OwnerAddress
STMICROELECTRONICS S R LVIA C OLIVETTI 2 AGRATE BRIANZA (MB) I-20041

International Classification(s)

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  • 2023 Application Filing Year
  • H02J Class
  • 4025 Applications Filed
  • 995 Patents Issued To-Date
  • 24.73 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances2023202420250255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
FURCERI, Raffaele Enrico Legnano, IT 5 0
GIANOLLO, Matteo Monza (MB), IT 2 0
LANGFELDER, Giacomo Milano, IT 21 32
ZAMPROGNO, Marco Cesano Maderno (MB), IT 48 236

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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges276015001 - 10020040060080010001200140016001800200022002400260028003000

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