A 36V Ultrasonic Driver for Haptic Feedback Using Advanced Charge Recycling Achieving 0.20CV 2 f Power Consumption

ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference (ESSCIRC)（2021）

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摘要

This paper presents an energy efficient high voltage (HV) ultrasonic driver for ultrasonic haptic feedback, designed to drive Piezo electric micro machined transducers (PMUT). To achieve low power consumption while driving large capacitive load of a piezo electric micro machined transducer, advanced charge recycling (ACR) is presented reducing the reactive power consumption without off-chip supply...

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关键词

Reactive power,Transducers,Power demand,Loading,High-voltage techniques,Switches,Acoustics

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