DMCA
HIGHLY EFFICIENT CMOS INTEGRATED INTERFACE CIRCUIT FOR HIGH VOLTAGE PIEZOELECTRIC GENERATORS
BibTeX
@MISC{Hehn_highlyefficient,
author = {Thorsten Hehn and Yiannos Manoli},
title = {HIGHLY EFFICIENT CMOS INTEGRATED INTERFACE CIRCUIT FOR HIGH VOLTAGE PIEZOELECTRIC GENERATORS},
year = {}
}
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Abstract
Abstract: This work presents a CMOS integrated interface circuit (IIC) enabling highly efficient energy transfer from piezoelectric generators (PGs) to a storage element, e.g. a large capacitor. Due to the low power consumption of 4.7 µW assuming a supply voltage of 2.5 V, the IIC can be supplied totally by the storage capacitor. The storage capacitor can be passively charged via a bypassing circuit if its voltage is not sufficient to supply the control circuit. PG voltage amplitudes of up to 18 V are tolerated by using special high voltage transistors. Using an improved switching technique, simulations suggest an efficiency gain of about 8 % compared to a formerly-used switching technique, resulting in an efficiency between 80 % and 90 % for PG voltage amplitudes higher than 6 V.
