期刊
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
卷 18, 期 10, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0960-1317/18/10/104005
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In this paper, a fully CMOS integrated active AC/DC converter for energy harvesting applications is presented. The rectifier is realized in a standard 0.35 mu m CMOS process without special process options. It works as a full wave rectifier and can be separated into two stages-one passive and one active. The active part is powered from the storage capacitor and consumes about 600 nA at 2 V supply. The input voltage amplitude range is between 1.25 and 3.75 V, and the operating frequency range is from 1 Hz to as much as several 100 kHz. The series voltage drop over the rectifier is less than 20 mV. Measurements in combination with an electromagnetic harvester show a significant increase in the achievable output voltage and power compared to a common, discrete Schottky diode rectifier. The measured efficiency of the rectifier is over 95%. Measurements show a negligible temperature influence on the output voltage between -40 degrees C and + 125 degrees C.
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