A Sub-Threshold Passive Step-Up Rectifier for Vibration Energy Scavengers

This paper reports on the design and experimental verifications of a passive step-up rectifier for MEMS piezoelectric energy scavengers. The purpose of the proposed circuit is to improve system startup for vibration micro-generators without the need of an external source of energy. The design chosen is based on a voltage multiplier where conventional diodes are replaced by PMOS low-VT transistors. The circuit is produced in 1.8V 0.18μm UMC CMOS technology. Test and verifications were performed using a real piezo scavenger providing an AC voltage of 0 to 350mVpeak at a frequency of around 2.4 kHz. Up to 2V DC was measured at the output of the rectifier.


Editor(s):
Young-Ho, Cho
Published in:
Proceedings of the 11thWorkshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications, 1, 1, 38-41
Presented at:
PowerMEMS 2011, Seoul, Republic of Korea, November 15-18, 2011
Year:
2011
Publisher:
Daejeon, Republic of Korea, Cell Bench Research Center, KAIST
Keywords:
Laboratories:


Note: The status of this file is: EPFL only


 Record created 2011-12-25, last modified 2018-03-18

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