DocumentCode
630008
Title
A ripple voltage sensing MPPT circuit for ultra-low power microsystems
Author
Inhee Lee ; Suyoung Bang ; Dongmin Yoon ; Myungjoon Choi ; Seokhyeon Jeong ; Sylvester, Dennis ; Blaauw, D.
Author_Institution
Univ. of Michigan, Ann Arbor, MI, USA
fYear
2013
fDate
12-14 June 2013
Abstract
We propose a maximum power point tracking (MPPT) circuit for micro-scale sensor systems that measures ripple voltages in a switched capacitor energy harvester. Compared to conventional current mirror type MPPT circuits, this design incurs no voltage drop and does not require high bandwidth amplifiers. Using correlated double sampling, high accuracy is achieved with a power overhead of 5%, even at low harvested currents of 1.4uA based on measured results in 180nm CMOS.
Keywords
CMOS integrated circuits; amplifiers; energy harvesting; maximum power point trackers; micromechanical devices; switched capacitor networks; CMOS; MPPT circuit; high bandwidth amplifiers; maximum power point tracking; ripple voltage sensing; switched capacitor energy harvester; ultra-low power microsystems; Batteries; Capacitors; Logic gates; Maximum power point trackers; Monitoring; Switches; Voltage measurement;
fLanguage
English
Publisher
ieee
Conference_Titel
VLSI Circuits (VLSIC), 2013 Symposium on
Conference_Location
Kyoto
Print_ISBN
978-1-4673-5531-5
Type
conf
Filename
6578673
Link To Document