Title :
AC Power Supply Circuits for Energy Harvesting
Author :
Wenck, Justin ; Amirtharajah, Rajeevan ; Collier, Jamie ; Siebert, Jeff
Abstract :
Passive energy harvesting from mechanical vibration has wide application in wearable and embedded sensors to complement or replace batteries. Energy harvesting efficiency can be increased by eliminating AC/DC conversion. A test chip demonstrating self-timing, power-on-reset circuitry, and memory for energy harvesting AC voltages has been designed in 180 nm CMOS and tested. Circuit operation is confirmed for supply frequencies between 60 Hz and 1 kHz with power consumption below 130 muW.
Keywords :
CMOS memory circuits; DRAM chips; logic design; power supply circuits; AC power supply circuits; AC-DC conversion; CMOS process; DRAM; circuit operation; embedded sensors; energy harvesting efficiency; frequency 60 Hz to 1 kHz; mechanical vibration; memory design; power consumption; power-on-reset circuitry; size 180 nm; test chip; wearable sensors; Automatic testing; Batteries; CMOS memory circuits; Circuit testing; Frequency; Mechanical sensors; Power supplies; Vibrations; Voltage; Wearable sensors; AC power supply; DRAM; energy harvesting; power-on-reset; self-timed;
Conference_Titel :
VLSI Circuits, 2007 IEEE Symposium on
Conference_Location :
Kyoto
Print_ISBN :
978-4-900784-05-5
Electronic_ISBN :
978-4-900784-05-5
DOI :
10.1109/VLSIC.2007.4342779
