Title :
SOI circuit technology for batteryless mobile system with green energy sources
Author :
Hama, N. ; Yajima, A. ; Yoshida, Y. ; Utsunomiya, F. ; Kodate, J. ; Tsukahara, T. ; Douseki, T.
Author_Institution :
Commun. Device R&D Dept., Seiko Epson Corp., Nagano, Japan
Abstract :
Energy-extracted circuit technology for green energy sources and ultralow-power SOI circuit technology with 1 mW level power dissipation provide self-powered operation of mobile equipment. A variable-stage switched-capacitor-type DC-DC converter scheme makes it possible to supply a constant voltage to LSIs for green energy sources. A 1-V 300 MHz-band voltage-controlled SAW oscillator circuit and a 0.5-V CPU fabricated with 0.35-/spl mu/m FD-SOI process are described. We verify the effectiveness of these circuits at self-powered wireless mobile system.
Keywords :
DC-DC power convertors; VLSI; low-power electronics; power integrated circuits; silicon-on-insulator; surface acoustic wave oscillators; switched capacitor networks; voltage-controlled oscillators; 0.35 micron; 0.5 V; 1 V; 1 mW; 300 MHz; DC-DC converter scheme; FD-SOI process; SOI circuit technology; batteryless mobile system; energy-extracted circuit technology; green energy sources; self-powered operation; self-powered wireless mobile system; variable-stage switched-capacitor type converter; voltage-controlled SAW oscillator circuit; DC-DC power converters; Power dissipation; Power generation; Power supplies; Solar power generation; Switched capacitor circuits; Switches; Switching circuits; Switching converters; Voltage;
Conference_Titel :
VLSI Circuits Digest of Technical Papers, 2002. Symposium on
Conference_Location :
Honolulu, HI, USA
Print_ISBN :
0-7803-7310-3
DOI :
10.1109/VLSIC.2002.1015105
