Operation of Ultra-Low Leakage Regulator Circuits with SOI and Bulk Technologies for Controlling Wireless Transceivers

Mamoru UGAJIN  Akihiro YAMAGISHI  Kenji SUZUKI  Mitsuru HARADA  

IEICE TRANSACTIONS on Electronics   Vol.E94-C   No.10   pp.1702-1705
Publication Date: 2011/10/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E94.C.1702
Print ISSN: 0916-8516
Type of Manuscript: BRIEF PAPER
Category: Electronic Circuits
power management,  power-switch,  energy harvesting,  CMOS,  

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To reduce power consumption of wireless terminals, we have developed ultra-low leakage regulator circuits that control the intermittent terminal operation with very small activity ratio. The regulator circuits supply about 100 mA in the active mode and cut the leakage current to a nanoampere level in the standby mode. The operation of the ultralow-leakage regulator circuits with CMOS/SOI and bulk technologies is described. The leakage-current reduction mechanism in a proposed power switch with bulk technology is explained. Measurement shows that the power switch using reversely biased bulk transistors has a leakage current that is almost as small as that of conventional CMOS/SOI transistor switches.