Title :
A fully-integrated switched-capacitor 2∶1 voltage converter with regulation capability and 90% efficiency at 2.3A/mm2
Author :
Chang, Leland ; Montoye, Robert K. ; Ji, Brian L. ; Weger, Alan J. ; Stawiasz, Kevin G. ; Dennard, Robert H.
Author_Institution :
IBM T. J. Watson Res. Center, Yorktown Heights, NY, USA
Abstract :
A switched-capacitor DC-DC voltage converter in 45 nm SOI CMOS leverages on-chip trench capacitors to achieve 90% efficiency at an output of 2.3A/mm2 for 2 V-to-0.95 V conversion at 100 MHz. Operation in step-up and step-down modes is demonstrated. Combined with stacked voltage domains, self-regulation capability enables further efficiency improvement.
Keywords :
CMOS integrated circuits; DC-DC power convertors; switched capacitor networks; SOI CMOS; efficiency 90 percent; frequency 100 MHz; full-integrated switched-capacitor 2:1 voltage converter; on-chip trench capacitors; size 45 nm; stacked voltage domains; step-down modes; step-up modes; switched-capacitor DC-DC voltage converter; voltage 2 V to 0.95 V; Capacitors; Clocks; Switches; Switching circuits; System-on-a-chip; Voltage control; Voltage measurement;
Conference_Titel :
VLSI Circuits (VLSIC), 2010 IEEE Symposium on
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-5454-9
DOI :
10.1109/VLSIC.2010.5560267
