Title :
An Ultra Fast Fixed Frequency Buck Converter with Maximum Charging Current Control and Adaptive Delay Compensation for DVS Applications
Author :
Su, Feng ; Ki, Wing-Hung ; Tsui, Chi-ying
Author_Institution :
Hongkong Univ. of Sci. & Technol., Hong Kong
Abstract :
A buck converter with maximum charging current control in achieving high tracking speed is presented. An adaptive delay compensation scheme is employed to keep the switching frequency at 850 kHz within plusmn2.5% across the whole operation range. The integrated buck converter was fabricated using a 0.35 mum CMOS process and all functions are verified by extensive measurements.
Keywords :
CMOS integrated circuits; dynamic scheduling; electric current control; frequency convertors; switching convertors; CMOS process; DVS application; adaptive delay compensation; dynamic voltage scheduling; frequency 850 kHz; maximum charging current control; size 0.35 mum; switching frequency; ultrafast fixed frequency buck converter; Adaptive control; Buck converters; Current control; Delay; Frequency conversion; Inductors; Programmable control; Switching converters; Switching frequency; Voltage control;
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.2007.4342753
