Title :
Adaptive Hysteresis Window Control (AHWC) Technique for Hysteretic DC-DC BUCK Converter with Constant Switching Frequency
Author :
Wu, Xiaohui ; Wu, Xiaobo
Author_Institution :
Inst. of VLSI Design, Zhejiang Univ., Hangzhou, China
Abstract :
This paper presents a new adaptive hysteresis window control (AHWC) technique for hysteretic DC-DC buck converter, which can adaptively adjust the hysteresis window according to input and output voltages to keep the switching frequency constant. This technique was designed and fabricated in TSMC 0.35 ¿m standard CMOS process. Simulation results showed that by using the proposed AHWC technique, the fast line and load transient responses as well as the constant switching frequency were achieved, as input and output voltages varied.
Keywords :
CMOS analogue integrated circuits; DC-DC power convertors; adaptive control; hysteresis; switching convertors; adaptive hysteresis window control; constant switching frequency; hysteretic DC-DC buck converter; size 0.35 mum; standard CMOS process; Adaptive control; Buck converters; Capacitors; Hysteresis; Paramagnetic resonance; Programmable control; Switching converters; Switching frequency; Very large scale integration; Voltage control;
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2010 Asia-Pacific
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-4812-8
Electronic_ISBN :
978-1-4244-4813-5
DOI :
10.1109/APPEEC.2010.5448511
