Title :
Single-chip quasi-PWM DC-DC converter with fast transient response comprising loop-bandwidth control
Author :
Hong, Y.U. ; Jung, S.H. ; Woo, Y.J. ; Choi, B.K. ; Cho, G.-H.
Author_Institution :
Div. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea
fDate :
4/14/2005 12:00:00 AM
Abstract :
A single-chip fast-transient-responding DC-DC converter employing new control methods is proposed. The proposed quasi-PWM control provides the advantages of both accurate PWM control and fast hysteresis control. In addition, automatic loop-bandwidth (ALB) control is used for the output voltage to return to its original value quickly when an abrupt transition occurs at line voltage or load current. The ALB controlled quasi-PWM boost converter chip is implemented using standard 0.35 μm CMOS process, and the test results are shown.
Keywords :
CMOS integrated circuits; DC-DC power convertors; PWM power convertors; hysteresis; 0.35 micron; CMOS process; automatic loop-bandwidth control; boost converter chip; fast transient response; hysteresis control; quasi-PWM control; single-chip quasi-PWM DC-DC converter;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20058183
