Title :
A new hysteresis control buck converter with enhanced feedback ripple
Author :
Zhengguang Liu ; Jinbin Zhao ; Keqing Qu ; Fen Li ; Wei Cao
Author_Institution :
Coll. of Electr. Eng., Shanghai Univ. of Electr. Power, Shanghai, China
Abstract :
A new hysteretic control strategy with output capacitor equivalent series resistance (ESR) ripple compensation is presented. With such compensation, the effect of output capacitor ESR ripple voltage is enhanced. When step load change occurs, feedback of the output ripple adjusts the duty ratio promptly. In result, the proposed control scheme gains faster transient response speed and better steady state than traditional hysteresis without ripple compensation. The steady-state analysis of the control scheme is performed and the excellent performance of the new control strategy is verified by simulation.
Keywords :
feedback; power convertors; voltage control; control scheme; control strategy; duty ratio; enhanced feedback ripple; equivalent series resistance; hysteresis control buck converter; hysteretic control strategy; output capacitor ESR ripple voltage; ripple compensation; steady-state analysis; Capacitors; Equations; Hysteresis; Integrated circuit modeling; Steady-state; Transient response; Voltage control; Buck converter; equivalent series resistance (ESR); hysteretic control; ripple compensation;
Conference_Titel :
Electronics and Application Conference and Exposition (PEAC), 2014 International
Conference_Location :
Shanghai
DOI :
10.1109/PEAC.2014.7037991
