Title :
A near-zero cross-regulation single-inductor bipolar-output (SIBO) converter with an active-energy-correlation control for driving cholesteric-LCD
Author :
Lee, Yu-Huei ; Fan, Ming-Yan ; Chen, Wei-Chung ; Chen, Ke-Horng ; Liu, Sheng-Fa ; Chiu, Pao-Hsien ; Chen, S. ; Shen, Chun-Yu ; Hsieh, Ming-Ta ; Li, Huai-An
Author_Institution :
Inst. of Electr. Control Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
A near-zero cross-regulation (near-zero CR) single-inductor bipolar-output (SIBO) converter with an adaptive-energy correlation (AEC) control is proposed as a compact power management solution for driving cholesteric-LCD (Ch-LCD). The SIBO converter can provide a pair of positive and negative output voltages with only one external inductor for achieving the polarity reversion operation in Ch-LCD to obtain high-quality displays. The proposed AEC control decides energy distribution for bipolar outputs without any cross regulation through the embedded prediction function. The chip fabricated in a 0.25 μm CMOS process demonstrates near-zero cross-regulation at bipolar outputs with 90% peak power conversion efficiency.
Keywords :
CMOS integrated circuits; cholesteric liquid crystals; driver circuits; inductors; liquid crystal displays; CMOS process; SIBO; active energy correlation control; adaptive energy correlation control; cholesteric LCD driver; near zero cross regulation single inductor bipolar output converter; polarity reversion operation; size 0.25 mum; Correlation; Inductors; Load management; Pulse width modulation; Sensors; Switches; Transient response;
Conference_Titel :
Custom Integrated Circuits Conference (CICC), 2011 IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4577-0222-8
DOI :
10.1109/CICC.2011.6055341
