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

fYear

2011

fDate

19-21 Sept. 2011

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Custom Integrated Circuits Conference (CICC), 2011 IEEE

Conference_Location

San Jose, CA

ISSN

0886-5930

Print_ISBN

978-1-4577-0222-8

Type

conf

DOI

10.1109/CICC.2011.6055341

Filename

6055341