P-54: A single-inductor bipolar-output converter with power conservation mechanism (PCM) for driving cholesteric LCD

Kuan Yu Chu*, Yu Huei Lee, Ming Yan Fan, Ke-Horng Chen, Sheng Fa Liu, Pao Hsien Chiu, Sandy Chen, Chun Yu Shen, Ming Ta Hsieh, Huai An Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Cholesteric liquid-crystal display (Ch-LCD) has the bi-stable characteristic to achieve the energy-saving for the green technology. Backlight is even unnecessary in the Ch-LCD system. The single-inductor bipolar-output (SIBO) converter is one of best candidate to supply the power management function for the Ch- LCD with dual positive and negative output voltages by using a single inductor for a compact solution. The energy control methodology with the current-mode control and the power conservation mechanism (PCM) can strengthen the voltage quality to get high display quality. The test chip fabricated by 0.25 μm CMOS technology demonstrates the non-noticeable crossregulation at dual outputs with 90 % peak power conversion efficiency.

Original languageEnglish
Pages (from-to)1300-1303
Number of pages4
JournalDigest of Technical Papers - SID International Symposium
Volume42 1
DOIs
StatePublished - 1 Jun 2011

Keywords

  • Cholesteric liquid-crystal display (Ch-LCD)
  • Cross-regulation
  • Power conservation mechanism (PCM)
  • Singleinductor bipolar-output (SIBO) converter

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