P-55: A LCD supplied by high integrated dual-side dual-output switched-capacitor regulator with only two flying capacitors

Chun Jen Shih, Yu Huei Lee, Yang Ching Lin, Ming Yan Fan, Ke Horng Chen, Sheng Fa Liu, Pao Hsien Chiu, Sandy Chen, Chun Yu Shen, Ming Ta Hsieh, Huai An Li, Yean Kuo Luo, Wei Chou Hsu

Research output: Contribution to journalArticlepeer-review

Abstract

This paper presents a high integrated dual-side dual-output (DSDO) switched-capacitor (SC) regulator with only two flying capacitors. Generally, a dual-phase voltage doubler and an inverter are used to supply positive and negative voltage for TFTLCD gate drivers, respectively. Four flying capacitors, eight pinouts, and sixteen power switches are necessary for their operations in the driver integrated chip (IC). The proposed DSDO SC regulator combines both dual-phase voltage doubler and inverter converter into one channel through the use of time multiplexing technique at the cost of little performance degradation. As a result, it not only diminishes the number of flying capacitor from four to two but also removes four IC pinouts for low cost and compact size. Beside, sixteen necessary power switches are reduced to twelve for decreasing about 27% silicon area.

Original languageEnglish
Pages (from-to)1304-1307
Number of pages4
JournalDigest of Technical Papers - SID International Symposium
Volume42 1
DOIs
Publication statusPublished - 2011 Jun

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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