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P‐55: A LCD Supplied by High Integrated Dual‐Side Dual‐Output Switched‐Capacitor Regulator with Only Two Flying Capacitors
Author(s) -
Shih ChunJen,
Lee YuHuei,
Lin YangChing,
Fan MingYan,
Chen KeHorng,
Liu ShengFa,
Chiu PaoHsien,
Chen Sandy,
Shen ChunYu,
Hsieh MingTa,
Li HuaiAn,
Luo YeanKuo,
Hsu WeiChou
Publication year - 2011
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.3621077
Subject(s) - capacitor , switched capacitor , inverter , electrical engineering , dual (grammatical number) , decoupling capacitor , voltage , regulator , voltage doubler , power (physics) , voltage regulator , engineering , dropout voltage , physics , chemistry , art , biochemistry , literature , quantum mechanics , gene
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 TFT‐LCD gate drivers, respectively. Four flying capacitors, eight pin‐outs, 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 pin‐outs for low cost and compact size. Beside, sixteen necessary power switches are reduced to twelve for decreasing about 27% silicon area.