| Charge Pump for LCD Driver Used in Cell Phone |
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| 作者姓名： | 郁海蓉 陈志良 |
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| 作者单位： | YU Hairong，CHEN Zhiliang Institute of Microelectronics，Tsinghua University，Beijing 100084，China |
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| 摘 要： | IntroductionDue to the fast growth of the mobilecommunication market,the competition in thisbusiness is very intense.The display still remainsas one of the most importantparts requiring driverICs with better performance and lower cost.Sincethe DC- DC converter is one of the most importantcomponents for achieving the requirement,thispaper aims at designing a sophisticated voltageconverter. The most important advantage of charge pumpsas a voltage converter is their high efficiency andamenabi…
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Charge Pump for LCD Driver Used in Cell Phone |
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| YU Hairong,CHEN Zhiliang Institute of Microelectronics,Tsinghua University,Beijing ,China.Charge Pump for LCD Driver Used in Cell Phone[J].Tsinghua Science and Technology,2002,7(5). |
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| Authors: | YU Hairong CHEN Zhiliang Institute of Microelectronics Tsinghua University Beijing China |
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| Institution: | YU Hairong,CHEN Zhiliang Institute of Microelectronics,Tsinghua University,Beijing 100084,China |
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| Abstract: | A charge pump design is presented to operate at 10 kHz with 100 μA in a liquid crystal display (LCD) driver for cell phone. Optimal channel widths are designed by estimating the power consumption of the Fibonacci-like charge pump. An optimal frequency is a compromise between the rise time and the dynamic power dissipation. The optimization of the two-phase nonoverlapping clock generator circuit improves the efficiency. Simulation results based on 1.2 μm complementary metal-oxide-semiconductor (CMOS) technology parameters verify the efficiency of the design. |
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| Keywords: | DC-DC converter charge pump circuit liquid crystal display driver |
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