| TFT-LCD驱动芯片内置电源电路IP核设计 |
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| 引用本文： | 魏廷存,林彦君,高武,吕丽峰. TFT-LCD驱动芯片内置电源电路IP核设计[J]. 半导体学报, 2007, 28(5): 802-809 |
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| 作者姓名： | 魏廷存 林彦君 高武 吕丽峰 |
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| 作者单位： | 西北工业大学航空微电子中心,西安,710072 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，陕西省西安市科技计划，西北工业大学校科研和教改项目 |
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| 摘 要： | 设计了一种采用0.25μm CMOS低压/中压/高压混合电压工艺的TFT-LCD驱动芯片内置电源电路IP核.该IP模块包括低压降线性稳压电路、电荷泵升压/反压电路、VCOM驱动电路和VGOFF驱动电路等,能够提供驱动芯片的系统工作电压和TFT-LCD的驱动电压.所产生的电压值可实现编程控制,具有启动时间快、工作稳定和较低的温度系数等特点.仿真与测试结果表明,在上电200ms后能够生成稳定、正确的输出电压.电源电路模块的总静态功耗小于2mW.
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| 关 键 词： | TFT-LCD 驱动芯片 电源IP模块 LDO 电荷泵 |
| 收稿时间： | 2015-08-18 |
| 修稿时间： | 2006-12-18 |
Design of a Built-In Power Supply IP Core for TFT-LCD Driver IC |
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| Wei Tingcun, Lin Yanjun, Gao Wu, Lü Lifeng. Design of a Built-In Power Supply IP Core for TFT-LCD Driver IC[J]. Journal of Semiconductors, 2007, In Press. Wei T C, Lin Y J, Gao W, Lü L. Design of a Built-In Power Supply IP Core for TFT-LCD Driver IC[J]. Chin. J. Semicond., 2007, 28(5): 802.Export: BibTex EndNote |
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| Authors: | Wei Tingcun Lin Yanjun Gao Wu Lü Lifeng |
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| Affiliation: | Aviation Microelectronics Center,Northwestern Polytechnical University,Xi’an 710072,China;Aviation Microelectronics Center,Northwestern Polytechnical University,Xi’an 710072,China;Aviation Microelectronics Center,Northwestern Polytechnical University,Xi’an 710072,China;Aviation Microelectronics Center,Northwestern Polytechnical University,Xi’an 710072,China |
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| Abstract: | A build-in power supply circuits IP core for TFT-LCD driver IC is designed using 0.25μm CMOS LV/MV/HV hybrid voltage process.It is composed by four sub-blocks such as LDO regulators,capacitor-switched charge-pump circuits,VCOM and Vgoff driving buffer circuits.Both power supply voltages for TFT-LCD driver IC and driving voltages for TFT-LCD panel can be provided by this IP core.The temperature coefficients of voltages generated by LDO regulators are less than 13.7ppm/℃.A new topology of charge pump which generates the highest voltage VGH and the lowest voltage VGL is proposed,and the settling time of VGH and VGL is reduced to less than 100ms.The voltages generated by VCOM and Vgoff driving buffer circuits can be adjusted by programmable register.All generated voltages are with their stable values in 200ms when power is on.The static power dissipation of this IP core is less than 2mW. |
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| Keywords: | TFT-LCD driver IC power supply IP core LDO charge-pump |
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