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西北工业大学 电子信息学院, 陕西 西安 710072, E-mail:xyy021007@sina.com
收稿日期:2008-08-04,
修回日期:1900-01-02,
网络出版日期:2009-04-30,
纸质出版日期:2009-04-30
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谢永宜;刘诗斌;刘雨鑫. 高效自适应电荷泵研究与设计[J]. 液晶与显示, 2009,24(2): 217-220
XIE Yong-yi;LIU Shi-bin;LIU Yu-xin. Research and Design of Adaptive Charge Pump with High Efficiency[J]. 液晶与显示, 2009,24(2): 217-220
针对小型LCD的LED背光驱动芯片的电源效率问题
研究并设计了一种高效的1X/1.5X自适应电荷泵。采用结构简单而实用的PAM负反馈控制技术
使电荷泵输出电压得以稳定。分析了电荷泵相关性能
讨论了电路高效优化设计的措施。在0.6 m BiCMOS工艺模型下对电路进行了仿真
结果表明电荷泵能够实现1X/1.5X自适应模式变换功能
具有电源转化效率高(90.8%)和输出纹波低(67 mV)的特点。
For the display drivers of portable devices
power efficiency is a key problem. This paper researched a 1X/1.5X adaptive charge pump with high efficiency. Negative feedback loop based on PAM was used to keep a constant output voltage. Furthermore
to improve charge pumps performances
several optimized design techniques were introduced. The simulation results on the basis of 0.6 m BiCOMS technics model show: the proposed charge pump can work under 1X/1.5X mode adaptively and have an excellent performance with a higher power transform efficiency (90.8%) and lower output ripple (67 mV).
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