Research and Design of Adaptive Charge Pump with High Efficiency

XIE Yong-yi; LIU Shi-bin; LIU Yu-xin

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Research and Design of Adaptive Charge Pump with High Efficiency

Driving & Controlling | 更新时间：2020-08-12

- Research and Design of Adaptive Charge Pump with High Efficiency
- Chinese Journal of Liquid Crystals and Displays Vol. 24, Issue 2, Pages: 217-220(2009)
- 作者机构：
  
  西北工业大学电子信息学院, 陕西西安 710072, E-mail:xyy021007@sina.com
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN433;TN873+.3
- Received：04 August 2008，
  
  Revised：02 January 1900，
  
  Published Online：30 April 2009，
  
  Published：30 April 2009
- 稿件说明：
移动端阅览
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
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 DOI：

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 DOI：

摘要

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。

Abstract

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 pumps 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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Keywords

references

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. 吕丽峰,魏廷存,高武. TFT-LCD驱动芯片内置电荷泵的优化 [J]. 液晶与显示, 2007, 22(3):346-350.

. 王海峰,杨淑燕,张凤生.用于液晶显示器背光的LED驱动电路设计 [J]. 液晶与显示 , 2008, 23(4):442-447.

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