| 脉宽调制型大功率LED恒流驱动芯片的研究 |
| |
| 引用本文： | 沈慧,郭维,朱大中. 脉宽调制型大功率LED恒流驱动芯片的研究[J]. 固体电子学研究与进展, 2006, 26(3): 359-363 |
| |
| 作者姓名： | 沈慧 郭维 朱大中 |
| |
| 作者单位： | 浙江大学信息与电子工程学系,微电子技术与系统设计研究所,杭州,310027;浙江大学信息与电子工程学系,微电子技术与系统设计研究所,杭州,310027;浙江大学信息与电子工程学系,微电子技术与系统设计研究所,杭州,310027 |
| |
| 基金项目： | 浙江省教育厅资助项目 , 浙江大学校科研和教改项目 |
| |
| 摘 要： | 基于0.6μm5V标准CMOS工艺,研究并设计了一种脉宽调制型大功率照明LED恒流驱动芯片为1W大功率照明LED灯提供350mA恒定的平均驱动电流。实现了在5V电源电压有10%跳变时,平均驱动电流的变化可被控制在4.5%以内。输出级开关MOS管采用高密度的版图结构使单位面积的有效宽长比与普通结构的MOS管相比提高了一倍。芯片的电源效率可达87%,与以前设计的串联饱和型半导体照明LED恒流驱动芯片[1]相比提高近25%。
|
| 关 键 词： | 互补金属氧化物半导体集成电路 照明发光二极管 脉宽调制型 恒流驱动 电源效率 |
| 文章编号： | 1000-3819(2006)03-359-05 |
| 收稿时间： | 2005-11-11 |
| 修稿时间： | 2006-01-09 |
Pulse Width Modulated Constant Current Driving IC for 1W Power LED |
| |
| SHEN Hui,GUO Wei,ZHU Dazhong. Pulse Width Modulated Constant Current Driving IC for 1W Power LED[J]. Research & Progress of Solid State Electronics, 2006, 26(3): 359-363 |
| |
| Authors: | SHEN Hui GUO Wei ZHU Dazhong |
| |
| Affiliation: | Department of Information Science and Electronics Engineering Zhejiang University, Hangzhou, 310027, CHN |
| |
| Abstract: | A pulse width modulated(PWM) constant current driving chip is designed based on CSMC 0.6 μm 5 V standard CMOS process to supply a 1 W power LED lamp with constant average current of 350 mA in despite of changes in power supply. Test results have shown that the variance of average driving current can be controlled within range of 4.5% when power supply changes by 10%. Effective W/L density of MOS switch in the output stage is doubled compared with normal MOS structure using high W/L density structure. Efficiency of 87% is readily achievable with improvement of nearly 25% compared with the formerly designed DC mode constant current driving chip~ [1] . |
| |
| Keywords: | CMOS IC power LED pulse width modulation constant-current driving power efficiency |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
