| 一种高效率白光LED驱动器的设计 | |
| 张赛 ; 李冬梅 ; ZHANG Sai ; LI Dong-mei | |
| 2010-06-09 ; 2010-06-09 | |
| 关键词 | 白光LED LED驱动器 升压型DC/DC转换器 脉冲频率调制 White LED LED driver Boost DC/DC converter Pulse frequency modulation TN312.8 |
| 其他题名 | Design of High-Efficiency White-LED Driver |
| 中文摘要 | 小功率白色LED是便携式电子产品中LCD背光照明的最佳选择,其驱动器可以看作是向LED供电的特殊电源。介绍了一种高效率PFM升压型DC/DC转换器的设计。该转换器可带30 mA负载,输入电平0.8~3 V,输出1.9~3.9 V,无需外接用于启动的肖特基二极管,可在1.2V电压启动;重点对基准电压和振荡器的设计进行分析,采用0.6μm CMOS工艺完成芯片的设计。负载为20 mA时,芯片的工作效率大于80%,电压精度≤±2%,有较大的实用价值。; Low power white LED is the best choice for LCD's backlight in portable electronic products.Its driver can be regarded as a special power supply.Design of a high-efficiency PFM boost DC/DC converter is presented,which is capable of sourcing an output current up to 30 mA,with an input range from 0.8 V to 3 V and an output range from 1.9 V to 3.9 V.With external inductor and capacitor,it can start-up at 1.2 V without an external Schottky diode.Circuits of voltage reference and oscillator are analyzed in particular.Designed and simulated using 0.6 μm CMOS process,the device has achieved an efficiency greater than 80% when loading 20 mA and voltage precision better than ±2%,and the time to stabilize output voltage is 1.813 ms. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/56867]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 张赛,李冬梅,ZHANG Sai,等. 一种高效率白光LED驱动器的设计[J],2010, 2010. |
| APA | 张赛,李冬梅,ZHANG Sai,&LI Dong-mei.(2010).一种高效率白光LED驱动器的设计.. |
| MLA | 张赛,et al."一种高效率白光LED驱动器的设计".(2010). |
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