|
|
|
| Based on IW1696 LED Drive Power Supply |
| Fu Xiansong1,2, Zhu Shushuai2, 3, Niu Pingjuan2, 3 |
1. School of Electronics & Information Engineering Tianjin Polytechnic University Tianjin 300387 China
2. School of Electrical Engineering & Automation Tianjin Polytechnic University Tianjin 300387 China
3. Engineering Research Center of High Power Solid State Lighting Application System Ministry of Education, Tianjin Polytechnic University Tianjin 300387 China |
|
|
|
|
Abstract A 3W LED driving power supply that is built with the iW1696 is provided, in this paper. The LED driving power supply is a new low-cost digital control solution that maximizes the AC/DC flyback power supply efficiency. This intelligent digital approach achieves the combined benefits of high performance, low cost and high reliability in a single controller. An unique multiple PWM and PFM operational modes adaptively based on the power supply load changes is introduced. The multi-mode PWM/PFM control significantly improves the light-load efficiency and thus the overall average efficiency, and it does not bring compromise to other system performance.
|
|
Received: 13 May 2013
Published: 22 May 2014
|
|
|
|
|
|
[1] 马尼克塔拉(美)著, 王志强, 译. 精通开关电源设计[M]. 北京: 人民邮电出版社, 2008.
[2] 王雷.电源过电压保护探讨[J]. 低压电器. 2008（6）: 36-41. Wang Lei. Power over voltage protection[J]. Low- voltage Apparatus, 2008(6): 36-41.
[3] 钱振宇, 史建华. 开关电源的电磁兼容新设计、测试和典型案例[M]. 北京: 电子工业出版社, 2011.
[4] 路秋生. 可调光LED驱动AC/DC数字电源控制器iw3620[J]. 灯与照明. 2011(2): 29-37. Lu Qiusheng. Adjustable LED driver AC/DC digital power controller iw3620[J]. Light & Lighting. 2011(2): 29-37.
[5] IW1696AC/DC Digital Power Controller for Dimmable LED Dirver Data Sheet, (http://www. iwatt.com), 2009.
[6] Li Y, Zheng J. A Low-Cost Adaptive Multi-Mode Digital Control Solution Maximizing AC/DC Power Supply Efficiency[C]. IEEE 2010: 1-2.
[7] STAR E. Program Requirements for Single Voltage AC-DCand AC-AC Power Supplies. Eligibility Criteria (Version 2.0): 3-4.
[8] Kok E. Latest AC/DC integrated power IC for low standby medium power applications. 08 May 2009.
[9] Ishitobi M. Pulse width and pulse frequency modulation pattern controlled ZVS inverter type AC-DC power converter with lowered utility AC grid sideharmonic current components for magnetron drive. IEEE 2008, 4: 2062-2067.
[10] Zhou ZH M. Practical Technique of Switch Power Supply[M]. Beijing: The People’s Posts and Telecommunications Press, 2008. |
|
|
|
2013, Vol. 28 
