Design of LED Driver Power Based on LNK417EG
Journal Title: IOSR Journals (IOSR Journal of Electrical and Electronics Engineering) - Year 2017, Vol 12, Issue 1
Abstract
In recent years, people have been committed to the development and the design of new lighting sources. The life of LED lamps depends on the life of the LED driver which has a great relationship with the life of the electrolytic capacitor. In this paper the advantages of the drive power of the electrolytic capacitor are analyzed and the design of the PFC circuit and the transformer is described in details. On the basis of the LNK417 driver chip, a novel single-stage flyback drive circuit without the electrolytic capacitor is designed, which combines the power factor correction technology and constant current control to avoid the use of large electrolytic capacitors. The design and implementation of the control circuit are given and the overall performance is tested and analyzed in the article. The test results show that the driver is of high efficiency, high PF and long life etc. The efficiency is up to 85% and the PF value is not less than 0.9.
Authors and Affiliations
Fu Xiansong, Hao Changjie
Keywords
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- EP ID EP389081
- DOI 10.9790/1676-1201041622.
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