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该论文提出了一种简单的LED灯驱动IC，集成了智能功率因数校正功能，旨在解决传统LED驱动中功率因数低和效率低的问题。通过创新的电路设计，实现了低成本、高性能的LED照明解决方案。
lighting devices [1, 2] and LCD backlight devices [3]. Prior to emergence of highperformance LED devices, the fluorescent lamps have been in a strong position in lighting systems as compared to the incandescent lamps since they have a better efficiency [4]. However, LED dramatically improves the performance in both life time and efficiency. In addition, LED is gaining popularity as a green solution. If the manufacturing cost issue is going to resolve in near future, widespread use of LED lighting is being expected. Therefore, LED related products will be placed in a very important position and the market requires effective driving solutions. A step-down buck converter is one of the widely used topologies in off-the-shelf LED lamp drivers owing to its simplicity of use. However, the conventional buck
Jong Tae Hwang, Kunhee Cho, Donghwan Kim, Minho Jung,
Gyehyun Cho, Seunguk Yang Fairchild Semiconductor, Bucheon, Korea High-brightness and high-efficiency LED technology has opened a new era in