Off-the-Line Primary-Side Regulation LED Lamp Driver with Single-Stage PFC and TRIAC Dimming Using LED Forward-Voltage and Duty-Variation Tracking Control

📋 论文概要

该论文提出了一种离线式初级侧调节（PSR）LED灯驱动器，集成了单级功率因数校正（PFC）和TRIAC调光功能。通过利用LED正向电压进行调节，无需次级侧感应电路和光耦隔离器，简化了设计并降低了成本。

💡 主要创新点

• 首次在单级PSR flyback架构中实现TRIAC调光，通过检测LED正向电压实现调光控制，无需额外反馈电路。
• 采用单级PFC与PSR结合，同时满足高功率因数和隔离要求，适用于低压LED灯替换应用。
• 通过优化控制算法，在宽输入电压和调光范围内保持稳定输出，提高了系统可靠性。

🏷 关键词

📄 原文摘要

terms of efficiency and lower fabrication cost. However, some areas such as bar-typed fluorescent lamp retrofit applications still require a solution with isolation. Even for replacement of the incandescent and compact fluorescent lamps, some LED lamp makers prefer isolated driver solutions due to safety issues. One of the popular solutions is the flyback converter which is widely used in low-to-moderate power applications [2]. However, generally, it requires secondary voltage or current-sense circuit, and opto-coupler isolator to form a feedback loop. Thus, primary-side regulation (PSR) flyback converters have been steadily used in LED applications since they do not need secondary circuits and isolator [3]. This paper introduces a PSR method for LED lamp which satisfies low price, good

👥 作者与机构

Jong Tae Hwang, Moon Sang Jung, Dae Ho Kim, Jun Hong Lee,

Min Ho Jung, Jong Ha Shin Anaperior Technology, Seoul, Korea Non-isolation LED drivers [1] are more attractive than isolated drivers in