Transformer Coupled Recycle Snubber for High-Efficiency Offline Isolated LED Driver With On-Chip Primary-Side Power Regulation

被引：23

作者：

Jung, Seungchul ^{[1
]}

Cho, Gyu-Hyeong ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Elect Engn, Taejon 305701, South Korea

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2014年 / 61卷 / 12期

关键词：

AC-to-DC converter; flyback turn-off snubber; LED driver; passive lossless snubber; primary-side power regulation; FLYBACK; VOLTAGE; SCHEME;

D O I：

10.1109/TIE.2014.2316221

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper presents a high-efficiency offline isolated LED driver based on a flyback converter. In order to achieve high power conversion efficiency as well as a low-cost design, a simple passive lossless turn-off snubber is proposed to reduce the switching loss of the power switch. A primary-side power regulation scheme is also proposed to compensate for forward voltage variation and aging caused by process and temperature variations. The proposed control scheme is designed and fabricated on-chip using a 0.35-mu m BCDMOS process. Test results of the proposed LED driver show an efficiency level that exceeds 83% (up to 90%) in an output range of 5-10W with an input range of 85-265 V-AC

引用

页码：6710 / 6719

页数：10

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