A Single-Stage LED Driver Based on SEPIC and LLC Circuits

被引：50

作者：

Wang, Yijie ^{[1
]}

Qi, Na ^{[1
]}

Guan, Yueshi ^{[1
]}

Cecati, Carlo ^{[1
]}

Xu, Dianguo ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Elect Engn & Automat, Harbin 150001, Peoples R China

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2017年 / 64卷 / 07期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Lighting; LLC; power factor correction (PFC); single-ended primary-inductor converter (SEPIC); soft switching; ELECTRONIC BALLAST; DESIGN; CONVERTER;

D O I：

10.1109/TIE.2016.2613921

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

A single-stage light-emitting diode (LED) driver has been developed integrating a single-ended primary-inductor converter with a half-bridge LLC resonant converter. The proposed topology reduces system's cost, enhancing reliability. Because the LLC resonant part maintains soft-switching characteristics, switching losses are relatively low. Due to careful parameters selection, the system bus voltage can be kept low as needed in high-power LED drive designs. Some experiments using a 100-W prototype were performed to validate theoretical analysis. The obtained power factor was as high as 0.99, and due to soft-switching operations efficiency was up to 92% at full load.

引用

页码：5766 / 5776

页数：11

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