Single-stage LED driver with low bus voltage

IF 0.7 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Electronics Letters Pub Date : 2013-03-01 DOI:10.1049/el.2012.4336

Yijie Wang, Yueshi Guan, Xiangjun Zhang, Dianguo Xu

引用次数: 23

Abstract

A single-stage driver is proposed. The LED driver is obtained by integrating an interleaved boost circuit and an LLC resonant converter. Since the interleaved circuit is adopted here, the input voltage is divided into two parts, each part sharing with one switch of the LLC resonant converter forms a boost circuit in discontinuous mode, and the power factor correction function and low bus voltage are realised. Since the LLC resonant converter is adopted, the converter works in soft switching state, which increases the efficiency of the system. A 100 W prototype is achieved to prove the analysis of the LED driver, and the efficiency of the LED driver is as high as 91% in full load.

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低母线电压单级LED驱动器

提出了一种单级驱动器。LED驱动器由交错升压电路和LLC谐振变换器集成而成。由于这里采用交错电路，输入电压被分成两部分，每一部分与LLC谐振变换器的一个开关共用，形成不连续模式的升压电路，实现了功率因数校正功能和低母线电压。由于采用LLC谐振变换器，变换器工作在软开关状态，提高了系统效率。实现了一个100w的样机来验证对LED驱动器的分析，LED驱动器在满载时的效率高达91%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Electronics Letters 工程技术-工程：电子与电气

CiteScore

2.70

自引率

0.00%

发文量

268

审稿时长

3.6 months

期刊介绍： Electronics Letters is an internationally renowned peer-reviewed rapid-communication journal that publishes short original research papers every two weeks. Its broad and interdisciplinary scope covers the latest developments in all electronic engineering related fields including communication, biomedical, optical and device technologies. Electronics Letters also provides further insight into some of the latest developments through special features and interviews. Scope As a journal at the forefront of its field, Electronics Letters publishes papers covering all themes of electronic and electrical engineering. The major themes of the journal are listed below. Antennas and Propagation Biomedical and Bioinspired Technologies, Signal Processing and Applications Control Engineering Electromagnetism: Theory, Materials and Devices Electronic Circuits and Systems Image, Video and Vision Processing and Applications Information, Computing and Communications Instrumentation and Measurement Microwave Technology Optical Communications Photonics and Opto-Electronics Power Electronics, Energy and Sustainability Radar, Sonar and Navigation Semiconductor Technology Signal Processing MIMO