Self-Oscillating LED Driver With Bus Voltage Regulation

被引：0

作者：

Kohler, Samuel Valerio ^{[1
]}

Vargas, Diogo Ribeiro ^{[1
]}

Denardin, Gustavo Weber ^{[1
]}

Lopes, Juliano de Pelegrini ^{[1
]}

机构：

[1] Fed Univ Technol Parana UTFPR, Pato Branco, Parana, Brazil

来源：

2018 13TH IEEE INTERNATIONAL CONFERENCE ON INDUSTRY APPLICATIONS (INDUSCON) | 2018年

关键词：

Half-Bridge; LED Driver; Self-Oscillating Command; SEPIC Converter; Voltage Regulation;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper proposes a two stage LED driver topology with bus voltage regulation and self-oscillating command circuit. The first stage, responsible for the power factor correction, is composed of a SEPIC converter operating in the discontinuous conduction mode of current. The second stage, responsible for supply the LEDs consists of a half-bridge inverter with a LC resonant filter. It is used a voltage regulation circuit to compensate an input voltage variation of 86 to 105% of the nominal value, keeping the bus voltage almost constant. In this way, the switching frequency is kept stable as well as the output current. A laboratory prototype with a rated power of 26 W was built in order to show the feasibility of the idea.

引用

页码：495 / 501

页数：7

共 15 条

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