Efficient Hybrid Buck Converter for Visible Light Communication in LED Drivers

被引：5

作者：

Loose, Felipe ^{[1
]}

Teixeira, Lucas ^{[1
]}

Brum, Joao Paulo ^{[1
]}

Barriquello, Carlos H. ^{[1
]}

Reguera, Vitalio A. ^{[1
]}

Alonso, J. Marcos ^{[2
]}

Dalla Costa, Marco A. ^{[1
]}

机构：

[1] Univ Fed Santa Maria, Dept Elect Engn, BR-97105900 Santa Maria, RS, Brazil

[2] Univ Oviedo, Elect Engn Dept, Gijon 33204, Spain

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2022年 / 69卷 / 02期

关键词：

Light emitting diodes; Visible light communication; Lighting; Switched mode power supplies; Load modeling; Bandwidth; Topology; High efficiency; high frequency; LED drivers; linear power amplifier (LPA); switched-mode power supply (SMPS); visible light communication (VLC); wide communication bandwidth; POWER CONVERTER;

D O I：

10.1109/TIE.2021.3060651

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 article presents an LED driver for lighting and visible light communication (VLC), which utilizes the light of the LEDs to wirelessly transmit data by modulating their instantaneous current. The solution proposed in this article seeks to unite the high efficiency of switched-mode power supplies with the wide bandwidth of linear power amplifiers (LPAs) to achieve high-speed communications. The hybrid converter processes the energy from a 48-V dc bus with an efficiency of 94% while supplying a 20-W LED load, and providing 3.68 MHz of bandwidth for VLC. Details regarding frequency limitations are provided in terms of a Laplace model. The impact of the LPA on the overall efficiency is mitigated by adopting specific design constraints. Finally, experimental results are shown from a prototype working with signals aimed at multicarrier multilevel modulations based on orthogonal frequency division multiplexing.

引用

页码：1877 / 1887

页数：11

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