Series/parallel boost/buck dc/dc converter as a visible light communication hb-led driver based on split power †
This paper presents a high-brightness LED (HB-LED) driver for visible light communication (VLC) based on two converters. The first is a high-frequency buck DC/DC converter and the second is a low-frequency boost DC/DC converter, connected in series with respect to the LEDloadandconnectedinparallelat...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad de Oviedo (UNIOVI) |
| Repositorio: | RUO. Repositorio Institucional de la Universidad de Oviedo |
| Idioma: | inglés |
| OAI Identifier: | oai:digibuo.uniovi.es:10651/81210 |
| Acceso en línea: | https://hdl.handle.net/10651/81210 https://dx.doi.org/10.3390/photonics12050402 |
| Access Level: | acceso abierto |
| Palabra clave: | Visible Light Communication (VLC) High-brightness LED Series/parallel boost/buck DC/DC converter Split power |
| Sumario: | This paper presents a high-brightness LED (HB-LED) driver for visible light communication (VLC) based on two converters. The first is a high-frequency buck DC/DC converter and the second is a low-frequency boost DC/DC converter, connected in series with respect to the LEDloadandconnectedinparallelattheinput, formingaseries/parallel boost/buck DC/DC converter. It is well known that a VLC system needs to perform two different tasks: biasing the HB-LED load and transmitting the communication signal. These typically have different power requirements; the bias power is 75%, while the communication power is 25% of the total power. The requirements of each converter are also different; the communication signal requires a fast output response and, therefore, a high switching frequency, while the biasing control does not require a converter with a high output voltage response. The proposed architecture in this paper takes advantage of the differences between the two tasks and achieves high efficiency and high communication performance by means of splitting power between the two DC/DC converters. The high-frequency Received: 19 March 2025 Revised: 8 April 2025 Accepted: 16 April 2025 Published: 22 April 2025 Citation: Aller, D.G.; Lamar, D.G.; Garcia-Mere, J.R.; Hernando, M.M.; Rodriguez, J.; Sebastian, J. Series/Parallel Boost/Buck DC/DC Converter as a Visible Light Communication HB-LED Driver Based on Split Power. Photonics 2025, 12, 402. https://doi.org/10.3390/ photonics12050402 Copyright: © 2025 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/ licenses/by/4.0/). buck DC/DCconverter tracks the communication signal, while the low-frequency boost DC/DCconverter is responsible for lighting tasks. This technique enables high efficiency because most of the power is processed by the low-frequency converter, while a minor part of the power is processed by the high-frequency converter, achieving high communication performance. To provide experimental results, the proposed VLC HB-LED driver was built and validated by reproducing a 64-QAM with a bit rate up to 1.5 Mbps, reaching 91.5% overall efficiency. |
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