Proposal of Fully Integrated LED Driver with Enhanced Power Density for Street-lighting Applications

Igor B. Barboza; Guirguis Z. Abdelmessih; Renan R. Duarte; Maikel F. Menke; Marco A. D. Costa

doi:10.18618/REP.e202526

Authors

Igor B. Barboza Universidade Federal de Santa Maria https://orcid.org/0000-0003-4833-749X
Guirguis Z. Abdelmessih Universidad de Burgos https://orcid.org/0000-0002-1867-6012
Renan R. Duarte Universidade Federal de Santa Maria https://orcid.org/0000-0001-8427-8621
Maikel F. Menke Universidade Federal de Santa Maria https://orcid.org/0000-0002-6025-7129
Marco A. D. Costa Universidade Federal de Santa Maria https://orcid.org/0000-0003-1233-6858

DOI:

https://doi.org/10.18618/REP.e202526

Keywords:

Integrated magnetics, light-emitting diodes, LED drivers, magnetic core

Abstract

This paper proposes a new fully integrated Boost and Buck converter. The topology results from integrating the Boost as the power factor correction (PFC) stage and the Buck as power control (PC) stage. Besides this, the paper presents a methodology for designing the PFC stage inductor based on the inductance ratio between the PFC and PC stage inductances. In this work, the methodology analysis is carried out to enhance the converter power density using magnetics integration. Magnetic circuits and finite elements simulations compare the standalone and the integrated magnetics designs. Finally, the methodology is validated for the proposed fully integrated topology by implementing an 180~W LED driver prototype, which works properly for the grid voltage range (180-250~$V_{rms}$) and ensures full DCM operation between 10 and 100\% of the LED load power. The experimental results show that the proposed topology fulfills the recommendation IEEE 1789-2015 and the standard IEC 61000-3-2 (Class C) in the grid range. The peak efficiency is 93.5\% at 180~$V_{rms}$. The integrated magnetic enables a volume reduction of 20\% compared to the standalone magnetics. The converter component count is significantly reduced compared to LED drivers found in the literature for street-lighting applications.

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Author Biographies

Igor B. Barboza, Universidade Federal de Santa Maria

was born in Santa Maria – RS, in 1997. He received his Bachelor's and Master's degrees in Electrical Engineering from the Federal University of Santa Maria (UFSM) in 2020 and 2022, respectively. Since mid-2015, he has been a member of the GEDRE research group, focused on Intelligence in Lighting. He is currently pursuing a dual degree Ph.D. (cotutelle) in Electrical Engineering by the UFSM and the University of Burgos (UBU), in Spain. His research interests include electronic systems for lighting, LED driver circuits, converters with GaN transistors, and photovoltaic solar energy systems. He is a member of IEEE and chaired the UFSM IEEE Student Branch between 2023 and 2024.

Guirguis Z. Abdelmessih, Universidad de Burgos

received his B.Sc. degree in Electrical Engineering from the University of Ain Shams, Egypt, in 2013. He received his M.Sc. degree in “Electrical Energy Conversion and Power Systems” and his Ph.D. degree (with honors) on “analysis and development of improved converters for LED drivers with special focus on efficiency and dimming” from the University of Oviedo, Gijón, Spain, in 2015 and 2020, respectively. Since 2021, he is working as a Permanent Professor at the electromechanical department of the University of Burgos, Spain. Dr. Guirguis is the co-author of more than 28 journal and conference publications, including 12 publications in highly referenced journals. His research interests include light-emitting diodes, LED drivers, dc/dc converters, ac/dc converters, PFC stages, dimming systems, renewable energy, and power systems. He currently serves as Associate Editor of the IEEE Transactions on Industry Applications and IEEE Industry Applications Magazine.

Renan R. Duarte, Universidade Federal de Santa Maria

received the B.S., M.Sc., and Ph.D. degrees in Electrical Engineering from the Federal University of Santa Maria (2015, 2017, and 2022, respectively). He completed a curricular internship at Fraunhofer IZM in Berlin, Germany, in the RF. Renan Rodrigo Duarte received the B.S., M.Sc., and Ph.D. degrees in Electrical Engineering from the Federal University of Santa Maria (2015, 2017, and 2022, respectively). He completed a curricular internship at Fraunhofer IZM in Berlin, Germany, in the RF Smart Sensor Systems department (2014-2015) and worked as a senior designer at Zagonel S.A., focusing on hardware and embedded firmware design and development (2020-2023). Since 2023, he has been a professor at the Federal University of Santa Maria (UFSM). His main research areas include artificial lighting systems, high-efficiency converters, and GaN semiconductors.rt Sensor Systems department (2014-2015) and worked as a senior designer at Zagonel S.A., focusing on hardware and embedded firmware design and development (2020-2023). Since 2023, he has been a professor at the Federal University of Santa Maria (UFSM). His main research areas include artificial lighting systems, high-efficiency converters, and GaN semiconductors.

Maikel F. Menke, Universidade Federal de Santa Maria

received the B.S., M.Sc., and Ph.D. degrees in Electrical Engineering from the Federal University of Santa Maria, Santa Maria, Brazil, in 2015, 2016, and 2021, respectively. From 2019 to 2022, he was a Professor with the Federal Institute of Santa Catarina. Since 2022, he has been a Professor with the Federal University of Santa Maria. His research interests include lighting applications, DC-DC converters, power factor correction, and the analysis, design, modeling, and control of resonant power converters. Dr. Menke is a Member of the Brazilian Power Electronics Society (SOBRAEP) and IEEE.

Marco A. D. Costa , Universidade Federal de Santa Maria

received his B.S. and M.Sc. degrees in Electrical Engineering from the Federal University of Santa Maria, Brazil, in 2002 and 2004, respectively. He earned his Ph.D. degree (with honors) in Electrical Engineering from the University of Oviedo, Spain, in 2008. Since 2009, he has been serving as a Professor at the Federal University of Santa Maria, Brazil. Dr. Dalla Costa has co-authored over 240 journal and conference papers. His research interests include power electronics applied to lighting systems, LED drivers, LED modeling, horticultural lighting, and visible light communication systems. Since 2018, he has been serving as an Associate Editor for the IEEE Transactions on Industrial Electronics and the IEEE Journal of Emerging and Selected Topics in Power Electronics. Additionally, he chaired the IEEE Industry Applications Society's ILDC (2019–2020) and MSDAD (2020–2021).

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