A Double Stage DC/DC Converter for LED Lighting Automotive Systems Marco Failla, Gianpaolo Vitale   2019/07/15

Abstract

In this paper a DC/DC converter, conceived to be employed for LED lighting in automotive application, is proposed. It is composed of two stages to fit both to the constraint to be powered by a variable supply voltage and to deliver a constant output load current with reduced ripple to supply the LED.
Firstly the LED has been experimentally characterized to obtain a model to be implemented on a circuit simulator. Then the design of the converter has been carried out, including the control laws, to verify the compliance with the constraints. Finally, a circuit based on commercial devices is proposed to be applied both to lighting and to direction indicators light, including current and temperature protection. Results, given in simulation, show good performance achievable with a low-cost hardware.

Authors and affiliations

Marco Failla1, Gianpaolo Vitale2
1. Dipartimento di Energia, Ingegneria dell’Informazione e Modelli Matematici, Università degli Studi di Palermo, Italy
2. ICAR, Institute for high performance computing and networking, National Research Council (CNR), Palermo, Italy

Key words

LED, automotive, lighting, efficiency, DC/DC converter, current control, white LED, current ripple.

References

[1] Y. Sun, X. Wu, “High efficiency LED driver featuring auto output-voltage tuning”, IEEE International Conference of Electron Devices and Solid-State Circuits (2010).
[2] S. Marconi, G. Spiazzi, A. Bevilacqua, M. Galvano, S. Stoegner, “Efficiency improvement in Automotive Rear Lighting applications: a practical industry-ready implementation”, 50th Annual Meeting of the Associazione Società Italiana di Elettronica (SIE) Napoli, Italy, June 20-22, (2018).
[3] Y. Dubois, T. Krzesaj, “Automotive Lighting Facing the Design Trend: From Former Basic Conception to Reliable
and Sustainable Advanced Development”, electronic goes green conference, Berlin, Germany, 6-9 Sept. (2016).
[4] “Automotive lighting: technology, industry and market trends”,Yole developement, Market and Technology report,
https://www.slideshare.net/Yole_Developpement/automotive -lighting-technology-industry-and-market-trends-2017-
report-by-yole-developpement (2017)
[5] “Lighting Systems: from light to advanced vision technologies”,Valeo,https://www.slideshare.net/ValeoService/valeo-lighting-systems-from-light-to-advanced-visiontechnologies-valeoscope-technical-handbook-998542
[6] G. Vitale, “Energy saving by power electronics: towards a new concept of renewable source”, International Conference
on Renewable Energies and Power Quality (ICREPQ’16), Madrid (Spain) 4-6 May 2016,
[7] P. Giannelli, L. Capineri, G. Calabrese, G. Frattini, M. Granato “A reduced output ripple step-up DC-DC converter
for automotive LED lighting”, 13th Conference on Ph.D. Research in Microelectronics and Electronics, PRIME, Giardini Naxos, Italy, 12-15 June (2017).
[8] Y. Qu, W. Shu, J. S. Chang, “A Low-EMI High-Reliability PWM-Based Dual-Phase LED Driver for Automotive Lighting” IEEE Journal of Emerging and Selected Topics in Power Electronics, Vol. 6, Issue: 3, pp 1179-1189, (2018).
[9] “Average Current Mode Control of Switching Power Supplies”, Lloyd Dixon, Unitrode application note.
[10] N. Selvaraju, P. Shanmugham, S. Somkun, “Two-Phase Interleaved Boost Converter Using Coupled Inductor for Fuel
Cell Applications”, International Conference on Alternative Energy in Developing Countries and Emerging Economies
AEDCEE, 25–26 May, Bangkok, Thailand (2017).
[11] H. Choi, “Practical Feedback Loop Design Considerations for Switched Mode Power Supplies”, Fairchild Semiconductor Power Seminar (2010 – 2011).
[12] R. Lin, “Modeling and Compensator Design of LED Driver Systems”, IEEE Industry Applications Society Annual
Meeting, 1-5 Oct. (2017).
[13] Jose T.A., Joseph K.D “LED Modelling and Input Current Ripple Reduction of Cuk Converter using Magnetic
Coupling”, International Conference on Next Generation Intelligent Systems, Kottayam, India, 1-3 Sept. 2016 (2016).