Design of non-isolated DC-DC converter-based LED driver for electric vehicle
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Full Text |
Pdf
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Author |
L. Hubert Tony Raj, G. Ramprakash, A. Venkatesh, K. Umamaheswari and K. Durgalakshmi
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e-ISSN |
1819-6608 |
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On Pages
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648-654
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Volume No. |
20
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Issue No. |
10
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Issue Date |
August 5, 2025
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DOI |
https://doi.org/10.59018/052580
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Keywords |
DC-DC converter, automotive LED driver, buck-boost.
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Abstract
This paper introduces a non-isolated DC-DC converter (NIDDC) tailored for automotive lighting, addressing the challenges of high-power consumption and voltage sensitivity in conventional systems. This system employs two switches to reduce the voltage stress across the switches and improve the system efficiency by 94%. The NIDDC converter is designed in such a way that it has reduced voltage and current ripple. Conduction and switching losses are calculated to evaluate system efficiency, validated through simulation in MATLAB software, and the realization of a 70 W power-rated prototype. Extensive testing under wide input voltage variations (10 to 50 V) for a 30 V/0.7A light-emitting diode (LED) string confirms the NIDDC's robustness and effectiveness in real-world conditions, offering a promising solution for enhancing automotive headlight performance and safety.
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