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Journals / Mühendislik Bilimleri ve Araştırmaları Dergisi / 2026 / Cilt: 8 Sayı: 2

Soft Switching LED Driver Implementation with ZCS Buck Converter

ZCS Buck Dönüştürücü ile Yumuşak Anahtarlamalı LED Sürücü Uygulaması

Selim Öncü(KARABÜK ÜNİVERSİTESİ)0000-0001-6432-0634
Ali Rıza Derin(Konya Mesleki ve Teknik Anadolu Lisesi)0000-0002-1825-7723
Kenan Ünal(GAZİ ÜNİVERSİTESİ)0000-0002-2660-8386
Pages
127–134
Publication Date
2026-10-27
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

A comparison of the effect of MOSFET temperature between the proposed HW-ZCS buck converter and a conventional PWM buck converter based LED driver has also been made.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The development of semiconductor technology has led to the widespread adoption of LEDs as a highly efficient and economical lighting system.
📊
Key Findings & Data:In order for LED systems to achieve higher efficiency, the driver circuits must also operate with high efficiency.
💡
Conclusion & Impact:A comparison of the effect of MOSFET temperature between the proposed HW-ZCS buck converter and a conventional PWM buck converter based LED driver has also been made.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:ZCS Buck Dönüştürücü · LED Sürücü · Yumuşak Anahtarlama

Abstract

The development of semiconductor technology has led to the widespread adoption of LEDs as a highly efficient and economical lighting system. In order for LED systems to achieve higher efficiency, the driver circuits must also operate with high efficiency. Conventional PWM hard switching power converters used in LED drivers experience excessive heating of their power switches due to switching losses, leading to a reduction in power conversion efficiency. In order to enhance the power conversion efficiency of LED drivers, it is necessary to use solutions that minimize the switching losses. One of these solutions is the use of soft-switching power converters. This paper proposes a half-wave (HW) zero-current switching (ZCS) buck converter as a solution to improve LED driver’s efficiency. The switching frequency of the proposed LED driver was varied between 142-200 kHz, and the brightness of the LEDs dimmed under ZCS conditions. A comparison of the effect of MOSFET temperature between the proposed HW-ZCS buck converter and a conventional PWM buck converter based LED driver has also been made.

Özet

Yarı iletken teknolojisindeki gelişmeler, LED’lerin yüksek verimli ve ekonomik bir aydınlatma sistemi olarak yaygın şekilde kullanılmasına olanak sağlamıştır. LED sistemlerinin daha yüksek verimle çalışabilmesi için sürücü devrelerinin de yüksek verimle çalışması gerekmektedir. LED sürücülerinde kullanılan geleneksel PWM tabanlı sert anahtarlamalı güç dönüştürücülerinde, anahtarlama kayıpları nedeniyle güç anahtarlarında aşırı ısınma meydana gelmekte ve bu durum güç dönüşüm veriminin azalmasına yol açmaktadır. LED sürücülerinin güç dönüşüm verimini artırmak için anahtarlama kayıplarını en aza indiren çözümlerin kullanılması gerekmektedir. Bu çözümlerden biri yumuşak anahtarlamalı güç dönüştürücülerin kullanılmasıdır. Bu çalışmada, LED sürücüsünün verimliliğini artırmak amacıyla yarım dalga (HW) sıfır akımda anahtarlamalı (ZCS) bir buck dönüştürücü önerilmektedir. Önerilen LED sürücüsünün anahtarlama frekansı 142–200 kHz aralığında değiştirilmiş ve LED’lerin parlaklığı ZCS koşulları altında kısılmıştır. Ayrıca, önerilen HW-ZCS buck dönüştürücü ile geleneksel PWM tabanlı buck dönüştürücüye sahip LED sürücüsünün MOSFET gövde sıcaklığı üzerindeki etkileri karşılaştırılmıştır.

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Cite This Article

Öncü, S., Derin, A. R., Ünal, K. (2026). Soft Switching LED Driver Implementation with ZCS Buck Converter. Mühendislik Bilimleri ve Araştırmaları Dergisi, Cilt: 8 Sayı: 2, 127–134. https://doi.org/10.46387/bjesr.1902290

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References (19)

  1. R. Lai et al., “Design and Anaysis of The Average Current-Detection Method for Wide Input Voltage Range Constant-Current Lighting LED Driver,” in 2020 32nd International Symposium on Power Semiconductor Devices and ICs (ISPSD), Sep. 2020, pp. 266–269.
  2. R. R. Khorasani and N. Ray Chaudhuri, “An Improved High-Frequency Single-Stage AC LED Driver with Soft Switching Operation and No Input Electrolytic Capacitor,” in 2024 IEEE Applied Power Electronics Conference and Exposition (APEC), Feb. 2024, pp. 2124–2129.
  3. J. Y. Rumbo-Morales et al., “Geometric Control and Structure-at-Infinity Control for Disturbance Rejection and Fault Compensation Regarding Buck Converter-Based LED Driver,” Mathematics, vol. 12, no. 9, p. 1277, Apr. 2024,
  4. S. Saponara, G. Pasetti, N. Costantino, F. Tinfena, P. Dabramo, and L. Fanucci, “A flexible LED driver for automotive lighting applications: IC design and experimental characterization,” IEEE Trans. Power Electron., vol. 27, no. 3, pp. 1071–1075, 2012.
  5. M. Martins, M. S. Perdigao, A. M. S. Mendes, R. A. Pinto, and J. M. Alonso, “Analysis, Design, and Experimentation of a Dimmable Resonant-Switched-Capacitor LED Driver With Variable Inductor Control,” IEEE Trans. Power Electron., vol. 32, no. 4, pp. 3051–3062, Apr. 2017.
  6. Huang-Jen Chiu, Yu-Kang Lo, Jun-Ting Chen, Shih-Jen Cheng, Chung-Yi Lin, and Shann-Chyi Mou, “A High-Efficiency Dimmable LED Driver for Low-Power Lighting Applications,” IEEE Trans. Ind. Electron., vol. 57, no. 2, pp. 735–743, Feb. 2010.
  7. M. Esteki, S. A. Khajehoddin, A. Safaee, and Y. Li, “LED Systems Applications and LED Driver Topologies: A eview,” IEEE Access, vol. 11, no. April, pp. 38324–38358, 2023.
  8. V. Wuti, A. Luangpol, K. Tattiwong, S. Trakuldit, A. Taylim, and C. Bunlaksananusorn, “Analysis and design of a zero-voltage-switched (ZVS) quasi-resonant buck converter operating in full-wave mode,” Proc. - 2020 6th Int. Conf. Eng. Appl. Sci. Technol. ICEAST 2020, pp. 20–23, 2020.
  9. K. Liu, R. Oruganti, F. C. Y. Lee, and S. Li, “Quasi-Resonant Converters Topologies and Characteristics,” no. 1, pp. 62–71, 1987.
  10. M. H. Rashid, S. Y. (Ron) Hui, H. S.-H. Chung, S. Madichetty, N. B. S. Kumar, and B. M. Krishna, “Resonant and Soft-Switching Converters,” in Power Electronics Handbook, Elsevier, pp. 345–405, 2024.
  11. H. Van Der Broeck, G. Sauerländer, and M. Wendt, “Power driver topologies and control schemes for LEDs,” Conf. Proc. - IEEE Appl. Power Electron. Conf. Expo. - APEC, pp. 1319–1325, 2007.
  12. S. Mukherjee, V. Yousefzadeh, A. Sepahvand, M. Doshi, and D. Maksimović, “A Two-Stage Automotive LED Driver With Multiple Outputs,” IEEE Trans. Power Electron., vol. 36, no. 12, pp. 14175–14186, Dec. 2021.
  13. A. Knott et al., “Evolution of Very High Frequency Power Supplies,” IEEE J. Emerg. Sel. Top. Power Electron., vol. 2, no. 3, pp. 386–394, Sep. 2014.
  14. E. Eloi dos Santos Filho, P. H. A. Miranda, E. M. Sá, and F. L. M. Antunes, “A LED Driver With Switched Capacitor,” IEEE Trans. Ind. Appl., vol. 50, no. 5, pp. 3046–3054, Sep. 2014.
  15. M. P. Madsen, A. Knott, and M. A. E. Andersen, “Very high frequency resonant DC/DC converters for LED ighting,” in 2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC), Mar. 2013, pp. 835–839, 2013.
  16. F. Pouladi, H. Farzanehfard, and E. Adib, “Battery Operated Soft Switching Resonant Buck–Boost LED Driver With Single Magnetic Element,” IEEE Trans. Power Electron., vol. 34, no. 3, pp. 2704–2711, Mar. 2019.
  17. S. Nacar, “Hybrid-Controlled Class-E resonant converter with synchronous rectifier for LED driver pplications,” Eng. Sci. Technol. an Int. J., vol. 56, no. November 2023, p. 101781, 2024.
  18. S. Oncu, K. Unal, and U. Tuncer, “Engineering Science and Technology, an International Journal Laboratory setup for teaching resonant converters and induction heating,” Eng. Sci. Technol. an Int. J., vol. 28, p. 101012, 2022.
  19. S. Oncu, K. Unal, and U. Tuncer, “Engineering Science and Technology, an International Journal Laboratory setup for teaching resonant converters and induction heating,” Eng. Sci. Technol. an Int. J., vol. 28, p. 101012, 2022.