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<p>Light-emitting diode (LED) technology has emerged as a preferred lighting solution because of its high luminous efficacy, long lifetime, and low power consumption. However, LEDs are devices that require current control and demand efficient driver circuits for uniform illumination. This paper proposes a full-bridge converter for driving multiple LED lamps with improved power conversion performance. The proposed topology employs two distinct DC input sources connected in an anti-series configuration to supply the full bridge, thereby reducing the voltage stress across the switching devices. A series resonant inductor-capacitor network enables zero-voltage switching (ZVS), which minimizes switching losses and enhances converter efficiency. The converter is designed to operate four LED lamps, including two identical lamps and two lamps of different power ratings while maintaining the same current rating. By distributing the LED loads across the two bridge legs, the current stress on the switches is reduced, and the switch conducting current becomes less dependent on individual lamp currents. In addition, the proposed converter provides lamp current regulation, pulse-width modulation (PWM) dimming capability, low power processing, reduced component count, and high conversion efficiency. The operating principles are explained through a detailed steady-state analysis, and they are verified using simulation and experimental results, demonstrating the feasibility and effectiveness of the proposed converter for multi-output LED lighting applications.</p>

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A Buck-Boost Integrated Two Input LED Driver Configuration with Reduced Voltage and Current Stress

  • 期刊论文

  • 发表日期：

    2026年7月27日

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  • Rajasekhara Reddy Ponduru,
  • Dharavath Kishan,
  • Md Waseem Ahmad,
  • Batchu Veena Vani

摘要

Light-emitting diode (LED) technology has emerged as a preferred lighting solution because of its high luminous efficacy, long lifetime, and low power consumption. However, LEDs are devices that require current control and demand efficient driver circuits for uniform illumination. This paper proposes a full-bridge converter for driving multiple LED lamps with improved power conversion performance. The proposed topology employs two distinct DC input sources connected in an anti-series configuration to supply the full bridge, thereby reducing the voltage stress across the switching devices. A series resonant inductor-capacitor network enables zero-voltage switching (ZVS), which minimizes switching losses and enhances converter efficiency. The converter is designed to operate four LED lamps, including two identical lamps and two lamps of different power ratings while maintaining the same current rating. By distributing the LED loads across the two bridge legs, the current stress on the switches is reduced, and the switch conducting current becomes less dependent on individual lamp currents. In addition, the proposed converter provides lamp current regulation, pulse-width modulation (PWM) dimming capability, low power processing, reduced component count, and high conversion efficiency. The operating principles are explained through a detailed steady-state analysis, and they are verified using simulation and experimental results, demonstrating the feasibility and effectiveness of the proposed converter for multi-output LED lighting applications.