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[期刊论文][ORIGINAL PAPER]
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Soft‐switched full‐bridge light‐emitting diode driver with reduced rectifier components
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作 者：
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Valluru Chandrasekhar;Neti Vishwanathan;Hemasundara Rao Kolla;
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出版年：2024
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页 码：1342 - 1357
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出版社：John Wiley & Sons, Ltd.
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摘 要：
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Summary In this paper, a new light‐emitting diode （LED） driver based on full‐bridge series resonant converter （SRC） is presented. In the proposed converter LED, load is placed in between DC source and the input side of the full‐bridge inverter which reduces the rectifier components of the SRC. The proposed converter reduces the number of diodes used for rectification and ensures zero voltage switching of the power switches which improves the efficiency of the converter. LED lamp current is regulated with phase‐shift pulse width modulation （PWM） of full‐bridge. Lamp illumination is controlled with PWM dimming. The operation and mathematical analysis of LED driver is presented. To validate the proposed concept, a 40‐W laboratory prototype is developed. Experimental results are presented. Peak efficiency of 93% is obtained.
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关键字：
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LED driver;phase shift control;PWM dimming;resonant converter;zero voltage switching （ZVS）
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所属期刊
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ISSN: 0098-9886
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来自：John Wiley & Sons, Ltd.
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