在扩展能力的LED驱动应用的高压自由转动二极管

2015 International Semiconductor Conference (CAS) Pub Date : 2015-10-01 DOI:10.1109/SMICND.2015.7355199

G. Pristavu, A. Vasilica, V. Anghel, R. Pascu, G. Brezeanu, F. Draghici

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引用次数: 0

摘要

研究了在基于降压变换器的LED驱动器中使用高功率自由旋转二极管——碳化硅肖特基二极管和PiN整流器。在输入电压达到250V时，为这两种二极管类型开发了多达60个led的偏置应用。实验结果表明，尽管不同器件之间的开关行为和耗散功率不同，但在所有情况下，变换器的驱动能力都有显著的扩展，效率都在95%以上。

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High voltage freewheeling diodes in an extended capability LED driving application

The use of high power freewheeling diodes - Silicon Carbide Schottky and PiN rectifiers - in buck converter-based LED drivers is investigated. Applications biasing up to 60 LEDs at input voltages reaching 250V are developed for both diode types. Despite different switching behavior and dissipated power between freewheeling devices, experimental results show a significant converter driving capability extension and an efficiency of over 95% in all cases.

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2015 International Semiconductor Conference (CAS)

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