基于不同電流波形下大功率LED芯片光電熱性能研究
王信澤，徐玉珍，林維明
福州大學(xué) 電氣工程與自動(dòng)化學(xué)院，福建 福州 350108
摘 要：以不同知名廠家的大功率LED芯片為對象，基于簡化后的熱網(wǎng)絡(luò)模型，采用積分球測試系統(tǒng)，分析研究了大功率LED芯片的光通量、光效以及色溫等輸出光性能隨輸入電流和溫度變化的規(guī)律。結(jié)果表明，在不同輸入電流波形驅(qū)動(dòng)時(shí)，大功率LED芯片的輸出特性有所不同且LED的光電特性受溫度的影響明顯。
關(guān)鍵詞：大功率LED芯片；光電熱性能；輸出特性
中圖分類號(hào)：TN312+.8 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1007-3175(2015)04-0005-05
Study on Photoelectric Thermal Performance of High-Power LED Chip Based on Different Current Waveforms
WANG Xin-ze, XU Yu-zhen, LIN Wei-ming
College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350108, China
Abstract: Taking a high power LED chip produced by different well-known manufacturers as the object, this paper used an integrating sphere testing system based on simplified thermal network model, analyzing the rules of output light performance for the high power LED chip, including its light flux, light efficiency and color temperature, which changed with the input current and temperature. The result shows that under different input current waveforms, the output characteristics of the high power LED chip has different photoelectric performances, and the photoelectric characteristics of the LED are significantly influenced by temperature.
Key words: high power LED chip; photoelectric thermal performance; output characteristic
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