| 大功率LED热阻测量研究 |
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| 引用本文： | 韩凯,刘木清.大功率LED热阻测量研究[J].复旦学报(自然科学版),2011(2):138-144. |
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| 作者姓名： | 韩凯 刘木清 |
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| 作者单位： | 复旦大学光源与照明工程系; |
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| 基金项目： | 国家重点基础研究发展计划(973计划)资助项目(2009CB724006) |
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| 摘 要： | LED热阻的测量是LED应用到照明领域中的重要课题.LED正向偏压关于电流阶跃的响应曲线包含了大量LED系统热阻热容的结构信息.通过对LED施加电流阶跃后电压响应曲线的测量和简单拟合,试图提取LED封装结构中的热阻、热容参数,结合理论计算得到的各组样品热阻、热容参数,试图将拟合值同实际封装结构中芯片衬底和固晶界面的热阻...
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| 关 键 词： | LED 结温测试 热阻测试 加热曲线 LABVIEW |
Study on The Measurement for the Thermal Resistance of Power LED |
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| HAN Kai,LIU Mu-qing.Study on The Measurement for the Thermal Resistance of Power LED[J].Journal of Fudan University(Natural Science),2011(2):138-144. |
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| Authors: | HAN Kai LIU Mu-qing |
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| Institution: | HAN Kai,LIU Mu-qing(Department of Illuminating Engineering and Light Sources,Fudan University,Shanghai 200433,China) |
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| Abstract: | LED thermal resistance measurement is of great importance for an LED general lighting system.The forward voltage respond of LED contains the RC structure information of the LED lighting system.To extract the thermal resistance and capacitance of sapphire substrate and die bond layer of the LED sample,a thermal measurement platform based on NI 5922 digitizer and LABVIEW is established,forward current stage is applied on the sample LED and at the meantime the forward voltage is fetched and fitted.By comparing... |
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| Keywords: | LED junction temperature measurement thermal resistance measurement heating curve LABVIEW |
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