摘要
基于大功率LED结温测量方法,研究被测LED器件注入方波电流脉冲过程中电流幅度与工作流量之间的比值。发现实际额定电流与冲脉电流比值相同。通过直接测量LED在额定工作电流下的正向结电压,并辅助温度敏感系数,就能够测得LED的结温。
Based on the junction temperature measurement method of high power LED, the ratio of current amplitude to workflow during injection of square wave current pulse into the measured LED device is studied. It is found that the ratio of actual rated current to impulse current is the same. The junction temperature of the LED can be measured by directly measuring the forward junction voltage of the LED under the rated working current and assisting the temperature sensitivity coefficient.
引文
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