一种测量功率型LED热阻的方法  

A measuring method for thermal characteristics of power type LED

作　　者：肖炜[1] 刘一兵[1] 

机构地区：[1]邵阳职业技术学院机电工程系,邵阳422000

出　　处：《低温与超导》2011年第6期80-82,共3页Cryogenics and Superconductivity

基　　金：湖南省科技计划项目(2010GK3182);邵阳市科技计划项目(C0926)资助

摘　　要：叙述了正向电压法测量功率型LED温度系数K和热阻的原理,介绍了测试装置及具体测试过程,对蓝宝石衬底正装LED和硅衬底倒装LED的温度系数和热阻进行了测量。选用热阻已知的LED样品,对其实际值与测量值进行了比较,误差在5%左右,证实了这种热阻测量方法是可行的。The forward voltage measurement principle of the thermal resistance and temperature coefficient K was investigated. Test device and the specific testing process were introduced, temperature coefficient and thermal resistance of two kinds of LED, such as LED on sapphire and silicon substrates flip - mounted LED were measured. Choosing a LED sample and comparing its thermal resistance with the measured values, the error was about 5%. The fact confirms this resistance measurement method is feasible.

关 键 词：功率型LED 结温 热阻 测量 

分 类 号：TB9[一般工业技术—计量学]