高效在线测量加速实验中双极晶体管结温方法的研究

发布时间：2018-06-27 00:25

  本文选题：功率器件 + 结温　； 参考：《物理学报》2017年22期

【摘要】：针对晶体管在加速寿命实验和老炼实验等实际工程中结温的在线测控问题,本文基于大电流电学测温方法研究了型号为2N3055的双极大功率晶体管在恒定的集电极电压V_(ce)和集电极电流I_(ce)条件下发射结电压V_(be)随着温度T变化的对应关系.研究结果表明,温度在40—140℃范围内时,在集电极加载大功率电流电压的条件下,发射结电压随温度上升而线性减小,基极电流随温度变化不超过4%.通过理论推导恒定功率下发射结电压与温度的数学模型,证明了当基极电流数值随温度变化不超过4%时,V_(be)-T关系曲线呈线性且理论上引起的温度误差不超过0.5℃,以此为基础推导出一种新的在线测量加速实验中结温测试公式.最后利用Phase11进行对比验证实验,证明了该方法的正确性.
[Abstract]:In view of the on-line measurement and control of junction temperature in practical projects such as accelerated life test and aging experiment, Based on the method of high current electrical temperature measurement, the relationship between the emission junction voltage V _ (be) and the temperature T of the bipolar high-power transistor 2N3055 under constant collector voltage V _ (ce) and collector current I _ (ce) is studied in this paper. The results show that the emission junction voltage decreases linearly with the increase of temperature and the base current does not change more than 4 with the temperature range from 40 鈩，

本文编号：2071977