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如何计算数据表中未包括的短脉冲宽度下的瞬态热阻抗
短脉冲宽度下的瞬态热阻抗近似计算公式如下。
tw1：Zth（tw1）的要求脉宽
tw2：数据表中的最小脉宽
Zth（tw1）：Zth（瞬态热阻抗）@tw1
Zth（tw2）：Zth（瞬态热阻抗）@tw2
当脉宽过短时，很难准确计算出该值。.
关于结点温度的计算，请参考“散热片的热设计和安装：功率MOSFET应用说明