本文建立了一种计算塑料DIP(双列直插式封装)芯片结温的解析热阻模型,该模型根据DIP封装结构的散热途径建立.模型中的每一热阻均能通过较为简单的解析式进行计算,这与采用实验或数值模拟方法计算热阻的其他模型不同.利用该模型计算得到的一种塑料DIP芯片的结温与数值模拟得到的结温误差在±10%以内.
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