Asymptotic Equivalent Network of the Heat Transferin PCB's and the Design of the Associated Library Models in SPICE

• Main Authors: Huang, Jiann-Yuan, 黃建原
• Other Authors: Lon-Kou Chang
• Format: Others
• Language: zh-TW
• Published: 1997
• Online Access: http://ndltd.ncl.edu.tw/handle/34303450991588937944

碩士 === 國立交通大學 === 控制工程系 === 85 === In this thesis, the partial differential equations for computing heat transferin PCB's and IC packages are approximated by using the finite difference method. We have proposed efficient equivalent circuit models to simulate the heat transfer mechanism of PCB's and IC's. We have also considered the complicate wiring models of PCB's in our simulation. In the modeling of IC's, we also pro-posed the asymptotic equivalent method to transfer the traditional three dimen-sion equivalent circuits of IC's into two dimension asymptotic equivalent cir- cuits. With the usage of this method, the simulation computation time and com-puter memory size can be reduced greatly. The asymptotic equivalent network ofIC's are used to build the library models designed in SPICE. According to ourconsideration of the accuracy, we can determine the order of simplified modelsi.e. different asymptotic equivalent models.