Thermal-mechanical design of sandwich SiC power module with micro-channel cooling

• Main Authors: Yin, Shan, Tseng, King Jet, Zhao, Jiyun
• 其他作者: School of Electrical and Electronic Engineering
• 格式: Conference or Workshop Item
• 語言: English
• 出版: 2013
• 主題: DRNTU::Engineering::Electrical and electronic engineering
• 在線閱讀: https://hdl.handle.net/10356/96479; http://hdl.handle.net/10220/17272

A sandwich packaging structure of SiC power module for HEV application has been designed and numerically investigated by CFD study. The design has a micro-channel heat sink integrated in the back Cu-layer of DBC substrate. Doubleside cooling is adopted and liquid coolant (ethylene glycol, 105 °C) flows in opposite directions in the two heat sinks. Compared with wirebonding packaging, the proposed sandwich structure can almost double the cooling efficiency (thermal resistance 0.11 K/W) and temperature-distribution uniformity. Finite element analysis of thermal stress was further carried out to check that the CTE mismatch in the packaging has been minimized.