Numerical simulation of reliability of single-sided/double-sided package interconnect structure under temperature cyclic load

可靠性(半导体) 材料科学 电子包装 互连 消散 包装工程 包对包 集成电路封装 压力(语言学) 变形(气象学) 结构工程 机械工程 功率(物理) 计算机科学 复合材料 工程类 集成电路 光电子学 图层(电子) 晶片切割 语言学 物理 哲学 量子力学 热力学 计算机网络
作者
Shuo Huang,Yang Liu,Ke Li
出处
期刊:Soldering & Surface Mount Technology [Emerald Publishing Limited]
卷期号:35 (1): 35-43
标识
DOI:10.1108/ssmt-12-2021-0066
摘要

Purpose The purpose of this paper is to compare the single-sided packaging structure and double-sided packaging structure of high-power module and study the overall heat dissipation performance and reliability of the module. Design/methodology/approach In this paper, the single-sided packaging structure and double-sided packaging structure of power module are designed based on Wolfspeed products. This paper is analyzed by finite element method. First, the heat dissipation performance of single-sided packaging structure and double-sided packaging structure is analyzed; second, the deformation and stress of single-sided packaging structure and double-sided packaging structure are compared and analyzed; and finally, the cumulative plastic deformation of single-sided packaging and double-sided packaging structures are compared and analyzed, and the fatigue life of the structure is calculated based on the plastic deformation. Findings In the heat transfer simulation, under the same power input, the heat dissipation performance of single-sided packaging structure is not as good as that of double-sided packaging structure. Under the reliability simulation of the same temperature cycle standard, the maximum equivalent stress of single-sided packaging structure is lower than that of double-sided packaging structure, but the fatigue life prediction based on plastic strain shows that the fatigue life of double-sided packaging structure is not different from that of single-sided packaging structure. Originality/value This paper creatively simulates the thermal characteristics and reliability of single-sided packaging structure and double-sided packaging structure and proves the advantages of double-sided packaging structure compared with single-sided packaging structure from the aspects of heat transfer performance and reliability.
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