Computational Heat Transfer Platform for Frequency Domain Reliability Design
作者： Jacob A. Free , Timothy A. Polom , Robert D. Lorenz
DOI: 10.1109/COMPEL.2019.8769619
关键词:
摘要: This paper presents a method to form spatiallyvarying electrothermal impedance frequency response function (FRF) figures using finite element (FE) models of transient heat transfer. It applies custom sensitivity analysis after intentionally commercial, computer-aided FE software as front-end leverage the accuracy these polished products enable. To illustrate modeling procedure, spatially-varying FRF surfaces are extracted from simple model discrete wide-bandgap power transistor. Next, prototype converter is analyzed. Comparison FRFs and experiment allow for identification diagnosis errors introduced method. The result virtual prototyping platform parametrically studying effects geometry interfaces, such wire bonds, on transfer dynamics fatigue-accelerating spatial temperature gradients induced by operation.
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