Dynamic Compact Thermal Model for electrothermal modeling and design optimization of automotive power devices

摘要

In this paper we present a simple methodology for generating dynamic compact thermal model (CTM) of electronics components. Several innovations generating accurate dynamic Compact Thermal Models (CTMs) are proposed in this paper. This makes possible providing customers (automotive systems suppliers) with extended datasheets, including CTMs, without publishing any confidential information about technology, device structures nor materials. The proposed model takes into account the 3D effects of the heat transfer, it considers the effect of the nonlinearity of parameters like thermal conductivity and the dependence of dissipated power on temperature. Moreover, the total number of boundary conditions allowing the generation of boundary condition independent (BCI) compact thermal models is considerably reduced. The method presented in this paper is applied to the extraction of dynamic CTM for automotive power device.