Open AccessDC IR-Drop Analysis of Multilayered Power Distribution Network by Discontinuous Galerkin Method With Thermal Effects Incorporated
Author(s) -
Ping Li,
Min Tang,
Zhi Xiang Huang,
Li Jun Jiang,
Hakan Bagci
Publication year - 2020
Publication title -
ieee transactions on components, packaging and manufacturing technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.496
H-Index - 49
eISSN - 2156-3985
pISSN - 2156-3950
DOI - 10.1109/tcpmt.2020.2992925
Subject(s) - components, circuits, devices and systems , engineered materials, dielectrics and plasmas
Due to the temperature-dependent resistivity of power distribution network (PDN) interconnects, a wiser and necessary strategy is to proceed the electrical–thermal cosimulation in order to include the thermal effects caused by Joule heating. As a natural domain decomposition method (DDM), in this article, a discontinuous Galerkin (DG) method is proposed to facilitate the steady-state electrical and thermal coanalysis. With the intention to avoid solving a globally coupled steady-state matrix system equations resulted from the implicit numerical flux in DG, the block Thomas method is deployed to solve the entire domain in a subdomain-by-subdomain scheme. As a direct solver, the block Thomas method is free of convergence problem frequently occurring in iterative methods, such as block Gauss–Seidel method. The capability of the proposed DG method in handling multiscale and complex 3-D PDNs is validated by several representative examples.