Realizable Reduction of RC Networks with Current Sources for Dynamic IR-Drop Analysis of Power Networks of SoCs

Abstract

The authors present R(2)Power, an effective approach to the realizable reduction of RC networks with independent current sources. The proposed approach is based on the entrywise perturbation theory for diagonally dominant M-matrices. The accuracy of the node voltages of the reduced network, as compared to those of the original network, is maintained on the order of the entrywise perturbation performed during reduction. R2 Power can be used to reduce the size of RC networks used to model the power networks of SoCs, for efficient IR-drop analysis. Experiments showed that R(2)Power reduced the size of industrial examples by more than 95%, with maximum relative node voltage errors of less than 0.012%.