Modeling of Power Distribution Networks for Path Finding

摘要

In a method for analyzing pre-register-transfer level phase of a power distribution network in an electronic circuit design, in which the power distribution network is defined to include a matrix of a number repeated leaf cells, wherein each of the matrix of repeated leaf cells corresponds to a model leaf cell wherein the model leaf cell includes an alternating Vdd and Gnd grid on top of an interposer. A plurality of local ports of the model leaf cell is defined. The plurality of local ports is defined where each of the matrix of repeated leaf cells is coupled to adjacent ones of the matrix of repeated leaf cells. The model leaf cell is simulated using an implementation of an integral equation based solver to compute electromagnetic scattering parameters (S-parameters) that correspond to the model leaf cell. The electromagnetic S-parameters are cascaded across the matrix using a binary merge algorithm. S-parameters of any non-periodic power distribution network component models are coupled to the S-parameters of the matrix. An overall impedance response of the power distribution network is computed based on S-parameters of the matrix and the S-parameters of any non-periodic power distribution network component models using an integrated circuit modelling program.

主权项

1. A method for analyzing pre-register-transfer level phase of a power distribution network in an electronic circuit design, comprising the steps of:
(a) defining the power distribution network to include a matrix of a number repeated leaf cells, wherein each of the matrix of repeated leaf cells corresponds to a model leaf cell wherein the model leaf cell includes an alternating Vdd and Gnd grid on top of an interposer; (b) defining a plurality of local ports of the model leaf cell, the plurality of local ports being defined where each of the matrix of repeated leaf cells is coupled to adjacent ones of the matrix of repeated leaf cells; (c) simulating the model leaf cell using an implementation of an integral equation based solver to compute electromagnetic scattering parameters (S-parameters) that correspond to the model leaf cell; (d) cascading the electromagnetic S-parameters across the matrix using a binary merge algorithm; (e) coupling S-parameters of any non-periodic power distribution network component models to the S-parameters of the matrix; and (f) computing an overall impedance response of the power distribution network based on S-parameters of the matrix and the S-parameters of any non-periodic power distribution network component models using an integrated circuit modelling program.