Power delivery network analysis

摘要

A method and apparatus for power delivery network (PDN) analysis comprises obtaining time-domain single-pulse current response of the PDN, computing a maximum transient simultaneous switching noise (SSN) of the PDN according to the time-domain single-pulse current response, and determining that noise performance of the PDN conforms to a design requirement of the PDN if the maximum transient SSN is less than a PDN SSN threshold. Transient characteristics of the PDN can be analyzed.

主权项

1. A method for power delivery network (PDN) analysis, comprising: obtaining a time-domain single-pulse current response of the PDN; computing, by a computer, an actual simultaneous switching noise (SSN) of the PDN, wherein the actual SSN at any target time is the superposition of values at the target time of time-domain single-pulse current responses which occurred at various times before the target time and each target time is within a time window having a width of tthreshold, wherein tthreshold is a time length to make the time-domain single-pulse current response at an initial time attenuate with time to an extent lower than an allowable error; determining that noise performance of the PDN conforms to the design requirement when the maximum value of the actual SSN is less than a PDN SSN threshold; and providing the PDN to an integrated circuit when the maximum value of the actual SSN is less than the PDN SSN threshold.