2 research outputs found
Non Uniform On Chip Power Delivery Network Synthesis Methodology
In this paper, we proposed a non-uniform power delivery network (PDN)
synthesis methodology. It first constructs initial PDN using uniform approach.
Then preliminary power integrity analysis is performed to derive IR-safe
candidate window. Congestion map is obtained based global route congestion
estimation. A self-adaptive non-uniform PDN synthesis is then performed to
globally and locally optimize PDN over selected regions. The PDN synthesis is
congestion-driven and IR- guarded. Experimental results show significant timing
important in trade-off small PDN length reduction with no EM/IR impact. We
further explored potential power savings using our non-uniform PDN synthesis
methodology.Comment: 6 pages, 5 figures, 3 table
Model and Analysis for Combined Package and On-Chip Power Grid Simulation
We present new modeling and simulation techniques to improve the accuracy and efficiency of transient analysis of large power distribution grids. These include an accurate model for the inherent decoupling capacitance of non-switching devices, as well as a statistical switching current model for the switching devices. Moreover, three new simulation techniques are presented for problem size-reduction and speed-up. Results of application of these techniques on three PowerPCtm microprocessors are also presented. 1