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Modeling of power delivery into 3D chips on silicon interposer

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7 Author(s)
Zheng Xu ; Dept. of Electr., Rensselaer Polytech. Inst., Troy, NY, USA ; Xiaoxiong Gu ; Scheuermann, M. ; Rose, K.
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While three-dimensional (3D) technology has several advantages for power delivery, an integrated chip-level, interposer-level, and package-level power distribution network in through-silicon-via (TSV)-based 3D system has to be modeled and evaluated. This paper reports on modeling of power delivery into 3D chip stacks on a silicon interposer/packaging substrate using a novel hybrid approach, i.e., combining the electromagnetic (EM) and analytic simulations. We intentionally partition the real stack-up structure of a 3D power network into separate components, i.e., package vias and traces, C-4 solders, interposer TSVs and planar wires, μ-C4 solders, chip TSVs, and on-chip power grids with node capacitors, decoupling capacitors and active current loads. All the passive RLGCs for each component are extracted using an EM simulation tool at a given working frequency point. We then assemble all the components back into a corresponding equivalent circuit model with those EM extracted RLGC values, thus to analyze the supply voltage (Vdd)variation over time for 3D systems in a manner of maximum accuracy and efficiency.

Published in:

Electronic Components and Technology Conference (ECTC), 2012 IEEE 62nd

Date of Conference:

May 29 2012-June 1 2012