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Designing and Modeling for Power Integrity

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6 Author(s)
Swaminathan, M. ; Interconnect & Packaging Center, Georgia Inst. of Technol., Atlanta, GA, USA ; Daehyun Chung ; Grivet-Talocia, S. ; Bharath, K.
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After providing an overview of the state-of-the-art in power distribution design and modeling, this paper focuses on return path discontinuities (RPDs) for I/O signaling. After briefly describing their importance in the context of simultaneous switching noise, a specific case of RPD based on via discontinuities is discussed in detail in the context of both the frequency- and time-domain waveforms using a test vehicle. The modeling of RPD in practical packages and printed circuit boards is addressed along with substrate coupling due to nonideal reference planes. Finally, a high-impedance power distribution scheme for I/O signaling is presented that can potentially solve a number of RPD-related problems, followed by future challenges.

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Electromagnetic Compatibility, IEEE Transactions on  (Volume:52 ,  Issue: 2 )