Detection of Noise Coupling between Power Domains on Package
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Abstract
The power distribution network on package generally consists of multiple power domains. It is required for each power domain to deliver a robust and stable voltage, which allows the analysis to be done within each domain structure. Therefore, the power noise transfer from a noisier power domain to the neighboring quieter power domain is seldom considered, while it can lead to the performance failure at the worst. The power distribution network on package needs to be designed not only to meet the specifications within each power domain, but also to ensure a certain level of isolation among them. This paper proposes metrics to examine the noise coupling between two power domains on package. The proposed metrics can be used to briefly review the design healthiness and detect the potential coupling path in the early stage of the package design.
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