Summary - Altera Stratix IV GX Manual

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Figure 1–18. Enlarged Plot of Zeff Using the Figure 1-18 Design
1
Some power rails are sensitive to noise, such as PLL-related power supplies. They are
isolated from other rails by a power filter (usually ferrite bead) although they connect
to the same VRM module. These isolated rails usually have their own PCB power
plane. In this scenario, you must treat each group of isolated power rails as an
individual power supply and decouple each power supply individually following the
procedures described in this User Guide.

Summary

This user guide provides a brief overview of the various tabs in the PDN tool. You can
quickly and accurately design a robust power delivery network by calculating an
optimum number of capacitors that meet the target impedance requirements for a
given power supply.
Power Delivery Network (PDN) Tool for Stratix IV Devices User Guide
Chapter 1: Power Delivery Network (PDN) Tool User Guide for Stratix IV Devices
Summary
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