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1.2.2.1.1. Device Selection Section
1.2.2.1.2. Power Rail Data and Configuration Section
1.2.2.1.3. Meeting Target Impedance when Entering 0 A into the PDN Tool
1.2.2.1.4. Dealing with Multiple Shared Power Supply Pin Types
1.2.2.1.5. VRM Data Section
1.2.2.1.6. Rail Group Summary Section
1.2.2.1.7. VRM Impedance Section
1.2.2.1.8. BGA Via Section
1.2.2.1.9. Plane Section
1.2.2.1.10. Spreading Section
1.2.2.1.11. Implementing Split Planes
1.2.2.1.12. FEFFECTIVE Section
1.2.2.1.13. Decoupling Section
1.2.2.1.14. Results Summary Section
1.2.2.1.15. Recommended Flow for Deriving Decoupling for an FPGA System using the System_Decap Tab
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1.3.2.1. Selecting the Rails
- Click the System_Decap tab.
- Select a regulator type from the Regulator/Separator drop-down menu for Group #1.
- Select either x or x/related for each selected power rail.
Note: One power group can have one or more power rails depending on your power configuration. Refer to the Introduction tab in the PDN tool for a complete description of the tool options.
- Obtain the dynamic current estimations from the Report tab of the Early Power Estimator (EPE) tool.
- Enter these values in the Imax (Maximum Dynamic Current) column of the System_Decap tab in the PDN tool.
Note: You can always add your own additional engineering margin on top of the EPE estimation based on your system design experience and the Power Model Accuracy in the EPE tool.
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