Device-Specific Power Delivery Network (PDN) Tool 2.0 User Guide

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ID 683293
Date 8/24/2021
Public
Document Table of Contents
Document Table of Contents x
1. Device-Specific Power Delivery Network (PDN) Tool 2.0 User Guide
1. Device-Specific Power Delivery Network (PDN) Tool 2.0 User Guide x
1.1. Overview 1.2. PDN Decoupling Methodology Review 1.3. PDN Tool Setup and Result Optimization 1.4. Device-Specific PDN Tool 2.0 Known Issues and Their Solutions 1.5. Document Revision History for the Device-Specific Power Delivery Network (PDN) Tool 2.0 User Guide
1.2. PDN Decoupling Methodology Review x
1.2.1. PDN Circuit Topology 1.2.2. Major Tabs of the PDN Tool 2.0 1.2.3. Design PCB Decoupling Using the PDN Tool 2.0 1.2.4. Troubleshooting ZEFF
1.2.1. PDN Circuit Topology x
1.2.1.1. ZTARGET 1.2.1.2. FEFFECTIVE
1.2.2. Major Tabs of the PDN Tool 2.0 x
1.2.2.1. System_Decap 1.2.2.2. Stackup 1.2.2.3. BGA_Via 1.2.2.4. Plane_Cap 1.2.2.5. Cap_Mount 1.2.2.6. X2Y_Mount 1.2.2.7. Library 1.2.2.8. Enlarged_Graph
1.2.2.1. System_Decap x
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
1.2.2.2. Stackup x
1.2.2.2.1. Stackup Data 1.2.2.2.2. Full Stackup
1.2.2.7. Library x
1.2.2.7.1. Two-Terminal Decoupling Capacitors 1.2.2.7.2. Bulk Capacitors 1.2.2.7.3. X2Y Decoupling Capacitors 1.2.2.7.4. BGA Via and Plane Capacitance 1.2.2.7.5. VRM Library 1.2.2.7.6. Spreading R and L Parasitics 1.2.2.7.7. Dielectric Material Library 1.2.2.7.8. User Set FEFFECTIVE
1.2.3. Design PCB Decoupling Using the PDN Tool 2.0 x
1.2.3.1. Pre-Layout Instructions 1.2.3.2. Deriving Decoupling in a Single-Rail Scenario 1.2.3.3. Deriving Decoupling in the Power-Sharing Scenarios
1.2.4. Troubleshooting ZEFF x
1.2.4.1. Strategies for Correcting a High ZEFF
1.3. PDN Tool Setup and Result Optimization x
1.3.1. Setting Up a PCB Stackup 1.3.2. Setting up a Power Group 1.3.3. Optimizing in Pre-Layout 1.3.4. Further Optimizing for Better Accuracy 1.3.5. Correlation
1.3.1. Setting Up a PCB Stackup x
1.3.1.1. Selecting Your Device 1.3.1.2. Inputting Stackup Data
1.3.1.2. Inputting Stackup Data x
1.3.1.2.1. Using a Custom Dielectric Material
1.3.2. Setting up a Power Group x
1.3.2.1. Selecting the Rails 1.3.2.2. Rail Group Summary 1.3.2.3. VRM Impedance 1.3.2.4. BGA Via 1.3.2.5. Calculating Plane 1.3.2.6. Plane Spreading Parasitics 1.3.2.7. FEFFECTIVE and Decoupling Result Summary
1.3.3. Optimizing in Pre-Layout x
1.3.3.1. Checking the Capacitor Model 1.3.3.2. Optimizing the Decap Count
1. Device-Specific Power Delivery Network (PDN) Tool 2.0 User Guide

1.5. Document Revision History for the Device-Specific Power Delivery Network (PDN) Tool 2.0 User Guide

Document Version Changes
2021.08.24 Made the following change:
  • Modified the units used in the Meeting Target Impedance when Entering 0 A into the PDN Tool topic.
2020.10.06 Made the following changes:
  • Added Meeting Target Impedance when Entering 0 mA into the PDN Tool and Dealing with Multiple Shared Power Supply Pin Types topics.
  • Added note to PDN Tool Setup and Result Optimization topic.
2020.08.11 Made the following changes:
  • Added supported Intel® Stratix® 10 FPGA devices.
  • Added VCCRT_GXE, VCCRT_GXP, VCCH_GXE, and VCCH_GXP to "Settings for the Intel® Stratix® 10 Device Power Rails" table.
  • Added a reason for the ZEFF impedance ±5% variation.
  • Added Device-Specific PDN Tool 2.0 Known Issues and Their Solutions.
2018.10.05 Made the following change:
  • Added the "VRM Model" figure.
2018.10.04 Made the following changes:
  • Changed the name of the GUI tab to Imax (Maximum Dynamic Current) in the "Power Rail Data and Configuration Section" section.
  • Updated the "Changing Voltage for All Rails in a Group" figure.
  • Updated the "Power Rail Data and Power Sharing Scheme Section" figure.
  • Added further description for VRM in the "VRM Impedance Section" section.
  • Changed the name of the GUI tab to Imax (Maximum Dynamic Current) in the "Selecting the Rails" section.
2017.11.27
  • Added Setting Up a PCB Stackup
  • Added Setting Up a Power Group
  • Added Optimizing in Pre-layout
  • Added Further Optimizing for Better Accuracy
  • Added Correlation
  • Merged the PCG links
  • Added link to PDN tools
2017.06.05 Made the following changes:
  • Changed the operating systems and platforms in the "PDN Tool 2.0 Software Verification" table.
  • Added the Intel® Cyclone® 10 GX device to the list of supported devices in the "Overview" section.
  • Added links to the Cyclone 10 GX Device Family Pin Connection Guidelines in the "ZTARGET" section.
  • Added links to the Cyclone 10 GX Device Family Pin Connection Guidelines in the "Device Selection Section" section.
  • Removed a step from the "BGA Via Section" section.
2016.12.09 Made the following changes:
  • Added Stratix 10 device information globally.
  • Changed "Die Noise Tolerance" to "Noise Tolerance" globally.
  • Changed the "Settings for the Stratix 10 Device Power Rails" table to display the Stratix 10 specifications.
  • Changed the "Device Selection" figure to show Stratix 10 selections.
  • Changed the "Power Rail Configuration Scheme" figure to show Stratix 10 configurations.
  • Added a cross-reference to the Stratix 10 GX and SX Device Family Pin Connection Guidelines to the "Device Selection Section" topic.
  • Changed "Imax" to "Idynamic" in the "Power Rail Data and Configuration Section" topic.
  • Changed the "Power Rail Data and Power Sharing Scheme Section" figure to show Stratix 10 configurations.
  • Changed " root-mean-square" to " root-sum-square" in the "Power Rail Data and Configuration Section" topic.
  • Changed the "Changing Voltage for All Rails in a Group" figure to show Stratix 10 voltages.
  • Changed the note in the "VRM Data Section" topic.
  • Updated the options for the Current Ramp Up Period in the "Rail Group Summary Section" topic.
  • Changed the "Stackup Tab" figure to show Stratix 10 stackup information.
  • Removed the "Stackup Stub" section.
  • Changed the description of the "Enlarged Plot of ZEFF" figure.
  • Changed the PDN Tool 2.0 calculations in the "Deriving Decoupling in a Single-Rail Scenario" section.
  • Removed the following pessimism removal features from the "Strategies for Correcting a High ZEFF" section:
    • Dynamic current change
    • Die noise tolerance
  • Added definition of ZEFF to the "FEFFECTIVE" section.
  • Added the Ignore option in the "VRM Impedance Section" section.
2016.10.31
  • Clarified the Family/Device, Available Devices, and Power Rail Configuration entry description.
  • Documented a new option to change a rail's voltage without disconnecting it from the regulator group.
  • Clarified the PDN tool's treatment of VRMs with sense lines.
  • Documented the Default option in the BGA Via table.
  • Described how to implement split planes.
2016.06.15

Made the following changes:

  • Changed the description of how FEFFECTIVE is calculated in the "FEFFECTIVE" section.
2015.11.02

Made the following changes:

  • Changed the description in the "Overview" section.
  • Clarified the note in the "ZTARGET" section.
  • Clarified the description in the "FEFFECTIVE" section.
  • Changed the "Device Selection" figure.
  • Changed the "Power Rail Data and Power Sharing Scheme Section" figure.
  • Added a description for current usage of Imax in the "Power Rail Data and Configuration Section" section.
  • Added description to the "Results Summary Section" section.
  • Changed the "Results Summary Section of the System_Decap Tab" figure.
  • Changed the "BGA_Via Tab" figure.
  • Changed the "Plane_Cap Tab" figure.
  • Added description for the Import Plane R&C button in the "Plane_Cap" section.
  • Added description to the "Cap_Mount" section.
  • Changed the "Library Tab" figure.
  • Changed the "Library Tab Fields" figure.
  • Added list of pessimism removal features in the "Strategies for Correcting a High ZEFF" section.
2015.07.06

Made the following changes:

  • Changed the voltage for VCCH_GXB in the "Settings for the Intel® Arria® 10 Device Power Rails" table.
2015.03.06

Made the following changes:

  • Added MAX® 10 to the list of supported devices in the Overview section.
  • Changed the "Device Selection" figure.
  • Clarified options for entering power supply voltage in the Power Rail Data and Configuration Section section.
  • Changed the "Power Rail Data and Power Sharing Scheme Section" figure.
  • Added new parameters and descriptions to the Rail Group Summary Section section.
  • Added a note to the Cap_Mount section.
  • Added the Troubleshooting ZEFF and Strategies for Correcting High ZEFF sections.
2014.09.29
  • Added notes to the "PDN Topology Modeled as Part of the Tool" figure.
  • Added detailed explanation of the options available in the VRM Impedance pull-down menu in the "VRM Impedance Section."
2014.09.12 Initial release.
Level Two Title