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

ID 683293
Date 8/24/2021
Public
Document Table of Contents

1.2.2.1.8. BGA Via Section

The BGA Via table shows the L and R values per via. You can set the tool to Calculate, Custom, Default, or Ignore. For a fully customized workflow in which each rail group can have different settings, set the total effective R and L values in the BGA Via section to match your system.

If you set the BGA Via table to Calculate or Ignore, the System_Decap tab uses the same global settings for all rail groups.

If you set the BGA Via table to Default, the PDN tool calculates the R and L values similarly to the Calculate option, however, the tool also calculates the number of power/ground via pairs based on the rails connected to the regulator group. You can input the layer number in the tool. The layer number should match the target layer in Full Stackup. Then, BGA via R and L is calculated corresponding to the layer number.
Figure 9. Setting the Layer Number