Altera Power Delivery Network Manuel d'utilisateur télécharger pdf (Page 8)

1–4 Chapter 1: Power Delivery Network (PDN) Tool User Guide

Setting Up the PDN Tool

Power Delivery Network (PDN) Tool User Guide © March 2009 Altera Corporation

For more information on the Decap Selection tab, refer to “Decap Selection Tab” on

page 1–16.

Figure 1–3. Library Tab

Notes to Figure 1–3:

The numbers in Figure 1–3 correspond to the follwing steps 1, 2, 3, 4, 5.

(1) Enter the ESR, ESL, and L

mount

values for the capacitors under the Custom field.

(2) Enter the effective BGA via (loop) parasitics for the power supply being decoupled.

(3) Enter the plane capacitance seen by the power/ground plane pair on the board for the power supply under Plane Cap.

(4) Enter the VRM parasitics, if available, under the Custom row.

(5) Enter the effective spreading inductance seen by the decoupling capacitors in the Custom row.

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Altera Power Delivery Network Manuel d'utilisateur Page 8