Voltage Regulator-Down (VRD) 10.0

6 VRD Design Guide

Revision History

Revision

Number

Description Revision Date

-001 • Initial Release. April 2003

-002 • Corrected load line formula in Section 2.2. November 2003

-003 • Added Section 1.1 Terminology and Table 2. Glossary.

• Section 2.2 added Tables 3 – 5, 10; modified Tables 6 – 9 and

Figures 1 –4.

• Added Section 2.3 TOB: Tolerance Band.

• Renumbered Sections 2.4 – 2.10 to Sections 2.5 – 2.11

• Added Section 2.8.1 Validation summary, Figures 10 – 11

• Added Section 2.9.1 Specification Overview and Figures 12 – 14.

• Added 2.9.2 Example: Socket Vcc Overshoot Test

• Modified Section 2.10

• Modified Section 4.2

• Modified Section 6.2

• Added Section 8 Motherboard Power Plane Recommendations

• Added Section 8.1 Minimize Power Path Resistance

• Added Section 8.2 Minimize Power Delivery Inductance

• Added Section 8.3 Four Layer Boards

• Added Section 8.4 Six Layer Boards

February 2004