VRM 9.1 DC-DC Converter Design Guidelines
Table Of Contents
- 1 Electrical Specifications
- 1.1 Output Requirements
- 1.1.1 Voltage and Current - REQUIRED
- 1.1.2 Maximum Ratings - EXPECTED
- 1.1.3 Output Voltage Tolerance - REQUIRED
- 1.1.4 No-Load Operation - REQUIRED
- 1.1.5 Turn-on Response Time - EXPECTED
- 1.1.6 Overshoot and Undershoot at Turn-On or Turn-Off - REQUIRED
- 1.1.7 Converter Stability - REQUIRED
- 1.1.8 Current Sharing - REQUIRED
- 1.2 Input Voltage and Current
- 1.3 Control Inputs - REQUIRED
- 1.4 Remote Sense (VO-sen+, VO-sen-) - EXPECTED
- 1.5 Power Good Output (PWRGD) - REQUIRED
- 1.6 VRM Present (VRM-pres) - EXPECTED
- 1.7 Efficiency - PROPOSED
- 1.8 Isolation - PROPOSED
- 1.9 Fault Protection
- 1.1 Output Requirements
- 2 Module Layout Guidelines
- 3 Environmental Conditions
- 3.1 Operating Temperature - PROPOSED
- 3.2 VRM Board Temperature - REQUIRED
- 3.3 Non-Operating Temperature - PROPOSED
- 3.4 Humidity - PROPOSED
- 3.5 Altitude - PROPOSED
- 3.6 Electrostatic Discharge - PROPOSED
- 3.7 Shock and Vibration - PROPOSED
- 3.8 Electromagnetic Compatibility - PROPOSED
- 3.9 Reliability - PROPOSED
- 3.10 Safety - PROPOSED
4 VRM 9.1 DC-DC Converter Design Guidelines
Figures
1-1 VRM 9.1 Regulation Requirement for Intel
®
Xeon™ Processor (VID = 1.7 V) ................... 9
1-2 VRM 9.1 Regulation Requirement for Intel
®
Xeon™ Processor with
512 KByte L2 Cache (VID = 1.5 V) ..................................................................................... 9
1-3 VRM 9.1 Regulation Requirement for 64-bit Intel
®
Xeon™ Processor MP
Cache (VID = 1.125 V)...................................................................................................... 10
1-4 VRM 9.1 Regulation Requirement for 64-bit Intel
®
Xeon™ Processor MP
Cache (VID = 1.1275 V).................................................................................................... 10
2-1 VRM Footprint and Space Requirements ......................................................................... 21
Tables
1-1 VRM 9.1 Current Requirements.......................................................................................... 7
1-2 Intel
®
Xeon™ Processor VRM Regulation Requirements................................................. 11
1-3 64-bit Intel
®
Xeon™ Processor MP, VRM Regulation Requirements ............................... 12
1-4 Voltage Identification (VID) ............................................................................................... 15
2-1 Connector Part Numbers and Descriptions....................................................................... 19
2-2 VRM Pins .......................................................................................................................... 20