PDF《Voltage Regulator Module (VRM) and》

17 2.7.1 Power-Off Timing Sequence C REQUIRED

18 2.8 Dynamic Voltage Identification (dVID) C REQUIRED

18 2.9 Overshoot at Turn-On or Turn-Off C REQUIRED

20 2.10 VR Vcc Under-Voltage Lockout (UVLo) C EXPECTED.20 2.11 Output Filter Capacitance C REQUIRED.21

3 Input Voltage and Current

23 3.1 Input Voltages C EXPECTED

23 3.2 Load Transient Effects on Input Current C EXPECTED

23 4 Vcc Output Voltage Protection

25 4.1 Over-Voltage Protection (OVP) C EXPECTED.25 4.2 Over-Current Protection (OCP) C EXPECTED.25

5 Control Input Signals.27 5.1 I/O Signals Overview

27 5.2 Output Enable (OUTEN) C REQUIRED

27 5.3 Voltage Identification VID [7:0] C REQUIRED

28 5.3.1 Power-On Configuration (POC) Signals on VIDs (For Reference Only)29 5.4 Power State Indicator (PSI#) C EXPECTED (2)

30 5.5 Differential Remote Sense (VO_SEN+/-) C REQUIRED

34 5.6 PMBus* Support for Servers or Work Stations C Optional

35 6 Indicator Output Signals

37 6.1 Voltage Regulator Ready (VR_Ready) C REQUIRED

37 6.2 Voltage Regulator Hot (VR_hot#) C EXPECTED

37 6.3 Advanced Thermal Warning (VR_Fan#)- PROPOSED

38 6.4 Load Current Monitor (IMON) C EXPECTED.38 6.5 VRM Present (VRM_Pres#x) Signals C PROPOSED

41 7 VRM C Mechanical Guidelines.43 7.1 VRM Connector C EXPECTED

43 7.2 VRM (Tyco/Elcon) Connector Keying

43 7.2.1 Connector Keying

43 7.2.2 Connector Pin

1 Orientation

43 7.3 Pin Descriptions and Assignments.43 7.3.1 VRM11.1 Electrical Keying C PROPOSED

45 7.4 Mechanical Dimensions C PROPOSED

46 7.4.1 Gold Finger Specification

46 8 Environmental Conditions.49 8.1 Operating Temperature C PROPOSED

49 8.1.1 Thermal Drift Bench Test C Proposed

49 8.2 VRM Board Temperature C REQUIRED

49 4 V........