Voltage Regulator-Down (VRD) 10.0

Processor Voltage Requirements
R
30 VRD Design Guide
Table 12. D-VID Validation Summary Table
Parameter Minimum Typical Maximum
VID 0.8375 V - 1.6000 V
Voltage Transition 0.7575 V 0.7625 V 0.7675 V
Transition Time - - 350µs
1
Current Load 5A - VR TDC
2
NOTES:
1. Time is measured from 0.4V on rising edge of the first D-VID code to the convergent Vcc voltage value
after the final D-VID code is transmitted.
2. Consult Table 4 for definition of VR TDC
2.9 Processor Vcc Overshoot (REQUIRED)
2.9.1 Specification Overview
Intel desktop processors in socket 478 are capable of tolerating short transient overshoot events
above VID on the Vcc supply that will not impact processor lifespan or reliability. Maximum
processor Vcc overshoot, V
OS
, cannot exceed VID+V
OS
-
MAX.
Overshoot duration, T
OS
,
cannot stay above VID for a time more than T
OS
-
MAX.
See Table 13
and
Table 14
for details.
Table 13. Vcc Overshoot Terminology
Parameter Definition
VOS Measured peak overshoot voltage
V
OS
-
MAX
Maximum specified overshoot voltage allowed above VID
T
OS
Measured overshoot time duration
T
OS
-
MAX
Maximum specified overshoot time duration above VID
Vzc Zero current voltage: The voltage where the measured loadline intercepts the voltage axis
Vzco Vzco = VID – Vzc.
Table 14. Vcc Overshoot Specifications
Parameter Specification
VOS_MAX 50 mV
TOS_MAX 25 µs
VOS Maximum = VID + VOS_MAX
TOS Maximum = TOS_MAX