Vol 1
Electrical Specifications
88 Intel® Xeon® Product 2800/4800/8800 v2 Product Family
Datasheet Volume One, February 2014
6.9.2 Die Voltage Validation
Core voltage (V
CC
) overshoot events at the processor must meet the specifications in
Table 6-15 when measured across the VCC_SENSE and VSS_VCC_SENSE lands.
Overshoot events that are < 10 ns in duration may be ignored. These measurements
of processor die level overshoot should be taken with a 100 MHz bandwidth
limited oscilloscope.
Notes:
1. In an IccMax condition, the CPU will respond to reduce the current within 3ms. It will then respond in a step
wise fashion to bring the current down to the Icc dynamic condition.
2. Icc dynamic is not expected to last longer than 10 seconds with a heat sink which meets but does not
significantly exceed the specifications set forth in this document. Current suggested value is 1.2x TDP.
3. Turbo performance may be impacted by failing to meet durations specified in this graph. Ensure that the
platform design can handle peak and average current based on the specification.
4. Processor or voltage regulator thermal protection circuitry should not trip for load currents greater
than I
CC_TDC
.
5. Not 100% tested. Specified by design characterization.
6.9.2.1 V
CC
Overshoot Specifications
The Intel® Xeon® E7 v2 processor can tolerate short transient overshoot events where
V
CC
exceeds the VID voltage when transitioning from a high-to-low current load
condition. This overshoot cannot exceed VID + V
OS_MAX
(V
OS_MAX
is the maximum
allowable overshoot above VID). These specifications apply to the processor die voltage
as measured across the VCC_SENSE and VSS_VCC_SENSE lands.
Figure 6-4. Load Current Versus Time
150.0 A
160.0 A
170.0 A
180.0 A
190.0 A
200.0 A
210.0 A
220.0 A
230.0 A
0.00s 0.01s 0.10s 1.00s 10.00s 100.00s
Ivy Bridge-EX CPU Core Icc vs Duration
Icc Max
Icc dyn
1-3ms, 220A
9ms, 186A
10s, 186A
Icc TDC
155A
Intel® Xeon® Processor E7-8800/4800/2800 v2 Product Family
Core Icc vs Duration
Table 6-15. V
CC
Overshoot Specifications
Symbol Parameter Min Max Units Figure Notes
V
OS_MAX
Magnitude of V
CC
overshoot above VID 65 mV 6-5
T
OS_MAX
Time duration of V
CC
overshoot above VccMAX
value at the new lighter load
25 uS 6-5