Technical Product Specification

Intel
®
Server Board S2600WP TPS Power Supply Specification Guidelines
Table 93. Voltage Regulation Limits
Parameter
Tolerance
Min
Nom
Max
Units
+12V
- 5%/+5%
+11.40
+12.00
+12.60
V
rms
+5V stby
- 5%/+5%
+4.75
+5.00
+5.25
V
rms
10.2.4
Dynamic Loading
The output voltages shall remain within limits specified for the step loading and capacitive
loading specified in the table below.
The load transient repetition rate shall be tested between
50Hz and 5kHz at duty cycles ranging from 10%-90%.
The load transient repetition rate is only a
test specification.
The ∆ step load may occur anywhere within the MIN load to the MAX
load conditions.
Table 94. Transient Load Requirements
Output
∆ Step Load Size
Load Slew Rate
Test capacitive Load
+5VSB
1.0A
0.25 A/µsec
20 µF
+12V
60% of max load
0.25 A/µsec
2000 µF
Note: For dynamic condition, +12V min loading is 1A.
10.2.5
Capacitive Loading
The power supply shall be stable and meet all requirements with the following capacitive
loading ranges.
Table 95. Capacitive Loading Conditions
Output
MIN
MAX
Units
+5VSB
20
3100
µF
+12V
500
25000
µF
10.2.6
Grounding
The output ground of the pins of the power supply provides the output power return path. The
output connector ground pins shall be connected to the safety ground (power supply enclosure).
This grounding should be well designed to ensure passing the max allowed Common Mode
Noise levels.
The power supply shall be provided with a reliable protective earth ground. All secondary
circuits shall be connected to protective earth ground. Resistance of the ground returns to
chassis shall not exceed 1.0 mΩ. This path may be used to carry DC current.
10.2.7
Closed loop stability
The power supply shall be unconditionally stable under all line/load/transient load conditions
including specified capacitive load ranges.
A minimum of 45 degrees phase margin and 10dB-
gain margin is required.
Closed-loop stability must be ensured at the maximum and minimum
loads as applicable.
10.2.8
Residual Voltage Immunity in Standby mode
The power supply should be immune to any residual voltage placed on its outputs (typically a
leakage voltage through the system from standby output) up to 500mV. There shall be no
Revision 1.6 Intel order number G44057-007
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