Technical Product Specification

Intel® Server Board S1600JP TPS Power Supply Specification Guidelines
2. Length of time peak power can be supported is based on thermal sensor and assertion of the SMBAlert#
signal.
Minimum peak power duration shall be 20 seconds without asserting the SMBAlert# signal at
maximum operating temperature.
10.2.2
Standby Output
The standby output shall be present when an AC input greater than the power supply turn on
voltage is applied. There should be load sharing in the standby rail.
10.2.3
Voltage Regulation
The power supply output voltages must stay within the following voltage limits when operating at
steady state and dynamic loading conditions.
These limits include the peak-peak ripple/noise.
These shall be measured at the output connectors.
Table 89. 750W Voltage Regulation Limits
Parameter
Tolerance
Min
Nom
Max
Units
+12V
- 5%/+5%
+11.40
+12.00
+12.60
V
rms
+12V stby
- 5%/+5%
+11.40
+12.00
+12.60
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 following table.
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 90. 750W Transient Load Requirements
Output
∆ Step Load Size
Load Slew Rate
Test capacitive Load
+12VSB
1.0A
0.25 A/sec
20 F
+12V
60% of max load
0.25 A/sec
2000 F
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 91. 750W Capacitive Loading Conditions
Output
MIN
MAX
Units
+12VSB
20
3100
F
+12V
500
25000
F
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.
Revision 1.9 177