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Power Sub-System
1.
12V
must provide 4.0A with two power supplies in parallel. The power supply fan is allowed to run in
STB
standby mode for loads > 1.5A.
2.
Peak combined power for all outputs shall not exceed 1600W (for 1200W PSU) and 2100W (for 1600W PSU)
3.
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.
3.3.2
Standby Output
The 12VSB output shall be present when an AC input greater than the power supply turn on
voltage is applied.
3.3.3
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.
Parameter
+12V
STB
+12V
The combined output continuous power of all outputs shall not exceed 3200W (1600W from
each power supply unit). Each output has a maximum and minimum current rating shown in
below table. The power supply shall meet both static and dynamic voltage regulation
requirements for the minimum dynamic loading conditions. The power supply shall meet only
the static load voltage regulation requirements for the minimum static load conditions.
3.3.4
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.
Output
+12V
STB
+12V
22
Table 20. Voltage Regulation Limits
Min
Nom
+11.40V
+12.000V
+11.40V
+12.000V
Table 21. Transient Load Requirements
∆ Step Load Size
1.0A
60% of max load
Intel order number: G59059-006
®
Intel
Server Chassis H2000 Family TPS
Max
Unit
+12.60V
Vrms
+12.60V
Vrms
Load Slew Rate
0.25 A/µsec
0.25 A/µsec
Tolerance
±5%
±5%
Test capacitive Load
20 µF
2000 µF
Revision 1.5
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