Intel® Server Board S1200SP Family Technical Product Specification
97
Notes:
1. 12Vstby must provide 4.0A with two power supplies in parallel. The Fan may start to work when STBY
current >1.5A
2. Peak combined power for all outputs shall not exceed 575W.
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 at
maximum operating temperature.
12.1.2 Standby Output
The 12VSB 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. And two PSU modules should be able to support 4A standby
current.
12.1.3 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 55. Voltage Regulation Limits
12.1.4 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 56. Transient Load Requirements
Note: For dynamic condition +12V min loading is 1A.
12.1.5 Capacitive Loading
The power supply shall be stable and meet all requirements with the following capacitive loading ranges.
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