Standby Output; Voltage Regulation; Dynamic Loading; Capacitive Loading - Intel S2600KPFR Product Specifications

Technical Product Specification
2. 12Vstby must be able to provide 4.0A peak load with single power supply. The power supply fan is allowed
to run in standby mode for loads > 1.5A.
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. The
peak load requirement should apply to full operating temperature range.
4. The setting of IPeak < IOCW < IOCP needs to be followed to make the CLST work reasonably.
5. Power supply must protect itself in case system doesn't take any action to reduce load based on SMBAlert#
signal asserting.
6. The power supply shall support 25msec peak power at 20% duty cycle step loading for an average current
at the current rating.

13.2.2 Standby Output

The 5VSB (12VSB for the 2130W PSU) 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.

13.2.3 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.
Parameter
+12V
+5V stby
+12V stby (2130W)

13.2.4 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 5 kHz 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
+5VSB
+12VSB
+12V
Note: For dynamic condition +12V min loading is 1A.

13.2.5 Capacitive Loading

The power supply shall be stable and meet all requirements with the following capacitive
loading ranges.
Revision 1.37

Table 72. Voltage Regulation Limits

Tolerance
- 5%/+5%
- 5%/+5%
- 5%/+5%

Table 73. Transient Load Requirements

 Step Load Size
1.0A
0.25 A/sec
1.0A 0.25 A/sec
60% of max load 0.25 A/sec
Power Supply Specification Guidelines
Min Nom
+11.40 +12.00 +12.60
+4.75 +5.00 +5.25
+11.40 +12.00 +12.60
Load Slew Rate Test capacitive Load
20 F
20 F
2000 F
Max Units
V
rms
V
rms
V
rms
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