Intel
®
Entry Server Chassis SC5299-E TPS Power Sub-system
Revision 3.1
Intel order number D37594-005
53
Table 58. Power Supply Module Load Ratings
2.3.3.5 Standby Output
The 5VSB output is present when an AC input greater than the power supply turn-on voltage is
applied.
2.3.3.6 Voltage Regulation
The power supply output voltages stay within the following voltage limits when operating at
steady state and dynamic loading conditions. These limits include the peak-peak ripple/noise
specified in Table 61. All outputs are measured with reference to the GND. The +12V and
+5VSB outputs are measured at the power distribution board output harness connector.
Table 59. Voltage Regulation Limits
Parameter Tolerance MIN NOM MAX Units
+ 12V - 5%/+5% +11.40 +12.00 +12.60 V
rms
+ 5VSB - 5%/+5% +4.75 +5.00 +5.25 V
rms
2.3.3.7 Dynamic Loading
The output voltages remain within limits specified for the step loading and capacitive loading
presented in the following table. The load transient repetition rate has been tested between 5
Hz 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 between the MIN load and MAX load
defined in the following table.
Table 60. Transient Load Requirements
Output Max Step Load Size Max Load Slew Rate Test Capacitive Load
12V 3.0 A
1
0.5 A/ s 2200 F
+5VSB 0.5 A
0.5 A/ s 20 F
Notes:
1. Step loads on each 12V output may happen simultaneously.
2. The +12V should be tested with 2200 F evenly split between the three +12V rails.
650-W Voltage
Min Max Peak
+12 V 0 A 54 A 58 A
+5 VSB 0.1 A 3.0 A 3.5 A
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