Table 42. Capacitive Loading Conditions - Intel SC5299BRP Technical Product Specification

Power Sub-system
Output
+12V1
+12V2
+5VSB
Notes:
1.
2.
2.2.4.16 Capactive Loading
The power supply is stable and meets all requirements with the following capacitive loading
ranges.
2.2.4.17 Closed Loop Stability
The power supply is unconditionally stable under all line/load/transient load conditions, including
capacitive load ranges. A minimum of 45 degrees phase margin and -10dB-gain margin is
required. Closed-loop stability is ensured at the maximum and minimum loads as applicable.
2.2.4.18 Common Mode Noise
The common mode noise on any output shall not exceed 350mV pk-pk over the frequency band
of 10Hz to 30MHz.
2.2.4.19 Ripple/Noise
The maximum allowed ripple/noise output of the power supply is defined in the following table.
This is measured over a bandwidth of 0 Hz to 20 MHz at the power supply output connectors. A
10 F tantalum capacitor, in parallel with a 0.1 F ceramic capacitor, is placed at the point of
measurement.
38
Step Load Size (see
note 2)
25.0A
25.0A
0.5A
Step loads on each 12V output may happen simultaneously.
The +12V should be tested with 2200 F evenly split between the two +12V rails.

Table 42. Capacitive Loading Conditions

Output MIN
+3.3V 250
+5V 400
+12V(1, 2) 500 each
-12V 1
+5VSB 20
Intel order number D37594-005
®
Intel Entry Server Chassis SC5299-E TPS
Load Slew Rate
0.25 A/ sec
0.25 A/ sec
0.25 A/ sec
MAX
6,800
4,700
11,000
350
350
Test Capacitive Load
1,2
2200 F
1,2
2200 F
20 F
Units
F
F
F
F
F
Revision 3.1