Technical Product Specification

Intel® Server Chassis SC5650 TPS Power Sub-system
Revision 1.2
Intel order number E39531-004
23
Output Δ Step Load Size 1, 2 Load Slew Rate Test Capacitive Load
+5 V 7.0 A
0.25 A/μsec 1000 μF
+12 V 25 A
0.25 A/μsec 2700 μF
+5 VSB 0.5 A
0.25 A/μsec 20 μF
2.1.5.8 Capacitive Loading
The power supply is stable and meets all requirements with the following capacitive loading
ranges.
Table 17. Capacitive Loading Conditions
Output MIN MAX Units
+3.3V 10 12,000
μF
+5V 10 12,000
μF
+12V(1, 2, 3) 500 each 11,000
μF
+12V4 10 500
μF
-12V 1 350
μF
+5VSB 20 350
μF
2.1.5.9 Closed Loop Stability
The power supply is unconditionally stable under all line/load/transient load conditions including
capacitive load ranges in Section 2.1.5.8. A minimum of a 45-degree phase margin and -10dB-
gain margin is required. Closed-loop stability is ensured at the maximum and minimum loads as
applicable.
2.1.5.10 Residual Voltage Immunity in Standby Mode
The power supply is immune to any residual voltage placed on its outputs (typically a leakage
voltage through the system from standby output) up to 500mV. There is neither additional heat
generated nor stressing of any internal components with this voltage applied to any individual
output or all outputs simultaneously. Residual voltage also does not trip the protection circuits
during turn on/off.
The residual voltage at the power supply outputs for a no-load condition does not exceed
100 mV when AC voltage is applied.