System Overview 1-31
Description
Two power supplies provide system power. Redundant power is not available at
this time and each has 450 W output.
Power Supply Features
•
88–132 and 176–264 Vrms AC input
•
450 watts output. Output voltages are as follows:
Output Voltage
Min. Voltage
Max. Voltage
Max. Current
+5.0
4.90
5.25
52
+3.43
3.400
3.465
37.4
+12
11.5
12.6
17
–12
–13.2
–10.9
0.5
–5.0
–5.5
–4.6
0.2
Vaux
4.85
5.25
0.6
•
Remote sense on +5.0V and +3.43V
+5.0V is sensed on the system motherboard.
+3.43V is sensed on all CPUs in the system and the system bus motherboard.
•
Current share on +5.0V, +3.43V, and +12V.
•
1 % regulation on +3.43V.
•
Fault protection (latched). If a fault is detected by the power supply, it will shut
down. The power supply faults detected are:
Fan Failure
Over-voltage
Over-current
Power overload
•
DC_ENABLE_L input signal starts the DC outputs.
•
FAN_FAULT_H input signal shuts the power supply off in case of a system fan
or CPU fan failure.
•
POK_H output signal indicates that the power supply is operating properly.
