Superdome Servers - I/O Expansion Cabinet Guide, Fifth Edition

Appendix A
System Specifications
Electrical Specifications
198
XPC
The XPC accepts one or two AC inputs as shown in Figure A-4
Figure A-4 AC Connections on XPC
DC Power Requirements
Each BPS is capable of 48VDC at 2800W and 5.3VDC at 65W. The 48-volt supply is referred to as PS1 and
5.3-volt supply is referred to as PS2 or 5VHK. The BPSs uses an internal schottky diode in each output in
order to isolate a failed output from the XPC output voltage bus.
Table A-6 BPS DC Output Specifications
Requirement PS1 PS25VHK Comments / Conditions
Output Voltage Setting (nominal VDC) 48.0 +/- 0.1 5.3 +/- 0.05
Output Current-ADC min. 0 0
Output Current-ADC nominal 58.4 12.3
Output Power (watts rms min.) 2800 65 Continuous duty, with fan inlet
air temperature at +35 °C.
Remote On/Off Yes No PS1 is enabled by control signal
PS_CTL_L
Active Current Sharing Differential (% of
full load maximum)
+/-8 +/-8 Typically +/- 5% for PS1 and
PS2. Using either Forced or
Output Slope method.
Remote Sensing Yes Yes
Remote Sense Voltage Drop (VDC
Maximum)
0.5 0.15