Technical Product Specification

Intel® Server System SR1695WB TPS Power Sub-System
Revision 1.4 15
Intel order number: E92079-005
The minimum efficiency at 90~264VAC for the Max load shell be at least 83%.
3.3 DC Voltage Input Specification
Note: This section is suitable only for system inserted DC Power Supply Module.
3.3.1 Input Voltage
The power supply input DC voltage shall be taken to -75Vdc for 1sec. The range is in Table
12.
Table 12. DC Voltage Input Range
Minimum Nominal Maximum Peak
Range 1 -36V -48V -72V -75V
3.3.2 Input Current
The maximum input current shall be 20A for each input voltage range of Table 13.
Table 13. Maximum Input Current
Input Voltage Maximum Input Current Max Power
-36 -- -72VDC 20 – 9A 100A 2u second
3.3.3 DC Line Fuse
The power supply shall incorporate one input fuse on the return fuse on the return side for
input over-current protection to prevent damage to the power supply and meet product
safety requirements. Fuses should be slow blow type or equivalent to prevent nuisance trips.
DC inrush current shall not cause the DC line fuse to blow under any conditions. All
protection circuits in the power supply shall not cause the DC fuse to blow unless a
component in the power supply has failed. This includes DC output load short conditions.
3.3.4 DC Line Inrush
The maximum DC line inrush current shall be 100A peak at an input voltage of -48VDC.
Inrush current shall be measured at an ambient temperature of 25 deg C after the input
voltage has been removed from the power supply for a minimum of 10 minutes.
3.3.5 Brownout
The power supply should withstand a brownout and recover from it without any damage
stated in Table 14:
Table 14. DC Brownout And Recover.
-36 -- -72Vin Shut Down Recover
Full Load -33 +/-1V Vin -35 +/-1V Vin
3.3.6 Efficiency
85% minimum at -48V ~ -72V for the max load.