Power Subsystem; Power Supply Modules - Intel SR4850HW4 - Server Platform - 0 MB RAM Product Manual

Platform Description

Power Subsystem

The power subsystem consists of the following:

Power supply modules

Plug-in VRM converters
The power distribution board
The power subsystem can be configured with two power supply modules installed for 1+1
redundancy at 220 VAC.
Power Supply Modules
The output rating of the power supply is 1470W when operated between 170VAC and 264VAC. It
is a current-sharing power supply with auto-ranging input. The power supply is approximately
7.75-inches wide by 13.5-inches deep by 1.4-inches high. The power supply modules have
universal AC input with Power Factor Correction (PFC) Distributed Power Supplies (DPS). The
AC input receptacle is an IEC-320 C14.
The power supply has two DC outputs: 12V and 3.3VSB. The 12V main power is distributed
through the server and is converted locally at the point-of-load using either embedded or plug-in
VRM converters. The power supply is capable of power-safe monitoring.
In an N+1 configuration, the 12VDC outputs have active (forced) current sharing. The two
externally enabled outputs have the following maximum ratings:
+12VDC: 121A
+3.3VDCSB: 5A
Each power supply module requires one power cord to supply AC power to the system. When two
power supply modules and two power cords are installed, the system supports (1+1) power cord
redundancy. This feature allows the system to be powered by two separate AC sources. In the 1+1
configuration, the system continues to operate, without interruption, if one of the AC sources fails.
40 Intel® Server Platforms SR4850HW4 & SR4850HW4/M Product Guide