Power Supply And Cooling; Power Output And Cooling; Power Supply Specifications - HP xw4300 Service And Technical Reference Manual

1.4

Power Supply and Cooling

This section contains the following information:
• Section 1.4.1 "Power Output and Cooling"
• Section 1.4.2 "Power Supply Specifications"
• Section 1.4.3 "Power Consumption and Cooling"
• Section 1.4.4 "System Fans and Airflow"
• Section 1.4.5 "Resetting the Power Supply"

1.4.1 Power Output and Cooling

The HP xw4300 Workstation power supply contains seven outputs:
• +3.3V—used with PCI, PCI Express, Audio, CK-410, ICH7R, Super I/O, BIOS ROM, and on-board logic
• +5V—used with storage (disk, optical, 3.5-inch diskette), PCI, PCI Express, ICH7R, Audio, Keyboard/Mouse,
USB, input to on-board regulators (1.2V, 1.5V, 1.8V), and on-board logic
• +12V-A—used with PCI, PCI Express, and system fans
• +12V-B—used with storage (disk, optical, 3.5-inch diskette, graphics dongle)
• +12VCPU—input to on-board regulator that supplies power for CPU
• -12V—used by PCI
• 5VSB—used for sleep circuitry
Table 1-5 Max Current per Rail
Voltage Rail
3.3V
5V
12VCPU
12V-A
12V-B
V12N
5VSB
WARNING! Do not exceed 110W of a 5V and 3.3V power combination.
WARNING! Do not exceed 31.5A (378W) of 12V (CPU/A/B) power combination.
WARNING! Do not exceed 460W of total continuous output power.

1.4.2 Power Supply Specifications

The following table lists the power supply specifications.
Table 1-6 Power Supply Specifications
Full Ranging Input (No Line Select Switch)
Active Power Factor Correction (APFC)
(Input Current is nearly 1/2 a non-APFC PS)
Passive Power Factor Correction (PFC)
Operating Voltage Range
Rated Voltage Range
Rated Line Frequency
Operating Line Frequency Range
Rated Input Current
Maximum Rated Power
18 Product Overview
Maximum Continuous Current
15.0V
21.0V
15.0V
10.0V
11.0V
0.3V
2.0V
Yes
Yes
No
90 to 264VAC/118VAC
100 to 240VAC
50 to 60Hz/400Hz
47 to 66Hz/393 to 407Hz
7.4A/7.4A
460W