Electrical Considerations; Dc Loading; Pci Express Add-In Connector Considerations; Dc Loading Characteristics Mode - Intel EP80579 User Manual

Technical Reference—Intel
4.10
4.10.1
Table 30.
4.10.2
October 2008
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EP80579 Integrated Processor with Intel

Electrical Considerations

DC Loading

Table 30 lists the DC loading characteristics of the Intel
This data is based on DC analysis of all the active components within the Intel
EP80579 Development Board that impact its power delivery subsystems. The analysis
does not include PCI Express add-in cards.
Minimum load values assume a light load placed on the Intel
Board that is similar to an environment with basic OS (operating system), idled at the
platform, and no applications running.
Maximum load values in Table 30
with four add-on network cards via PCIe and onboard network ports all transferring
files. Also Burn in program was running with multiple instances of memory test
running.
The values are not based on specific SKU or memory configurations, but are based on
the minimum and maximum current draw possible from power delivery subsystem to
processor, memory and external interfaces.
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See the Intel EP80579 Integrated Processor Product Line Datasheet for the overall
system power requirements of the add-in cards. The selection of power supply at the
system level is dependent on the system's usage model and not necessarily tied to a
particular SKU of the EP80579 Processor.

DC Loading Characteristics Mode

Voltage Rails
DC Current
(Amps)
Minimum
Loading
Power
(Watts)
DC Current
(Amps)
Maximum
Loading
Power
(Watts)

PCI Express Add-in Connector Considerations

®
The Intel EP80579 Development Board is designed to provide 2 amps (average
current drain) to each add-in connector, for both the +3.3V and +12V supplies. The
maximum current drawn by the add-in connector for a fully loaded board (all five PCIe
connectors filled) must not exceed 10A for both the +3.3V and +12V supplies.
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QuickAssist Technology
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indicate the Intel
+3.3 V +5 V +12 V
2.98 3.72 1.23
10.1 19.4 14.6
5.31 5.46 1.26
17.8 28.4 15.3
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EP80579 Development Board.
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EP80579 Development
EP80579 Development Board runs
-12 V +5 VSB
0 .75
0 3.7
.03 1.15
0.5 5.8
Development Kit User's Guide
Order Number: 320067-002US
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47