DG45FC Datasheet, PDF (56/88 Pages) Intel Corporation – Technical Product Specification

Intel Desktop Board DG45FC Technical Product Specification
2.5 Electrical Considerations
2.5.1 Power Supply Considerations
CAUTION
The +5 V standby line from the power supply must be capable of providing adequate
+5 V standby current. Failure to do so can damage the power supply. The total
amount of standby current required depends on the wake devices supported and
manufacturing options.
Additional power required will depend on configurations chosen by the integrator.
The power supply must comply with the indicated parameters of the ATX form factor
specification.
• The potential relation between 3.3 VDC and +5 VDC power rails
• The current capability of the +5 VSB line
• All timing parameters
• All voltage tolerances
For example, for a system consisting of a supported 65 W multi-core processor (see
Section 1.4 on page 14 for a list of supported processors), 512 MB DDR2 RAM, one
hard disk drive, one optical drive, and all onboard peripherals enabled, the minimum
recommendation is a Plus 80 150 W power supply. This will help facilitate reaching a
Category A Energy Star configuration idle power level. Table 25 lists the recommended
power supply current values.
Table 26. Recommended Power Supply Current Values
Output Voltage
3.3 V
5V
12 V1
12 V2
Current
14 A
8A
8A
8A
-12 V
0.3 A
5 VSB
2.0 A
For example, for a system consisting of a supported 65 W processor (see Section 1.4
on page 14 for a list of supported processors), 1 GB DDR2 RAM, one hard disk drive,
one optical drive, and all onboard peripherals enabled, the minimum recommendation
is a Plus 80 250 W power supply. This will help facilitate reaching a Category B Energy
Star configuration idle power level. Table 27 lists the recommended power supply
current values.
Table 27. Recommended Power Supply Current Values
Output Voltage
3.3 V
5V
12 V1
12 V2
Current
14 A
12 A
10 A
10 A
-12 V
0.3 A
5 VSB
2.5 A
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