Intel DH57JG Product Specification - Page 53

Electrical Considerations

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Technical Reference 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 87 W TDP processor (see Section 1.4 on page 14 for information on supported processors), up to 8 GB DDR3 memory, integrated graphics, one hard disk drive, one optical drive, and all board peripherals enabled, the minimum recommended power supply is about 260 W with current ratings as listed in Table 28. Table 28. Recommended Power Supply Current Values Output Voltage 3.3 V 5 V 12 V1 12 V2 -12 V Current 12 A 18 A 14 A 16 A 0.3 A 5 VSB 2 A NOTE +12 V1 denotes the 12 V rail at the 2 x 12 power connector. +12 V2 denotes the 12 V rail at the 2 x 2 power connector. For information about Selecting an appropriate power supply Refer to http://www.intel.com/support/motherboards/desktop/sb/C S-026472.htm 53

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Technical Reference
53
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 87 W TDP processor (see
Section 1.4 on page 14 for information on supported processors), up to 8 GB DDR3
memory, integrated graphics, one hard disk drive, one optical drive, and all board
peripherals enabled, the minimum recommended power supply is about 260 W with
current ratings as listed in Table 28
.
Table 28.
Recommended Power Supply Current Values
Output Voltage
3.3 V
5 V
12 V1
12 V2
-12 V
5 VSB
Current
12 A
18 A
14 A
16 A
0.3 A
2 A
NOTE
+12 V1 denotes the 12 V rail at the 2 x 12 power connector.
+12 V2 denotes the 12 V rail at the 2 x 2 power connector.
For information about
Refer to
Selecting an appropriate power supply
S-026472.htm