Intel D845PEMY Product Specification - Page 53

Thermal Considerations

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Technical Reference 2.11.4 Power Supply Considerations CAUTION The +5 V standby line for 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. System integrators should refer to the power usage values listed in Table 30 when selecting a power supply for use with the Desktop Board D845PEMY. Additional power required will depend on configurations chosen by the integrator. The power supply must comply with the following recommendations found in the indicated sections of the ATX form factor specification: • The potential relation between 3.3 VDC and +5 VDC power rails (Section 4.2) • The current capability of the +5 VSB line (Section 4.2.1.2) • All timing parameters (Section 4.2.1.3) • All voltage tolerances (Section 4.2.2) 2.12 Thermal Considerations CAUTION Ensure that the ambient temperature does not exceed the Desktop Board's maximum operating temperature. Failure to do so could cause components to exceed their maximum case temperature and malfunction. For information about the maximum operating temperature, see the environmental specifications in Section 2.14. CAUTION Ensure that proper airflow is maintained in the processor voltage regulator circuit. Failure to do so may result in damage to the voltage regulator circuit. The processor voltage regulator area (item A in Figure 13) can reach a temperature of up to 85 oC in an open chassis. 53

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Technical Reference
53
2.11.4
Power Supply Considerations
CAUTION
The +5 V standby line for 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.
System integrators should refer to the power usage values listed in Table 30 when selecting a power
supply for use with the Desktop Board D845PEMY.
Additional power required will depend on configurations chosen by the integrator.
The power supply must comply with the following recommendations found in the indicated
sections of the ATX form factor specification:
•
The potential relation between 3.3 VDC and +5 VDC power rails (Section 4.2)
•
The current capability of the +5 VSB line (Section 4.2.1.2)
•
All timing parameters (Section 4.2.1.3)
•
All voltage tolerances (Section 4.2.2)
2.12 Thermal Considerations
CAUTION
Ensure that the ambient temperature does not exceed the Desktop Board’s maximum operating
temperature.
Failure to do so could cause components to exceed their maximum case temperature
and malfunction.
For information about the maximum operating temperature, see the
environmental specifications in Section 2.14.
CAUTION
Ensure that proper airflow is maintained in the processor voltage regulator circuit.
Failure to do
so may result in damage to the voltage regulator circuit.
The processor voltage regulator area
(item A in Figure 13) can reach a temperature of up to 85
o
C in an open chassis.