rtd ATX104HR-EXPRESS, Руководство пользователя

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ATX104HR-EXPRESS
User’s Manual
ATX104HR-EXPRESS 19 RTD Embedded Technologies, Inc.
Output power calculations
The maximum available power for the +5V computer system can be estimated
using the following method:
5V efficiency 91%
5V STDBY efficiency 82%
3.3V efficiency 89%
12V efficiency 90%
-12V efficiency 88%
All loads are in Watts
L1 = 5V primary load (load on just 5V supply)
L2 = 3.3V load
L3 = 12V load
L4 = -12V primary load (load on just -12V supply)
L7 = 5V total load = L1 + (L3/0.9) + (L6/0.88)
L
TOTAL
= L2 + L7
L
TOTAL
< 83 Watts
L
STDBY
< 5 Watts
Note: Even though the total output power figure of 88 Watts is not exceeded one
must remember not to overload an individual output! Care must be taken
not to thermally overload the unit. The maximum specified output power
may not be available if the ambient temperature rises, and in this case
additional heat sinking or additional airflow may be necessary. Even though
the unit can stay cooled with natural convection, enclosing the unit in a
container may require heat sinking depending on the load and temperature
in the container.