Advance Data Sheet
November 17, 2011
40A Analog Mega DLynx
TM
: Non-isolated DC-DC Power Module
4.5 – 14.4Vdc input; 0.6Vdc to 2Vdc output; 40A output current
Thermal Considerations
Power modules operate in a variety of thermal
environments; however, sufficient cooling should
always be provided to help ensure reliable operation.
Considerations include ambient temperature, airflow,
module power dissipation, and the need for increased
reliability. A reduction in the operating temperature of
the module will result in an increase in reliability. The
thermal data presented here is based on physical
measurements taken in a wind tunnel. The test set-up
is shown in Figure 8. The preferred airflow direction
for the module is in Figure 9.
25.4_
(1.0)
The thermal reference points, T
ref
used in the
specifications are also shown in Figure 9. For reliable
operation the temperatures at these points should not
o
exceed 120 C. The output power of the module should
not exceed the rated power of the module (Vo,set x
Io,max).
Please refer to the Application Note “Thermal
Characterization Process For Open-Frame Board-
Mounted Power Modules” for a detailed discussion of
thermal aspects including maximum device
temperatures.
Wind Tunnel
PWBs
Power Module
76.2_
(3.0)
x
Figure 9. Preferred airflow direction and location of
hot-spot of the module (Tref).
Probe Location
for measuring
airflow and
ambient
temperature
12.7_
(0.50)
Air
flow
Figure 8. Thermal Test Setup.
LINEAGE
POWER
10
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
