Data Sheet
Austin MiniLynxTM SMT Non-isolated Power Modules:
February 26, 2009
2.4 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 3A output current
Thermal Considerations
25.4_
(1.0)
Wind Tunnel
PWBs
Power modules operate in a variety of thermal
environments; however, sufficient cooling should
always be provided to help ensure reliable operation.
Powe r Mod ule
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 35. Note that the airflow is
parallel to the long axis of the module as shown in
figure 34. The derating data applies to airflow in
either direction of the module’s long axis.
76.2_
(3.0)
x
Prob e Loc a tio n
for measuring
airflow and
ambient
5.97_
(0.235)
Air Flow
temperature
Air
flow
Figure 35. Thermal Test Set-up.
Tref
Figure 34. T
location.
Temperature measurement
ref
The thermal reference point, Tref used in the
specifications is shown in Figure 34. For reliable
operation this temperature should not exceed 115oC.
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.
LINEAGE POWER
14
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
