APXK004A0X-SRZ_10 Datasheet, PDF (19/25 Pages) Lineage Power Corporation – 16V Pico TLynxTM 4A: Non-Isolated DC-DC Power Modules

Data Sheet
September 13, 2010
16V Pico TLynx^TM 4A: Non-isolated DC-DC Power Modules
8 – 16Vdc input; 0.6Vdc to 8.0Vdc output; 4A 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 60. The preferred airflow
direction for the module is in Figure 61.
Wind Tunnel
PWBs
25.4_
(1.0)
Power Module
Figure 61. Preferred airflow direction and location
of hot-spot of the module (Tref).
76.2_
(3.0)
x
12.7_
(0.50)
Air
flow
Probe Location
for measuring
airflow and
ambient
temperature
Figure 60. Thermal Test Setup.
The thermal reference points, T_ref used in the
specifications are also shown in Figure 60. For
reliable operation the temperatures at these points
should not exceed 120^oC. 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
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