NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /6 A Outputs
January 13, 2011
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
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.
25.4_
Wind Tunnel
PWBs
(1.0)
Power Module
76.2_
(3.0)
x
Probe Location
for measuring
airflow and
12.7_
(0.50)
ambient
temperature
Air
flow
Thermal Test Setup
The thermal reference point, Tref, used in the specifications is also shown below. For reliable operation the
temperatures at this point should not exceed 125oC. The output power of the module should not exceed the
rated power of the module (Vo,set x Io,max).
Preferred airflow direction and location of hot-spot of the module (Tref).
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
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BEL [ BEL FUSE INC. ]
