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UEE Series
Isolated, High-Density, Eighth-Brick
DOSA Low Pro?le DC-DC Converters
Vertical Wind Tunnel
Murata Power Solutions employs a computer controlled
custom-designed closed loop vertical wind tunnel, infrared video
camera system, and test instrumentation for accurate air?ow and
IR Transparent
optical window
IR Video
Camera
Unit under
test (UUT)
Variable
speed fan
heat dissipation analysis of power products. The system includes
a precision low ?ow-rate anemometer, variable speed fan, power
supply input and load controls, temperature gauges, and adjust-
able heating element.
The IR camera monitors the thermal performance of the Unit
Under Test (UUT) under static steady-state conditions. A special
optical port is used which is transparent to infrared wavelengths.
Both through-hole and surface mount converters are soldered
down to a 10" x 10" host carrier board for realistic heat absorp-
Precision
low-rate
anemometer
3” below UUT
Ambient
temperature
sensor
Air?ow
collimator
Heating
element
tion and spreading. Both longitudinal and transverse air?ow
studies are possible by rotation of this carrier board since there
are often signi?cant differences in the heat dissipation in the two
air?ow directions. The combination of adjustable air?ow, adjust-
able ambient heat, and adjustable Input/Output currents and
voltages mean that a very wide range of measurement conditions
can be studied.
The collimator reduces the amount of turbulence adjacent
to the UUT by minimizing air?ow turbulence. Such turbulence
in?uences the effective heat transfer characteristics and gives
false readings. Excess turbulence removes more heat from some
surfaces and less heat from others, possibly causing uneven
overheating.
Both sides of the UUT are studied since there are different thermal
gradients on each side. The adjustable heating element and fan, built-in
temperature gauges, and no-contact IR camera mean that power supplies
are tested in real-world conditions.
Figure 14. Vertical Wind Tunnel
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mans?eld, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
This product is subject to the following operating requirements
and the Life and Safety Critical Application Sales Policy:
Refer to: http://www.murata-ps.com/requirements/
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Speci?cations are subject to change without
notice.
? 2013 Murata Power Solutions, Inc.
www.murata-ps.com/support
MDC_UEE_Series.C01 Page 29 of 29
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