Datasheet

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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. Specifi cations are subject to change without
notice. © 2016 Murata Power Solutions, Inc.
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfi 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/
UEE 150W Series
Isolated, High-Density, Eighth-Brick
DOSA Low Profi le DC-DC Converters
MDC_UEE 150W_Series.A02 Page 35 of 35
Figure 12. Vertical Wind Tunnel
IR Video
Camera
IR Transparent
optical window
Variable
speed fan
Heating
element
Ambient
temperature
sensor
Airflow
collimator
Precision
low-rate
anemometer
3” below UUT
Unit under
test (UUT)
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 airfl ow and
heat dissipation analysis of power products. The system includes
a precision low fl 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-
tion and spreading. Both longitudinal and transverse airfl ow
studies are possible by rotation of this carrier board since there
are often signifi cant differences in the heat dissipation in the two
airfl ow directions. The combination of adjustable airfl 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 airfl ow turbulence. Such turbulence
infl 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.