UQQ-12 Datasheet, PDF (18/18 Pages) Murata Manufacturing Co., Ltd. – Wide Input Range Single Output DC-DC Converters

IR Transparent
optical window
IR Video
Camera
Unit under
test (UUT)
Precision
low-rate
anemometer
3” below UUT
Ambient
temperature
sensor
Airflow
collimator
Figure 9. Vertical Wind Tunnel
UQQ Series
Wide Input Range Single Output DC-DC Converters
Vertical Wind Tunnel
Variable
speed fan
Murata Power Solutions employs a computer controlled custom-
designed closed loop vertical wind tunnel, infrared video camera
system, and test instrumentation for accurate airflow and heat dis-
sipation analysis of power products. The system includes a precision
low flow-rate anemometer, variable speed fan, power supply input
and load controls, temperature gauges, and adjustable heating ele-
ment.
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.
Heating
element
Both through-hole and surface mount converters are soldered down
to a 10" x 10" host carrier board for realistic heat absorption and
spreading. Both longitudinal and transverse airflow studies are pos-
sible by rotation of this carrier board since there are often significant
differences in the heat dissipation in the two airflow directions. The
combination of adjustable airflow, adjustable 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 airflow turbulence. Such turbulence influences 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.
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
www.murata-ps.com/support
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. Specifications are subject to change without
notice.
© 2013 Murata Power Solutions, Inc.
MDC_UQQ.D03 Page 18 of 18