MVAD160-125 Datasheet, PDF (5/6 Pages) Murata Power Solutions Inc. – 160W 2 X 4 AC-DC Power Supply Converter

THERMAL CONSIDERATIONS
Conduction Cooling Image (and Preferred Interface Materials)
MVAD160 Series
160W 2" X 4" AC-DC Power Supply Converter
Aluminum Baseplate:
Thickness 2.5 to 3mm
Maximum operating temperature +85°C (measurement point: center on
the back side of baseplate)
Preferred mounting on standoffs: 3.5mm
Isolation sheet or Isolation tape
Preferred materials: thickness 50 to 130um, 94V-0
Thermal Sheet or Thermal Gel:
Preferred Materials:
Type: Sarcon 300G-ae (thickness 3mm, thermal conductivity 1.3W/m·K)
Manufacturer: Fuji Polymer
Type: GEL30 (thermal conductivity 3.5W/m·K)
Manufacturer: Parker
Forced Air Cooling
System thermal management is critical to the performance and reliability of the MVAC series power supplies. Performance derating curves are provided which
can be used as a guideline for what can be achieved in a system configuration with controlled airflow at various input voltage conditions.
The air flow curves are generated using an AMCA 210-99 and ASHRAE 51-1999 compliant wind tunnel with heated inlet air and a controlled CFM providing a
duct test section having a calculated average LFM. A correlation between the test setup and the actual system environment is paramount to understanding what
can be achieved in an actual system. In a power supply of this density, cooling air moving both through the unit as well as around the unit strongly influences
local temperatures. The wind tunnel test setup was constructed to produce a flow with a slight back pressure to induce both flow conditions by providing a small
gap between the power supply and duct walls of 0.5” (13mm). The optimal and characterized airflow direction is from the input connector to the output connec-
tor (see diagram below). The P-Q flow curve for this test setup is also shown below.
13mm [0.5in] all sides
Power Supply
Output Connector
Input Connector
Air Flow
*
64mm [2.5in]
0.0100
P-Q CURVE, DUCTED FLOW
0.0075
Ambient Temperature
Measurement
0.0050
0.0025
0.0000
0
2.5
5
7.5
10
12.5
15
17.5
20
22.5
AIRFLOW-(CFM @ 0.075 lbs/cu ft air density)
hptotwp:e/r/.pmouwreart.am.cuormata.com
MVAD160.A05 Page 5 of 6