E48SR05012NMFA Delta Electronics, E48SR05012NMFA Datasheet - Page 11

• Manufacturer Part Number: E48SR05012NMFA
• Description: MODULE DC/DC 8TH BRICK 5V 12A
• Manufacturer: Delta Electronics
• Series: Delphi E48SRr
• Type: Isolated with UVLOr

Specifications of E48SR05012NMFA

• Operating Temperature: -40°C ~ 121°C
• Power (watts) - Rated: 60W
• Efficiency: 91.5%
• Approvals: CE, cUL, TUV, UL
• Output: 5V
• Number Of Outputs: 1
• Power (watts): 66W
• Mounting Type: Surface Mount
• Voltage - Input: 36 ~ 75V
• Package / Case: 8-DIP SMD Module, 1/8 Brick
• 1st Output: 5 VDC @ 12A
• Size / Dimension: 2.30" L x 0.90" W x 0.33" H (58.4mm x 22.8mm x 8.4mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 2nd Output: -
• 3rd Output: -
• 4th Output: -
• Other names: 941-1049

DS_E48SR05012_05222008
THERMAL CONSIDERATIONS
Thermal management is an important part of the system
design. To ensure proper, reliable operation, sufficient
cooling of the power module is needed over the entire
temperature range of the module. Convection cooling is
usually the dominant mode of heat transfer.
Hence, the choice of equipment to characterize the
thermal performance of the power module is a wind
tunnel.
Thermal Testing Setup
Delta’s DC/DC power modules are characterized in
heated vertical wind tunnels that simulate the thermal
environments
equipment. This type of equipment commonly uses
vertically mounted circuit cards in cabinet racks in which
the power modules are mounted.
The
characterization setup. The power module is mounted
on a test PWB and is vertically positioned within the
wind tunnel. The space between the neighboring PWB
and the top of the power module is constantly kept at
6.35mm (0.25’’).
Figure 20: Wind tunnel test setup
Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches)
MEASURED BELOW
following
TEMPERATURE
AIR VELOCITY
AND AMBIENT
THE MODULE
FACING PWB
encountered
figure
AIR FLOW
shows
in
PWB
50.8 (2.0”)
MODULE
12.7 (0.5”)
the
most
wind
electronics
tunnel
Thermal Derating
Heat can be removed by increasing airflow over the module.
The hottest point temperature of the module is +121°C. To
enhance system reliability; the power module should always
be operated below the maximum operating temperature. If
the temperature exceeds the maximum module temperature,
reliability of the unit may be affected.
THERMAL CURVES
Figure 21: Hot spot temperature measured point.
＊
Figure 22: Output load vs. ambient temperature and air velocity @
V
14
12
10
8
6
4
2
0
in
55
The allowed maximum hot spot temperature is defined at 121
Output Current(A)
=48V(Transverse Orientation)
E48SR05012(Standard) Output Load vs. Ambient Temperature and Air Velocity
60
65
@ Vin = 48V (Transverse Orientation)
Convection
Natural
70
100LFM
75
200LFM
Ambient Temperature (℃)
80
85
℃
11