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NE12S0A0H10PNFA датащи(PDF) 9 Page - Delta Electronics, Inc.

номер детали NE12S0A0H10PNFA
подробное описание детали  Voltage Margining Adjustment
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производитель  DELTA [Delta Electronics, Inc.]
домашняя страница  http://www.deltaww.com
Logo DELTA - Delta Electronics, Inc.

NE12S0A0H10PNFA датащи(HTML) 9 Page - Delta Electronics, Inc.

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DS_NE12S10A_07092013
9
THERMAL CURVES (NE12S0A0V10)
Figure 25: Temperature measurement location* The allowed
maximum hot spot temperature is defined at 109
NE12S0A0V10(standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin=12V Vout=0.9V (Through PCB Orientation)
0
1
2
3
4
5
6
7
8
9
10
11
25
30
35
40
45
50
55
60
65
70
75
80
85
Natural
Convection
300LFM
Output Current (A)
Ambient Temperature (℃)
400LFM
500LFM
100LFM
200LFM
600LFM
Figure 26: Output current vs. ambient temperature and air
velocity @Vin=12V, Vout=0.9V(Through PCB Orientation)
NE12S0A0V10(standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin=12V Vout=2.5V (Through PCB Orientation)
0
1
2
3
4
5
6
7
8
9
10
11
25
30
35
40
45
50
55
60
65
70
75
80
85
Natural
Convection
300LFM
Output Current (A)
Ambient Temperature (℃)
400LFM
500LFM
100LFM
200LFM
600LFM
Figure 27: Output current vs. ambient temperature and air
velocity@ Vin=12V, Vout=2.5V(Through PCB Orientation)
THERMAL CONSIDERATION
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
encountered
in
most
electronics
equipment. This type of equipment commonly uses
vertically mounted circuit cards in cabinet racks in which
the power modules are mounted.
The
following
figure
shows
the
wind
tunnel
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’’).
Thermal Derating
Heat can be removed by increasing airflow over the
module. 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.
MODULE
AIR FLOW
11 (0.43”)
50.8 (2.0”)
FACING PWB
PWB
AIR VELOCITY
AND AMBIENT
TEMPERATURE
MEASURED BELOW
THE MODULE
22 (0.87
”)
Note: Wind tunnel test setup figure dimensions are in
millimeters and (Inches)
Figure 24: Wind tunnel test setup


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