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參數(shù)資料
| 型號： | ND12S0A0V50PNFA |
| 廠商： | Delta Electronics, Inc. |
| 英文描述： | Delphi ND Series Non-Isolated Point of Load DC/DC Power Modules: 12Vin, 0.9V~3.63Vout, 50Aout |
| 中文描述： | 德爾福釹系列非隔離負載點DC / DC電源模塊：12Vin，0.9?3.63Vout，50Aout |
| 文件頁數(shù)： | 10/12頁 |
| 文件大?。?/td> | 515K |
| 代理商： | ND12S0A0V50PNFA |
DS_ND12S10A_03082007
10
THERMAL CUREVES
`
Figure 32:
Temperature measurement location* The allowed
maximum hot spot temperature is defined at 124
℃
ND12S0A0V50(standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin=12V Vout=0.9V (Through PCB Orientation)
0
5
10
15
20
25
30
35
40
45
50
55
25
30
35
40
45
50
55
60
65
70
85
Natural
Convection
Output Current (A)
℃
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
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
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.
in
most
electronics
the
wind
tunnel
MODULE
AIR FLOW
11 (0.43”)
22 (0.87”)
50.8 (2.0”)
FACING PWB
PWB
AIR VELOCITY
AND AMBIENT
TEMPERATURE
MEASURED BELOW
THE MODULE
Note:
Wind tunnel test setup figure dimensions are in
millimeters and (Inches)
Figure 31:
Wind tunnel test setup
Figure 33:
Output current vs. ambient temperature and air
velocity @Vin=12V, Vout=0.9V(Through PCB Orientation)
ND12S0A0V50(standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin=12V Vout=2.5V (Through PCB Orientation)
55
0
5
10
15
20
25
30
35
40
45
50
25
30
35
40
45
50
55
60
65
70
85
Natural
Convection
Output Current (A)
Ambient Temperature (
℃
)
100LFM
200LFM
300LFM
Figure 34:
Output current vs. ambient temperature and air
velocity@ Vin=12V, Vout=2.5V(Through PCB Orientation)
100LFM
200LFM
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