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参数资料
| 型号： | LUW025A |
| 厂商： | LINEAGE POWER LLC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 25 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | MODULE-6 |
| 文件页数： | 2/15页 |
| 文件大小： | 448K |
| 代理商： | LUW025A |
10
Lineage PowerLineage Power
Data Sheet
April 2008
36 Vdc to 75 Vdc In; 3.3 Vdc and 5 Vdc Out; 16.5 W and 25
LUW025-Series Power Modules: dc-dc Converters:
Draft Copy Only
Lineage Power — Proprietary Use pursuant to Company instructions
Thermal Considerations (continued)
8-2603a
Note: Dimensions are in millimeters and (inches).
Figure 16. Thermal Test Setup
8-2788
Figure 17. TQ Temperature Measurement Location;
Top View; Orientation 1
8-2789
Figure 18. TQ Temperature Measurement Location;
Top View; Orientation 2
Convection Requirements for Cooling
To predict the approximate cooling needed for the mod-
ule, determine the power dissipated as heat by the unit
for the particular application. Figures 19—20 show typ-
ical heat dissipation for the module over a range of out-
put currents.
8-3026
Figure 19. LUW025F Power Dissipation vs. Output
Current, TA = 25 °C; Either Orientation
8-1888b
Figure 20. LUW025A Power Dissipation vs. Output
Current, TA = 25 °C; Either Orientation
With the known heat dissipation, module orientation
with respect to airflow, and a given local ambient tem-
perature, the minimum airflow can be chosen from the
derating curves in Figures 21—24.
AIRFLOW
25.4 (1.0)
FOR AIR VELOCITY
AND AMBIENT
TEMPERATURE
MEASURE HERE
203.2
(8.0)
76.2 (3.0)
AIRFLOW
THERMOCOUPLE
LOCATION T1
AIRFLOW
THERMOCOUPLE
LOCATION T1
1.00
3.00
4.00
0.00
OUTPUT
CURRENT, IO (A)
3.00
2.00
5.00
6.00
5.00
0.40
1.00
PO
WER
DISSIP
A
TION,
P
D
(W)
4.00
2.00
VI = 75 V
VI = 48 V
VI = 36 V
8
7
5
4
0
0.5
1
1.5
2
4.5
5
OUTPUT
CURRENT, IO (A)
PO
WER
DISSIP
A
TION,
P
D
(W)
2.5
3
3.5
4
3
2
1
6
VI = 75 V
VI = 48 V
VI = 36 V
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