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参数资料
| 型号： | LW010AJ |
| 厂商： | LINEAGE POWER LLC |
| 元件分类： | 电源模块 |
| 英文描述： | DC-DC REG PWR SUPPLY MODULE |
| 文件页数： | 9/24页 |
| 文件大小： | 917K |
| 代理商： | LW010AJ |
Lineage Power
17
Data Sheet
March 27, 2008
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Thermal Considerations
The power module operates in a variety of thermal
environments; however, sufficient cooling should be
provided to help ensure reliable operation of the unit.
Heat-dissipating components inside the unit are ther-
mally coupled to the case. Heat is removed by conduc-
tion, convection, and radiation to the surrounding
environment. Proper cooling can be verified by mea-
suring the case temperature. The case temperature
(TC) should be measured at the position indicated in
8-1363(C).b
Note: Dimensions are in millimeters and (inches). Pin locations are
for reference only.
Figure 41. LW010 and LC010 Case Temperature
Measurement Location
8-1363(C).c
Note: Dimensions are in millimeters and (inches). Pin locations are
for reference only.
Figure 42. LW015 and LC015 Case Temperature
Measurement Location
face of the modules. The temperatures at these loca-
tions should not exceed the maximum case
temperature indicated on the derating curve. The out-
put power of the module should not exceed the rated
power for the module as listed in the Ordering Informa-
tion table.
Heat Transfer Characteristics
Increasing airflow over the module enhances the heat
the maximum power that can be dissipated by the mod-
ule without exceeding the maximum case temperature
versus local ambient temperature (TA) for natural con-
vection through 3.0 ms–1 (600 ft./min.).
Systems in which these power modules are used typi-
cally generate natural convection airflow rates of
0.25 ms–1 (50 ft./min.) due to other heat dissipating
components in the system. Therefore, the natural con-
vection condition represents airflow rates of approxi-
shown in the following example.
Example
What is the minimum airflow necessary for an LW010A
operating at 48 V, an output current of 2.0 A, and a
maximum ambient temperature of 91 °C?
Solution:
Given: VI = 48 V, IO = 2.0 A (IO, max), TA = 91 °C
Determine airflow (Figure 43): v = 2.0 ms–1
(400 ft./min.)
8-1375(C).a
Figure 43. LW010/LC010 Forced Convection Power
Derating; Either Orientation
dc-dc POWER MODULE
15.2
(0.6)
+
-
+
-
OUT
IN
LW010/LC010
10.2
(0.4)
dc-dc POWER MODULE
5.1
(0.2)
+
-
+
-
OUT
IN
LW015/LC015
5.1 (0.2)
UNITS
PO
WER
DISSIP
A
TION,
P
D
(W)
50
60
70
80
90
100
110
40 45
55
65
75
85
95
105
0
3.5
1.5
1
0.5
2
2.5
3
MAX AMBIENT TEMPERATURE, TA (C)
MAXIMUM CASE TEMPERATURE
2.0 ms-1 (400 ft./min.)
3.0 ms-1 (600 ft./min.)
1.0 ms-1 (200 ft./min.)
NATURAL CONVECTION
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