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參數(shù)資料
| 型號(hào)： | QW050F41 |
| 廠商： | LINEAGE POWER LLC |
| 元件分類： | 電源模塊 |
| 英文描述： | DC-DC REG PWR SUPPLY MODULE |
| 文件頁(yè)數(shù)： | 6/20頁(yè) |
| 文件大?。?/td> | 534K |
| 代理商： | QW050F41 |
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14
Lineage Power
Data Sheet
April 2008
dc-dc Converters; 36 to 75 Vdc Input, 3.3 Vdc Output; 33 W to 50 W
QW050F1 and QW075F1 Power Modules:
Thermal Considerations (continued)
Heat Transfer with Heat Sinks (continued)
8-2380 (C)
Figure 28. Heat Sink Power Derating Curves;
Natural Convection; Transverse
Orientation
8-2381 (C)
Figure 29. Heat Sink Power Derating Curves;
Natural Convection; Longitudinal
Orientation
8-2382 (C)
Figure 30. Heat Sink Power Derating Curves;
1.0 m/s (200 lfm); Transverse
Orientation
8-2383 (C)
Figure 31. Heat Sink Power Derating Curves;
1.0 m/s (200 lfm); Longitudinal
Orientation
These measured resistances are from heat transfer
from the sides and bottom of the module as well as the
top side with the attached heat sink; therefore, the
case-to-ambient thermal resistances shown are gener-
ally lower than the resistance of the heat sink by itself.
The module used to collect the data in Figures 26 and
27 had a thermal-conductive dry pad between the case
and the heat sink to minimize contact resistance. The
example.
10
20
30
40
50
60
LOCAL AMBIENT TEMPERATURE, TA (C)
100
0
PO
WER
DISSIP
A
TION,
P
D
(W)
70
80
90
0
18
14
12
16
20
10
8
6
4
2
1 IN. HEAT SINK
1/2 IN. HEAT SINK
1/4 IN. HEAT SINK
NO HEAT SINK
10
20
30
40
50
60
LOCAL AMBIENT TEMPERATURE, TA (C)
100
0
PO
WER
DISSIP
A
TION,
P
D
(W)
70
80
90
0
18
14
12
16
20
10
8
6
4
2
1 IN. HEAT SINK
1/2 IN. HEAT SINK
1/4 IN. HEAT SINK
NO HEAT SINK
10
20
30
40
50
60
LOCAL AMBIENT TEMPERATURE, TA (C)
100
0
PO
WER
DISSIP
A
TION,
P
D
(W)
70
80
90
0
18
14
12
16
20
10
8
6
4
2
1 IN. HEAT SINK
1/2 IN. HEAT SINK
1/4 IN. HEAT SINK
NO HEAT SINK
10
20
30
40
50
60
LOCAL AMBIENT TEMPERATURE, TA (C)
100
0
PO
WER
DISSIP
A
TION,
P
D
(W)
70
80
90
0
18
14
12
16
20
10
8
6
4
2
1 IN. HEAT SINK
1/2 IN. HEAT SINK
1/4 IN. HEAT SINK
NO HEAT SINK
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