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參數(shù)資料
| 型號： | SMLW010A |
| 英文描述： | SMLW010 Single-Output Low-Profile Power Modules: 36 Vdc to 75 Vdc Input; 10 W |
| 中文描述： | SMLW010單輸出低壓電源模塊簡介：36伏到75伏直流輸入; 10瓦 |
| 文件頁數(shù)： | 9/16頁 |
| 文件大小： | 222K |
| 代理商： | SMLW010A |
Tyco Electronics Corp.
9
Data Sheet
January 2002
Power Modules: 36 Vdc to 75 Vdc Input; 10 W
SMLW010 Single-Output Low-Profile
Feature Descriptions
(continued)
Synchronization (Optional)
With external circuitry, the unit is capable of synchroni-
zation from an independent time base with a switching
rate equal to the nominal switching frequency shown in
the Output Specifications table. Other frequencies may
be available; please consult the factory for application
guidelines and/or a description of the external circuit
needed to use this feature.
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
(T
C
) should be measured at the position indicated in
Figure 7.
8-1363e
Note: Dimensions are in millimeters and (inches). Pin locations are
for reference only.
Figure 7. SMLW Case Temperature
Measurement Location
Note that the view in Figure 7 is of the surface of the
module. The temperature at this location should not
exceed the maximum case temperature indicated on
the derating curves. The output power of the module
should not exceed the rated power for the module as
listed in the Ordering Information table.
Heat Transfer Characteristics
Increasing airflow over the module enhances the heat
transfer via convection. Figure 8 shows the maximum
power that can be dissipated by the module without
exceeding the maximum case temperature versus local
ambient temperature (T
A
) for natural convection
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-
mately 0.25 ms
–1
(50 ft./min.). Use of Figure 8 is shown
in the following example.
Example
What is the minimum airflow necessary for an
SMLW010A operating at V
I
= 48 V, an output current of
1.6 A, and a maximum ambient temperature of 86 °C
Solution
Given: V
I
= 48 V, I
O
= 1.6 A (I
O, max
), T
A
= 86 °C
Determine P
D
(Figure 9): P
D
= 2.1 W
Determine airflow (Figure 8): v = 1 ms
–1
(200 ft./min.)
SMLW010A
DC-DC Power Module
IN:DC 36-75V, 0.6A OUT:DC 5V, 2A
1
24 (0.94)
11
(0.45)
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| SMLW010G | 制造商:MA-COM 制造商全稱:M/A-COM Technology Solutions, Inc. 功能描述:SMLW010 Single-Output Low-Profile Power Modules: 36 Vdc to 75 Vdc Input; 10 W |
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