- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄358715 > JW100A Power Modules: dc-dc Converters; 36 to 75 Vdc Input, 5 Vdc Output; 50 W to 150 W PDF資料下載
參數(shù)資料
| 型號(hào)： | JW100A |
| 元件分類(lèi)： | DC/DC變換器 |
| 英文描述： | Power Modules: dc-dc Converters; 36 to 75 Vdc Input, 5 Vdc Output; 50 W to 150 W |
| 中文描述： | 電源模塊：型DC - DC轉(zhuǎn)換器，36至75伏直流電輸入，5伏直流電輸出，50瓦至150瓦 |
| 文件頁(yè)數(shù)： | 15/20頁(yè) |
| 文件大?。?/td> | 1036K |
| 代理商： | JW100A |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)當(dāng)前第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)
Tyco Electronics Corp
15
Data Sheet
July 1999
dc-dc Converters; 36 to 75 Vdc Input, 5 Vdc Output; 50 W to 150 W
JW050A, JW075A, JW100A, JW150A Power Modules:
Thermal Considerations
(continued)
Heat Transfer with Heat Sinks
The power modules have through-threaded, M3 x 0.5
mounting holes, which enable heat sinks or cold plates
to attach to the module. The mounting torque must not
exceed 0.56 N-m (5 in.-lb.). For a screw attachment
from the pin side, the recommended hole size on the
customer’s PWB around the mounting holes is
0.130 ± 0.005 inches. If a larger hole is used, the
mounting torque from the pin side must not exceed
0.25 N-m (2.2 in.-lb.).
Thermal derating with heat sinks is expressed by using
the overall thermal resistance of the module. Total mod-
ule thermal resistance (
θ
ca) is defined as the maximum
case temperature rise (
T
C, max
) divided by the module
power dissipation (P
D
):
The location to measure case temperature (T
C
) is
shown in Figure 26. Case-to-ambient thermal resis-
tance vs. airflow is shown, for various heat sink config-
urations and heights, in Figure 32. These curves were
obtained by experimental testing of heat sinks, which
are offered in the product catalog.
8-1153 (C)
Figure 32. Case-to-Ambient Thermal Resistance
Curves; Either 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 Figure 32 had a
thermal-conductive dry pad between the case and the
heat sink to minimize contact resistance. The use of
Figure 32 is shown in the following example.
Example
If an 85 °C case temperature is desired, what is the
minimum airflow necessary Assume the JW100A
module is operating at V
I
= 54 V and an output current
of 20 A, maximum ambient air temperature of 40 °C,
and the heat sink is 1/2 inch.
Solution
Given: V
I
= 54 V
I
O
= 20 A
T
A
= 40 °C
T
C
= 85 °C
Heat sink = 1/2 in.
Determine P
D
by using Figure 30:
P
D
= 17 W
Then solve the following equation:
Use Figure 32 to determine air velocity for the 1/2 inch
heat sink.
The minimum airflow necessary for the JW100A mod-
ule is 1.3 m/s (260 ft./min.).
θ
ca
T
C max
,
D
-------P
T
C
-------P
T
A
–
(
)
D
=
=
0
0.5
(100)
1.0
(200)
1.5
(300)
2.0
(400)
2.5
(500)
3.0
(600)
0
1
5
6
7
8
AIR VELOCITY, m/s (ft./min.)
4
3
2
1 1/2 IN. HEAT SINK
1 IN. HEAT SINK
1/2 IN. HEAT SINK
1/4 IN. HEAT SINK
NO HEAT SINK
C
R
θ
C
°
C
θ
ca
T
C
-------P
T
A
–
(
)
D
=
θ
ca
85
-----------------------
40
–
(
)
17
=
θ
ca
2.6 °C/W
=
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| JW100A1 | Power Modules: dc-dc Converters; 36 to 75 Vdc Input, 5 Vdc Output; 50 W to 150 W |
| K2400G | silicon bilateral voltage triggered switch |
| K2400S | silicon bilateral voltage triggered switch |
| K2400E70 | silicon bilateral voltage triggered switch |
| K2400F1 | silicon bilateral voltage triggered switch |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| JW100A1 | 功能描述:DC/DC轉(zhuǎn)換器 5V 20A 100W 9-Pin RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱(chēng)）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
| JW100A1-53 | 制造商:LUCENT TECH / TYCO 功能描述: |
| JW100B | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:DC-to-DC Voltage Converter |
| JW100B1 | 功能描述:DC/DC轉(zhuǎn)換器 12V 8.3A 100W 9-Pin RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱(chēng)）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
| JW100B1-53 | 制造商:LUCENT TECH / TYCO 功能描述: |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。