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參數(shù)資料
| 型號： | AV60A-048L-033D025-8 |
| 元件分類： | 電源模塊 |
| 英文描述： | 2-OUTPUT 75 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | 61 X 57.90 MM, 12.7 MM HEIGHT, HALF BRICK PACKAGE-10 |
| 文件頁數(shù)： | 15/25頁 |
| 文件大?。?/td> | 273K |
| 代理商： | AV60A-048L-033D025-8 |
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-22-
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velocity have been determined experimentally
and shown in figure 41. The highest values on
each curve represents the point of natural con-
vection.
Figure 41 is used for determining thermal per-
formance under various conditions of airflow
and heat sink configurations.
Example 4. How to determine the allowable
minimum airflow to heat sink combinations
necessary for a module under a desired Tc
and a certain condition?
Although the maximum case temperature for
the AV60A dual output series converters is
100° C, you can improve module reliability by
limiting Tc,max to a lower value. How to
decide? For example, what is the allowable
minimum airflow for AV60A-048L-050D033(N)
heat sink combinations at desired Tc of 80 °C?
The working condition is as following:
Vin = 48V
IO1 = 1.5 A
IO2 = 13.5 A
TA = 40 °C.
Determine PD ( Fig.30 )
PD = 13.5 W
Then solve RCA
::
RCA =
TC, max / PD
RCA =
(TC TA)
/ PD
RCA =
(80 40)
/ 13.5 = 3 °C/W
determine air velocity from figure 41:
If no heat sink:
v = 2.7 m/s (540 ft./min.)
If 1/4 in. heat sink:
v = 1.9 m/s (380 ft./min.)
If 1/2 in. heat sink:
v = 1.2 m/s (24 ft./min.)
If 1 in. heat sink:
v = 0.4 m/s (80 ft./min.)
Example 5. How to determine case tempera-
ture ( Tc ) for the various heat sink configu-
rations at certain air velocity?
What is the allowable Tc for AV60A-048L-
033D025(N) heat sink configurations at desired
air velocity of 2.0 m/s, and it is operating at a 48
V line voltage, a total output current of 15A, a
40 °C maximum ambient temperature?
Determine PD ( Fig. 32. ) with condition:
Vi = 48V
IO1 = 1.5 A, IO2 = 13.5 A
TA = 40 ° C
v = 2.0 m/s (400 ft./min.)
Get: PD = 11.5 W
Determine TC: TC = (RCA x PD) + TA
Determine the corresponding thermal resis-
tances ( RCA ) from Figure 41:
No heat sink: RCA = 3.8 ° C/W
TC = (3.8 x 11.5) + 40 = 83.7 ° C
1/4 in. heat sink: RCA = 2.8 ° C/W
TC = (2.8 x 11.5) + 40 = 72.2 ° C
1/2 in. heat sink: RCA = 2.0 ° C/W
TC = (2 x 11.5) + 40 = 63 ° C
1 in. heat sink: RCA = 1.2 ° C/W
TC = (1.2 x 11.5) + 40 = 53.8 °C
In this configuration, the module does not need
the heat sink and the power module does not
exceed the maximum case temperature of
100° C.
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
Case-Ambient
Thermal
Resistance
R
CA
(°C/W)
1 in. heat sink
1/2 in. heat sink
1/4 in. heat sink
NO heat sink
Fig.41 Case-to-Ambient Thermal Resistance
Curves; Either Orientation
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| AV60A-048L-033D025N | 功能描述:DC/DC轉(zhuǎn)換器 CONV DC-DC 75W 48V 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（標稱）: 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）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸: |
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| AV60C-048L-033F06-8 | 功能描述:CONV DC-DC 30W 48VIN 3.3V POS-EN RoHS:否 類別:電源 - 板載 >> DC DC Converters 系列:AV60C 產(chǎn)品目錄繪圖:V(R,7)AH Series 標準包裝:25 系列:V7AH 類型:非隔離（POL） 輸出數(shù):1 電壓 - 輸入（最?。?3V 電壓 - 輸入（最大）:5.5V Voltage - Output 1:1.8V Voltage - Output 2:- Voltage - Output 3:- 電流 - 輸出（最大）:12A 電源（瓦） - 制造商系列:21W 電壓 - 隔離:- 特點:具有遠程開/關(guān)功能和 UVLO 安裝類型:通孔 封裝/外殼:5-SIP 模塊 尺寸/尺寸:0.70" L x 0.31" W x 0.65" H（17.8mm x 7.9mm x 16.5mm） 包裝:管件 工作溫度:-40°C ~ 85°C 效率:87% 電源（瓦特）- 最大:21.6W 其它名稱:507-1141-5 |
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