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参数资料
| 型号： | AV60C-048L-150F06 |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 100 W DC-DC REG PWR SUPPLY MODULE |
| 文件页数： | 26/36页 |
| 文件大小： | 425K |
| 代理商： | AV60C-048L-150F06 |
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USA
Europe
Asia
TEL:
1-760-930-4600
44-(0)1384-842-211
852-2437-9662
FAX:
1-760-930-0698
44-(0)1384-843-355
852-2402-4426
www.astec.com
Basic Thermal Model
There is another approach to analyze module
thermal performance, to model the overall ther-
mal resistance of the module. This presentation
method is especially useful when considering
heat sinks. The following equation can be used
to calculate the total thermal resistance .
RCA =
TC, max / PD
Where RCA is the module thermal resistance,
TC, max is the maximum case temperature
rise,
PD is the module power dissipation.
In this model, PD,
TC, max, and RCA are equals
to current flow, voltage drop, and electrical
resistance, respectively, in Ohm's law, as
shown in Figure 32. Also,
TC, max is defined as
the difference between the module case tem-
perature (TC) and the inlet ambient temperature
(TA).
TC, max = TC TA
Where TC is the module case temperature,
TA is the inlet ambient temperature.
For AV60C half-brick series 50W to 150W 15V
output converters, the module's thermal resis-
tance values versus air velocity have been
determined experimentally and shown in Figure
33. The highest values on each curve repre-
sents the point of natural convection.
Figure 33 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 AV60C half-brick 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 AV60C-048L-150F10 heat
sink combinations at desired Tc of 80 °C?
The working condition is as following:
Vin = 48 V, IO = 10 A, TA = 40 °C
Determine PD ( Fig.24 )
PD = 19 W
Then solve RCA
::
RCA =
TC, max / PD
RCA =
(TC TA)
/ PD
RCA =
(80 40)
/ 19 = 2°C/W
determine air velocity from figure 33:
If no heat sink:
v > 3.0 m/s (600 ft./min.)
If 1/4 in. heat sink:
v = 3.0 m/s (600 ft./min.)
If 1/2 in. heat sink:
v = 2.0 m/s (400 ft./min.)
If 1 in. heat sink:
v = 1.2 m/s (240 ft./min.)
PD
Thermal
RCA:
Resistance
Fig.32 Basic Thermal Resistance Model
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.33 Case-to-Ambient Thermal
Resistance Curves; Either Orientation
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相关代理商/技术参数 |
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| AV60C-048L-150F06N | 功能描述:DC/DC转换器 CONV DCDC 100W 48Vin RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| AV60C-048L-150F10 | 功能描述:DC/DC转换器 CONV DCDC 150W 48Vin RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| AV60C-048L-150F10N | 功能描述:DC/DC转换器 CONV DCDC 150W 48Vin RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
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| AV60C-048L-280F02N | 功能描述:DC/DC转换器 DC-DC 1-OUT 28V 2A 150W 9-Pin 1/2-Brick RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
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