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参数资料
| 型号： | PKL4311PIPTSP |
| 厂商： | ERICSSON POWER MODULES AB |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 300 W DC-DC REG PWR SUPPLY MODULE |
| 文件页数： | 35/42页 |
| 文件大小： | 828K |
| 代理商： | PKL4311PIPTSP |
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EN/LZT 146 047 R4A Ericsson Power Modules, June 2004
PKL 4000 Series Datasheet
0123
0
1
2
3
4
5
6
[m/s]
[°C/W]
Thermal Consideration
General
The PKL 4000 Series DC/DC converters are designed to
operate in a variety of thermal environments, however
sufficient cooling should be provided to help ensure reliable
operation. Heat is removed by conduction, convection and
radiation to the surrounding environment. Increased airflow
enhances the heat transfer via convection. The available load
current vs. ambient air temperature and airflow at Vin=53 V
for each model is according to the information given under
the output section. The test is done in a wind tunnel with a
cross section of 305x305 mm, the DC/DC converter vertically
mounted on a 16 layer PCB with a size of 254x254 mm.
Proper cooling can be verified by measuring the temperature
of selected devices.
Calculation of ambient temperature
By using the thermal resistance the maximum allowed
ambient temperature can be calculated.
1. The powerloss is calculated by using the formula
((1/
η) - 1) × output power = power losses.
η = efciency of converter. E.g 85 % = 0.85
2. Find the value of the thermal resistance in the diagram
by using the airow speed at the module. Take the thermal
resistance x powerloss to get the temperature increase.
Thermal resistance vs. airspeed measured at the converter.
Tested in windtunnel with a cross section of 305×305 mm
mounted on a 16 layer PCB with a size of 254×254 mm.
3. Max allowed calculated ambient temperature is: Max
TC of DC/DC converter –temperature increase.
Example: PKL 4118B PIT
Conditions:
Input voltage 53 V
Max case temperature 110 °C
Output current 80 A
Efciency 81.5%
Airow 2 m/s
2. 32.6W × 1.8 °C/W = 58.68 °C (temperature increase)
3. 110 °C - 58.7 °C = max ambient temperature is 51.3 °C
The real temperature will be dependent on several factors,
like PCB size and type, direction of airow, air turbulence,
heatsinking etc. It is recommended to verify the temperature
by testing.
1. ((
) - 1) × 144 W = 32.6 W (powerloss)
1
0.815
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相关代理商/技术参数 |
参数描述 |
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| PKL4311PIT | 功能描述:DC/DC转换器 5Vdc 60A Isolated Input 36 -75V 300W 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: |
| PKL4313APIT | 制造商:Ericsson 功能描述:DC/DC PS SGL-OUT 12V 30A 360W - Bulk |
| PKL4313PIT | 功能描述:DC/DC转换器 12Vdc 25A Isolated Input 36 -75V 300W 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: |
| PKL4316PIT | 制造商:Ericsson 功能描述:DC/DC PS SGL-OUT 28V 11A 310W - Bulk |
| PKL4316PITM | 制造商:Ericsson 功能描述:DC/DC PS SGL-OUT 28V 11A 310W - Bulk |
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