- 您现在的位置：买卖IC网 > PDF目录69060 > PKU4511SI (ERICSSON POWER MODULES AB) 1-OUTPUT 50 W DC-DC REG PWR SUPPLY MODULE PDF资料下载
参数资料
| 型号： | PKU4511SI |
| 厂商： | ERICSSON POWER MODULES AB |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 50 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT, SMD-8 |
| 文件页数： | 26/38页 |
| 文件大小： | 1098K |
| 代理商： | PKU4511SI |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页当前第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页
Ericsson Internal
PRODUCT SPECIFICATION
4 (6)
Prepared (also subject responsible if other)
No.
EJUNGYA
3/1301-BMR 602 Uen
Approved
Checked
Date
Rev
Reference
SEC/D (Julia You)
EQUENXU
2008-6-10
F
Thermal Consideration
General
The converters are designed to operate in different thermal
environments and sufficient cooling must be provided to
ensure reliable operation.
Cooling is achieved mainly by conduction, from the pins to
the host board, and convection, which is dependent on the
airflow across the converter. Increased airflow enhances the
cooling of the converter.
The Output Current Derating graph found in the Output
section for each model provides the available output current
vs. ambient air temperature and air velocity at Vin = 53 V.
The DC/DC converter is tested on a 254 x 254 mm,
35 m (1 oz), 8-layer test board mounted vertically in a wind
tunnel with a cross-section of 305 x 305 mm.
Proper cooling of the DC/DC converter can be verified by
measuring the temperature at positions P1. The temperature
at these positions should not exceed the max values provided
in the table below.
See Design Note 019 for further information.
Position
Device
Designation
Max value
P1
Mosfet
Tref
120C
P1
Definition of reference temperature (Tref)
The reference temperature is used to monitor the temperature
limits of the product. Temperatures above maximum Tref are
not allowed and may cause degradation or permanent
damage to the product. Tref is also used to define the
temperature range for normal operating conditions.
Tref is defined by the design and used to guarantee safety
margins, proper operation and high reliability of the module.
Ambient Temperature Calculation
By using the thermal resistance the maximum allowed
ambient temperature can be calculated.
1. The power loss is calculated by using the formula
((1/η) - 1) × output power = power losses (Pd).
η = efficiency of converter. For example 89.2 % = 0.892
2. Find the thermal resistance (R
th) in the Thermal Resistance
graph found in the Output section for each model.
Calculate the temperature increase (T).
T = Rt
h x Pd
3. Max allowed ambient temperature is:
Max T
ref - T.
Example PKU 4510 (@ V
I 53 V &15 A) at 1 m/s:
1. ((
) -
1) × 49.5 W = 5.99 W
2. 5.99 W × 9.2°C/W = 55.1°C
3. 120 °C — 55.1°C = max ambient temperature is 64.9°C
The actual temperature will be dependent on several factors
such as the PCB size, number of layers and direction of
airflow.
1
0.892
E
PKU 4000 Series
DC/DC converters, Input 36-75 V, Output 25 A/50 W
EN/LZT 146 308 R4B July 2008
Ericsson Power Modules AB
Technical Specication
32
相关PDF资料 |
PDF描述 |
|---|---|
| PKU4510SI | 1-OUTPUT 49.5 W DC-DC REG PWR SUPPLY MODULE |
| PKU4319PILA | 1-OUTPUT 37.5 W DC-DC REG PWR SUPPLY MODULE |
| PKU4318HPILB | 1-OUTPUT 37.5 W DC-DC REG PWR SUPPLY MODULE |
| PKU4511PILA | 1-OUTPUT 50 W DC-DC REG PWR SUPPLY MODULE |
| PKU4511PILB | 1-OUTPUT 50 W DC-DC REG PWR SUPPLY MODULE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PKU4513 PI | 制造商:Ericsson 功能描述: |
| PKU4513 SI/C | 制造商:Ericsson 功能描述: |
| PKU4513PI | 功能描述:DC/DC转换器 12Vdc 4.2A Isolated Input 36-75V 50W 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: |
| PKU4513PILA | 制造商:Ericsson 功能描述:DC/DC PS SGL-OUT 12V 4.2A 50W - Bulk 制造商:Ericsson 功能描述:48V IN 12V OUT POWER MODULE |
| PKU4513PIPLA | 制造商:Ericsson 功能描述:1/16 BRICK, DC/DC CONVERTER, 50W, ISOLATED - Trays |
发布紧急采购，3分钟左右您将得到回复。