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参数资料
| 型号： | PKB4717PINBLA |
| 厂商： | ERICSSON POWER MODULES AB |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 75 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT PACKAGE-8 |
| 文件页数： | 3/14页 |
| 文件大小： | 473K |
| 代理商： | PKB4717PINBLA |
Ericsson Internal
PRODUCT SPECIFICATION
4 (5)
Prepared (also subject responsible if other)
No.
EJUNGYA
3/1301-BMR 636 01/A4 Uen
Approved
Checked
Date
Rev
Reference
SEC/D (Julia You)
ECHWANG
2007-6-18
A
Thermal Consideration continued
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. E.g 89.5 % = 0.895
2. Find the thermal resistance (Rth) in the Thermal Resistance
graph found in the Output section for each model.
Calculate the temperature increase (ΔT).
ΔT = Rth x Pd
3. Max allowed ambient temperature is:
Max Tref - ΔT.
E.g PKB 4717 PINB at 1m/s with full load:
1. ((
) -
1) × 75 W = 8.79 W
2. 8.79 W × 6.0°C/W = 53°C
3. 110 °C - 53°C = max ambient temperature is 57°C
The actual temperature will be dependent on several factors
such as the PCB size, number of layers and direction of
airflow.
Connections
Pin
Designation
Function
1
+In
Positive input
2
RC
Remote control
3
-In
Negative input
4
-Out
Negative output
5
-Sen
Negative remote sense
6
Vadj
Output voltage adjust
7
+Sen
Positive remote sense
8
+Out
Positive output
1
0.895
E
PKB 4717 PINB
DC/DC converters, Input 36-75 V, Output 10.5 A/75 W
EN/LZT 146 382 R1A June 2007
Ericsson Power Modules AB
Technical Specification
11
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PKB4718LCPI | 功能描述:DC/DC转换器 1.2Vdc 60A Isolated Input 36-75V 72W 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: |
| PKB4718LCPI LC | 制造商:Ericsson 功能描述: |
| PKB4810PINB | 功能描述:DC/DC转换器 3.3 Vdc 25A Iso Input 36-75V 82.5W 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: |
| PKB4810PINBLA | 制造商:Ericsson 功能描述:PSUP DC/DC CONV 48V/3.3V 25A 1/8-BRICK - Bulk |
| PKB4810PINBLB | 制造商:Ericsson 功能描述:48V TO 3.3V 20A DC/DC CONVERTOR |
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