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DPA425PN

更新时间： 2024-11-02 12:52:15
品牌 Logo 应用领域
帕沃英蒂格盛 - POWERINT /
页数 文件大小 规格书
20页 1071K
描述
DC-DC Forward Converter Design Guide Application Note AN-31

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DPA425PN 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：DIP
包装说明：DIP, DIP8,.3针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：14 weeks
风险等级：2.1模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：VOLTAGE-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：75 V最小输入电压：16 V
标称输入电压：35 VJESD-30 代码：R-PDIP-T8
JESD-609代码：e3长度：9.575 mm
功能数量：1端子数量：8
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流：7 A封装主体材料：PLASTIC/EPOXY
封装代码：DIP封装等效代码：DIP8,.3
封装形状：RECTANGULAR封装形式：IN-LINE
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
座面最大高度：4.7 mm子类别：Switching Regulator or Controllers
表面贴装：NO切换器配置：SINGLE
最大切换频率：425 kHz技术：CMOS
温度等级：AUTOMOTIVE端子面层：MATTE TIN
端子形式：THROUGH-HOLE端子节距：2.54 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：7.62 mmBase Number Matches：1

DPA425PN 数据手册

 浏览型号DPA425PN的Datasheet PDF文件第2页浏览型号DPA425PN的Datasheet PDF文件第3页浏览型号DPA425PN的Datasheet PDF文件第4页浏览型号DPA425PN的Datasheet PDF文件第5页浏览型号DPA425PN的Datasheet PDF文件第6页浏览型号DPA425PN的Datasheet PDF文件第7页 
DPA-Switch™ DC-DC Forward  
Converter Design Guide  
Application Note AN-31  
•
•
Selectable 300 kHz or 400 kHz operation  
Lossless integrated cycle-by-cycle current limit  
Introduction  
The single-ended forward converter topology is usually the  
best solution for DC-DC applications in industrial controls,  
Telecom central office equipment, digital feature phones, and  
systems that use distributed power architectures.  
The example circuits in this design guide illustrate the use of  
these and other features of DPA-Switch.  
Scope  
The feature set of DPA-Switch offers the following advantages  
in DC-DC single-ended forward converter designs:  
This document gives guidance for the design of a single-  
ended forward converter with DPA-Switch in applications  
that require a single output voltage. It is intended for systems  
engineers and circuit designers who wish to become familiar  
with the capabilities and requirements of DPA-Switch in  
DC-DCapplications.Thisapplicationnoteprovidesbackground  
materialthatwillassistusersoftheDPA-SwitchDC-DCforward  
converter design utility that is included in the software design  
tool, PI Expert. Subsequent application notes will provide  
comprehensive procedures for designs of greater complexity.  
Designers are advised to check Power Integrationsʼwebsite at  
www.powerint.com for the latest application information and  
design tools.  
•
•
Low component count  
High efficiency (typically >91% with synchronous  
rectification)  
•
•
•
•
•
•
•
Built in soft-start to minimize stress and overshoot  
Built in accurate line under-voltage detection  
Built-in accurate line overvoltage shutdown protection  
Built in adjustable current limit  
Built-in overload and open loop fault protection  
Built-in thermal shutdown  
Programmable duty cycle reduction to limit duty cycle  
excursion at high line and transient load conditions  
Very good light-load efficiency  
•
Snubber  
Output  
Inductor  
Power  
Transformer  
+
+
Bias  
Voltage  
Output  
Capacitor  
CCLAMP  
VO  
+
–
RUVLO  
DC  
INPUT  
TL431 with  
Frequency  
Drain  
Clamp  
Compensation  
DPA-Switch  
D
S
L
U1  
CONTROL  
FEEDBACK CIRCUIT  
C
CBYPASS  
F
RFC  
CFC  
Input  
Return  
PI-2873-062204  
Figure 1. Typical Configuration of DPA-Swtich in a Single-Ended DC-DC Forward Converter with One Output.  
July 2004  
1234567...20

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