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DPA422GN

更新时间: 2024-02-28 09:48:05
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
DPA-Switch DC-DC Forward Converter Design Guide

DPA422GN 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:D2PAK包装说明:TO-263, 7/6 PIN
针数:4Reach Compliance Code:unknown
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.87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-PSSO-G6
JESD-609代码:e0长度:10.29 mm
功能数量:1端子数量:6
最高工作温度:125 °C最低工作温度:-40 °C
最大输出电流:1.31 A封装主体材料:PLASTIC/EPOXY
封装代码:TO-263封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):225
认证状态:Not Qualified座面最大高度:4.95 mm
表面贴装:YES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:TIN LEAD
端子形式:GULL WING端子节距:1.27 mm
端子位置:SINGLE处于峰值回流温度下的最长时间:30
宽度:8.405 mmBase Number Matches:1

DPA422GN 数据手册

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DPA-SwitchDC-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  

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