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UCC38051DG4 PDF预览

UCC38051DG4

更新时间: 2024-11-25 07:05:27
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德州仪器 - TI 功率因数校正控制器
页数 文件大小 规格书
30页 685K
描述
TRANSITION MODE PFC CONTROLLER

UCC38051DG4 数据手册

 浏览型号UCC38051DG4的Datasheet PDF文件第2页浏览型号UCC38051DG4的Datasheet PDF文件第3页浏览型号UCC38051DG4的Datasheet PDF文件第4页浏览型号UCC38051DG4的Datasheet PDF文件第5页浏览型号UCC38051DG4的Datasheet PDF文件第6页浏览型号UCC38051DG4的Datasheet PDF文件第7页 
ꢀꢁꢁ ꢂ ꢃꢄ ꢅ ꢄ ꢆ ꢀꢁ ꢁꢂ ꢃꢄ ꢅꢇ  
ꢀꢁꢁ ꢈ ꢃꢄ ꢅ ꢄ ꢆ ꢀꢁ ꢁꢈ ꢃꢄ ꢅꢇ  
SLUS515F−SEPTEMBER 2002 − REVISED MARCH 2009  
APPLICATIONS  
FEATURES  
D
Switch-Mode Power Supplies for Desktops,  
Monitors, TVs and Set Top Boxes (STBs)  
D
D
D
D
D
Transition Mode PFC Controller for Low  
Implementation Cost  
D
AC Adapter Front-End Power Supplies  
Electronic Ballasts  
Industry Pin Compatibility With Improved  
Feature Set  
D
Improved Transient Response With  
Slew-Rate Comparator  
DESCRIPTION  
The UCC38050 and UCC38051 are PFC  
Zero Power Detect to Prevent OVP During  
Light Load Conditions  
controllers for low-to-medium power applications  
requiring compliance with IEC 1000-3-2 harmonic  
reduction standard. It is designed for controlling a  
boost preregulator operating in transition mode  
(also referred to as boundary conduction mode or  
critical conduction mode operation). It features a  
transconductance voltage amplifier for feedback  
Accurate Internal V  
Regulation  
for Tight Output  
REF  
D
Two UVLO Options  
D
Overvoltage Protection (OVP),  
Open-Feedback Protection and Enable  
Circuits  
error processing,  
generating a current command proportional to the  
input voltage, current-sense (PWM)  
a
simple multiplier for  
D
D
D
750-mA Peak Gate Drive Current  
Low Start-Up and Operating Currents  
Lead (Pb)-Free Packages  
a
comparator, PWM logic and a totem-pole driver  
for driving an external FET.  
SIMPLIFIED APPLICATION DIAGRAM  
UCC38050  
VO_SNS VCC  
1
2
8
COMP  
DRV  
GND  
ZCD  
7
6
5
3
4
MULTIN  
CS  
UDG−02125  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
ꢉꢡ  
Copyright 2009, Texas Instruments Incorporated  
ꢝ ꢡ ꢞ ꢝꢖ ꢗꢫ ꢙꢘ ꢜ ꢤꢤ ꢢꢜ ꢚ ꢜ ꢛ ꢡ ꢝ ꢡ ꢚ ꢞ ꢦ  
1
www.ti.com  

UCC38051DG4 替代型号

型号 品牌 替代类型 描述 数据表
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