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器件3D模型￥ 3.291
UCC38050D 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
电源管理
封装:
SOIC-8
描述:
转换模式PFC CONTRLLER TRANSITION MODE PFC CONTRLLER
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P6Hot
典型应用电路图在P10
原理图在P6P11P17
封装尺寸在P24P26P27
型号编码规则在P2
标记信息在P24P25
封装信息在P24P25P26P27
技术参数、封装参数在P3
应用领域在P1P31
电气规格在P4P5
导航目录
UCC38050D数据手册
Page:
of 31 Go
若手册格式错乱，请下载阅览PDF原文件
UCC28050, UCC28051
UCC38050, UCC38051
SLUS515F−SEPTEMBER 2002 − REVISED MARCH 2009
TRANSITION MODE PFC CONTROLLER
1
www.ti.com
FEATURES
D
Transition Mode PFC Controller for Low
Implementation Cost
D Industry Pin Compatibility With Improved
Feature Set
D Improved Transient Response With
Slew-Rate Comparator
D Zero Power Detect to Prevent OVP During
Light Load Conditions
D Accurate Internal V
REF
for Tight Output
Regulation
D Two UVLO Options
D Overvoltage Protection (OVP),
Open-Feedback Protection and Enable
Circuits
D ± 750-mA Peak Gate Drive Current
D Low Start-Up and Operating Currents
D Lead (Pb)-Free Packages
APPLICATIONS
D Switch-Mode Power Supplies for Desktops,
Monitors, TVs and Set Top Boxes (STBs)
D AC Adapter Front-End Power Supplies
D Electronic Ballasts
DESCRIPTION
The UCC38050 and UCC38051 are PFC
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
error processing, a simple multiplier for
generating a current command proportional to the
input voltage, a current-sense (PWM)
comparator, PWM logic and a totem-pole driver
for driving an external FET.
SIMPLIFIED APPLICATION DIAGRAM
UDG−02125
1
2
3
4
8
7
6
5
VCC
DRV
GND
ZCD
VO_SNS
COMP
MULTIN
CS
UCC38050
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright © 2009, Texas Instruments Incorporated
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.
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