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UCC28050, UCC28051
UCC38050, UCC38051
SLUS515F?SEPTEMBER 2002 ? REVISED MARCH 2009
TRANSITION MODE PFC CONTROLLER
FEATURES
D Transition Mode PFC Controller for Low
Implementation Cost
APPLICATIONS
D Switch-Mode Power Supplies for Desktops,
Monitors, TVs and Set Top Boxes (STBs)
D
D
Industry Pin Compatibility With Improved
Feature Set
Improved Transient Response With
D
D
AC Adapter Front-End Power Supplies
Electronic Ballasts
D
D
D
D
D
D
D
Slew-Rate Comparator
Zero Power Detect to Prevent OVP During
Light Load Conditions
Accurate Internal V REF for Tight Output
Regulation
Two UVLO Options
Overvoltage Protection (OVP),
Open-Feedback Protection and Enable
Circuits
± 750-mA Peak Gate Drive Current
Low Start-Up and Operating Currents
Lead (Pb)-Free Packages
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
UCC38050
1
2
VO_SNS VCC
COMP
8
3
4
MULTIN
CS
DRV
GND
ZCD
7
6
5
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.
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.
www.ti.com
Copyright ? 2009, Texas Instruments Incorporated
1
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相关代理商/技术参数
UCC28051P 功能描述:功率因数校正 IC for low-med pwr app w/IEC1000-3-2 cmplnc RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel
UCC28051PE4 功能描述:功率因数校正 IC for low-med pwr app w/IEC1000-3-2 cmplnc RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel
UCC2805D 功能描述:电流型 PWM 控制器 Low-Power BiCMOS Current-Mode PWM RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14
UCC2805D 制造商:Texas Instruments 功能描述:IC CURRENT MODE PWM 10V 8-SOIC 制造商:Texas Instruments 功能描述:IC, CURRENT MODE PWM, 10V, 8-SOIC
UCC2805DG4 功能描述:电流型 PWM 控制器 Low-Power BiCMOS Current-Mode PWM RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14
UCC2805DTR 功能描述:电流型 PWM 控制器 Low-Power BiCMOS Current-Mode PWM RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14
UCC2805DTRG4 功能描述:电流型 PWM 控制器 Low-Power BiCMOS Current-Mode PWM RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14
UCC2805-EP 制造商:未知厂家 制造商全称:未知厂家 功能描述:Military Enhanced Plastic Low-Power BICMOS Current-Mode PWM