Datasheet > UCC28050_13

UCC28050_13

更新时间： 2024-09-15 12:02:03

品牌	Logo	应用领域
德州仪器 - TI		功率因数校正控制器
页数	文件大小	规格书
32页	1054K
描述
TRANSITION MODE PFC CONTROLLER

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数据手册

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UCC28050_13 数据手册

UCC28050, UCC28051

UCC38050, UCC38051

SLUS515F−SEPTEMBER 2002 − REVISED MARCH 2009

TRANSITION MODE PFC CONTROLLER

APPLICATIONS

FEATURES

Switch-Mode Power Supplies for Desktops,

Transition Mode PFC Controller for Low

Implementation Cost

Monitors, TVs and Set Top Boxes (STBs)

AC Adapter Front-End Power Supplies

Electronic Ballasts

Industry Pin Compatibility With Improved

Feature Set

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

Two UVLO Options

Overvoltage Protection (OVP),

Open-Feedback Protection and Enable

Circuits

error processing,

generating a current command proportional to the

input voltage, current-sense (PWM)

simple multiplier for

750-mA Peak Gate Drive Current

Low Start-Up and Operating Currents

Lead (Pb)-Free Packages

comparator, PWM logic and a totem-pole driver

for driving an external FET.

SIMPLIFIED APPLICATION DIAGRAM

UCC38050

VO_SNS VCC

COMP

DRV

MULTIN

GND

ZCD

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

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