Datasheet > UCC29910A_15

UCC29910A_15

更新时间： 2024-09-21 01:08:51

品牌	Logo	应用领域
德州仪器 - TI		功率因数校正
页数	文件大小	规格书
23页	617K
描述
Buck PFC Controller

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UCC29910A_15 数据手册

UCC29910A

www.ti.com

SLUSAK8A –MAY 2011–REVISED JUNE 2011

Buck PFC Controller

Check for Samples: UCC29910A

FEATURES

DESCRIPTION

The UCC29910A Buck Power Factor Correction

•

Buck Power Factor Correction for High

Efficiency Across Line

Low Off-Line Startup Current, With SmartStart

Algorithm for Fast Startup With Soft-Start

Compatible With Resistive or Pass Transistor

Fed Startup from the AC Line

Low Power SmartBurst Mode for Standby and

Light-Load Conditions

Current Sense Inputs for PFC control and

Overload Protection

Line Sense UVLO

Sense and Drive Control for External Startup

Depletion Mode FET

Latching Fault Input Pin

(PFC) controller provides relatively flat

high-efficiency performance across universal line for

designers requiring a high power factor (>0.9) and

wishing to meet the requirements of IEC 61000-3-2.

Based on a buck topology, inherent inrush current

limiting eliminates the need for additional

components. With a typical bus voltage of 84 V, the

topology is ideally suited for use with low voltage

stress downstream regulation/isolation power trains,

such as half-bridge stages controlled by the

UCC29900, (Texas Instruments Literature Number,

•

SLUS923).

This

combination

offers

low

common-mode noise generation allowing reduced

filtering and exceptionally high conversion efficiency.

•

The UCC29910A incorporates AC line UVLO and

controlled soft start for fast start-up. Enhanced

light-load efficiency is achieved through advanced

management algorithms for best-in-class no-load and

light-load performance.

APPLICATIONS

•

High Efficiency AC-DC Adapters

Low Profile and High Density Adapters

SIMPLIFIED APPLICATION DIAGRAM

V_BULK

EMC

VAC

FILTER

HS BULK

SENSE

DRIVER

LINESNS VDD

11 NC

TST PFCDRV

UCC29910APW

BIAS

SUPPLY

BIASSNS

12 BIASCTRL

VBULK

NC REFIN VSS FAULT

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 the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...23

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