TPS40053 Datasheet

IC型號：
TPS40053
PDF描述：
WIDE-INPUT SYNCHRONOUS BUCK CONTROLLER
文件大?。?/label>
273.31KB
PDF頁數(shù)：
30頁
芯片廠家：
TI

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TPS40050

TPS40051

TPS40053

SLUS540F 鈭?DECEMBER 2002 鈭?REVISED JUNE 2004

WIDE INPUT SYNCHRONOUS

BUCK CONTROLLER

FEATURES

Operating Input Voltage 8 V to 40 V

Input Voltage Feed-Forward Compensation

< 1 % Internal 0.7-V Reference

Programmable Fixed-Frequency Up to 1 MHz

Voltage Mode Controller

Internal Gate Drive Outputs for High-Side and

Synchronous N-Channel MOSFETs

16-Pin PowerPADt Package (胃

= 2擄C/W)

Thermal Shutdown

Externally Synchronizable

Programmable High-Side Current Limit

Programmable Closed-Loop Soft-Start

TPS40050 Source Only

TPS40051 Source/Sink

TPS40053 Source/Sink With V

OUT

Prebias

DESCRIPTION

The TPS4005x is a family of high-voltage, wide input

(8 V to 40 V), synchronous, step-down converters.

The TPS4005x family offers design flexibility with a

variety of user programmable functions, including

soft-start, UVLO, operating frequency, voltage feed-

forward, high-side current limit, and loop compensation.

The TPS4005x are also synchronizable to an external

supply. They incorporate MOSFET gate drivers for

external N-channel high-side and synchronous rectifier

(SR) MOSFETs. Gate drive logic incorporates

anti-cross conduction circuitry to prevent simultaneous

high-side and synchronous rectifier conduction.

The TPS4005x uses voltage feed-forward control

techniques to provide good line regulation over the wide

(4:1) input voltage range, and fast response to input line

transients with near constant gain with input variation

which eases loop compensation.

The externally programmable current limit provides

pulse-by-pulse current limit, as well as hiccup mode

operation utilizing an internal fault counter for longer

duration overloads.

APPLICATIONS

Power Modules

Networking/Telecom

Industrial

Servers

SIMPLIFIED APPLICATION

VIN

TPS40050PWP

KFF

ILIM

BP5

SYNC

SGND

SS/SD

VFB

COMP

VIN

BOOST

HDRV

BP10

LDRV

PGND

VOUT

鈭?/div>

UDG鈭?2130

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.

PowerPADt is trademark of Texas Instruments.

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.

錚?/div>

2002, 2004, Texas Instruments Incorporated

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