1

FEATURES

DESCRIPTION

APPLICATIONS

SIMPLIFIED APPLICATION DIAGRAM

VDG−03170

5

13

12

16

15

1

2

3

KFF

RT

LVBP

SGND

VDD

HDRV

SW

DBP

4

PGD

11

ILIM

TPS40070PWP

6

SS

7

FB

8

COMP

14

BOOST

LDRV

10

PGND

9

Powergood

TPS40070

TPS40071

HIGH-EFFICIENCY MIDRANGE INPUT SYNCHRONOUS

BUCK CONTROLLER WITH VOLTAGE FEED-FORWARD

2

• Operation Over 4.5-V to 28-V Input Range

• Programmable Fixed-Frequency up to 1-MHz

The TPS4007x is a mid voltage, wide input (4.5 V to

28 V), synchronous, step-down converter.

Voltage-Mode Controller

• Predictive Gate Drive™ With Anti-Cross

The TPS4007x offers design flexibility with a variety

Conduction Circuitry

of user programmable functions, including; soft-start,

UVLO, operating frequency, voltage feed-forward and

• <1% Internal 700-mV Reference

high-side FET sensed short circuit protection.

• Internal Gate Drive Outputs for High-Side and

The TPS4007x incorporates MOSFET gate drivers for

Synchronous N-Channel MOSFETs

external

N-channel

high-side

and

synchronous

• 16-Pin PowerPAD™ Package

rectifier (SR) MOSFETs. Gate drive logic incorporates

• Thermal Shutdown Protection

predictive anti-cross conduction circuitry to prevent

simultaneous high-side and synchronous rectifier

• TPS40070: Source Only

conduction, while minimizing to eliminating current

• TPS40071: Source/Sink

flow in the body diode of the SR FET. The TPS40071

• Programmable High-Side Sense Short Circuit

allows the supply output to sink current at all times.

Protection

The TPS40070 implements a source-only power

supply.

• Power Modules

• Networking/Telecom

• PCI Express

• Industrial

• Servers

1

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.

2

Predictive Gate Drive, PowerPAD are trademarks of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2003–2009, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.