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FEATURES

CONTENTS

DESCRIPTION

APPLICATIONS

1

2

3

4

10

9

8

7

HDRV

SW

BOOT

LDRV

ENABLE

FB

COMP

VDD

TPS40192/3

5

6

BP5

PGD

11

GND

UDG−06063

ON/OFF

External Logic

Supply

5V or Less,

or BP5

TPS40192, TPS40193

SLUS719 – MARCH 2007

4.5V TO 18V INPUT 10 PIN SYNCHRONOUS BUCK CONTROLLER WITH POWER GOOD

• Input Operating Voltage Range: 4.5 V to 18 V

Device Ratings

2

• Up to 20 A Output Currents

Electrical Characteristics

4

• Supports Pre-Biased Outputs

Typical Characteristics

6

• 0.5% 0.591 V Reference

• 600 kHz (TPS40192) and 300 kHz (TPS40193)

Terminal Information

9

Switching Frequencies

Application Information

11

• Three Selectable Thermally Compensated

Design Example

17

Short Circuit Protection Levels

Additional References

27

• Hiccup Restart from Faults

• Internal 5-V Regulator

• High and Low side FET RDS

Sensing

TPS40192

and

TPS40193

are

cost-optimized

synchronous buck controllers that operate from 4.5 V

• 10-Pin 3 mm × 3 mm SON Package

to 18 V input. These controllers implement a

• Internal 4-ms Soft-Start Time

voltage-mode control architecture with the switching

• Thermal Shutdown Protection at 145°C

frequency fixed at either 600 kHz (TPS40192) or 300

kHz (TPS40193). The higher switching frequency

facilitates the use of smaller inductor and output

capacitors,

thereby

providing

a

compact

• Cable Modem CPE

power-supply

solution.

An

adaptive

anti-cross

• Digital Set Top Box

conduction scheme is used to prevent shoot through

• Graphics/Audio Cards

current in the power FETs.

• Entry Level and Mid-Range Servers

SIMPLIFIED APPLICATION DIAGRAM

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.

Copyright © 2007, 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.