TPS54611, TPS54612

TPS54613, TPS54614

TPS54615, TPS54616

SLVS400C − AUGUST 2001 − REVISED APRIL 2005

3-V TO 6-V INPUT, 6-A OUTPUT SYNCHRONOUS BUCK PWM

SWITCHER WITH INTEGRATED FETs (SWIFT

™)

Typical Size

6,6 mm X 9,8 mm

FEATURES

Efficiency at 6-A Continuous Output Source

and Sink

Output Voltage Devices With 1.0% Initial

Accuracy

Minimal Component Count

550 kHz or Adjustable 280 kHz to 700 kHz

Thermal Shutdown

Total Cost

APPLICATIONS

Power Distributed at 5 V or 3.3 V

Performance DSPs, FPGAs, ASICs and

Microprocessors

Communications Infrastructure

DESCRIPTION

The SWIFT™ family of dc/dc regulators, the TPS54611,

TPS54612, TPS54613, TPS54614, TPS54615 and

TPS54616 low-input voltage high-output current

synchronous-buck PWM converters integrate all required

active components. Included on the substrate are true,

high-performance, voltage error amplifiers that provide

high performance under transient conditions; an

under-voltage-lockout circuit to prevent start-up until the

input voltage reaches 3 V; an internally and externally set

slow-start circuit to limit in-rush currents; and a power good

output useful for processor/logic reset, fault signaling, and

supply sequencing.

The TPS54611−6 devices are available in a thermally

enhanced 28-pin TSSOP (PWP) PowerPAD™ package,

which eliminates bulky heatsinks. TI provides evaluation

modules and the SWIFT™ designer software tool to aid in

quickly achieving high-performance power supply designs

to meet aggressive equipment development cycles.

VIN

PH

BOOT

PGND

VSENSE

Output

AGND

VBIAS

Input

TPS54614

SIMPLIFIED SCHEMATIC

50

55

60

65

70

75

80

85

90

95

100

01

2

3

456

Load Current − A

EFFICIENCY AT 350 kHz

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.

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.

www.ti.com

Copyright © 2001−2005, Texas Instruments Incorporated

PowerPAD and SWIFT are trademarks of Texas Instruments.