50

55

60

65

70

75

80

85

90

95

100

0

0.4

0.8

1.2

1.6

2

2.4

Output Current (A)

G031

TPS55340

VIN

EN

SW

SW

SW

FREQ

SS

COMP

SYNC

FB

PGND

PGND

PGND

L

D

AGND

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TPS55340-EP

SLVSCG7 – JULY 2014

TPS55340-EP Integrated 5-A, 40-V Wide Input Range

Boost/SEPIC/Flyback DC-DC Regulator

1 Features

2 Applications

1

•

Internal 5-A, 40-V Low-Side MOSFET Switch

•

3.3-V, 5-V, 12-V, 24-V Power Conversion

•

2.9-V to 32-V Input Voltage Range

•

Boost, SEPIC, and Flyback Topologies

•

±0.7% Reference Voltage

•

Thunderbolt Port, Power Docking for Tablets and

Portable PCs

•

0.5-mA Operating Quiescent Current

•

Industrial Power Systems

•

2.7-µA Shutdown Supply Current

•

ADSL Modems

•

Fixed Frequency Current Mode PWM Control

•

Frequency Adjustable from 100 kHz to 1.2 MHz

3 Description

•

Synchronization Capability to External Clock

The TPS55340-EP is a monolithic, non-synchronous

•

Adjustable Soft-Start Time

switching regulator with integrated 5-A, 40-V power

•

Pulse-Skipping for Higher Efficiency at Light

switch. It can be configured in several standard

switching-regulator

topologies,

including

boost,

Loads

SEPIC and isolated flyback. The device has a wide

•

Cycle-by-Cycle Current Limit, Thermal Shutdown,

input voltage range to support applications with input

and UVLO Protection

voltage from multi-cell batteries or regulated 3.3-, 5-,

•

Supports Defense, Aerospace, and Medical

12-, and 24-V power rails.

Applications

The TPS55340-EP regulates the output voltage with

–

Controlled Baseline

current mode pulse width modulation (PWM) control,

–

One Assembly and Test Site

and

has

an

internal

oscillator.

The

switching

frequency of PWM is set by either an external resistor

–

One Fabrication Site

or by synchronizing to an external clock signal. The

–

Available in Military (–55°C to 125°C)

user can program the switching frequency from

Temperature Range

100 kHz to 1.2 MHz.

–

Extended Product Life Cycle

The

device

features

a

programmable

soft-start

–

Extended Product-Change Notification

function to limit inrush current during start-up and has

other built-in protection features including cycle-by-

–

Product Traceability

cycle over current limit and thermal shutdown.

Device Information(1)

ORDER NUMBER

PACKAGE

BODY SIZE (NOM)

TPS55340MRTETEP

WQFN (16)

3.00 mm × 3.00 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

4 Typical Application (Boost)

Efficiency vs Output Current

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.