TPS54618-Q1

EN

PH

VSENSE

PWRGD

RT/CLK

COMP

BOOT

VIN

SS

AGND

GND

PowerPad

I - Output Current - A

O

50

55

60

65

70

75

80

85

90

95

100

0

1

2

3

4

5

6

3 Vin

5 Vin

f = 500kHz

s

Vout = 1.8V

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TPS54618-Q1

SLVSBY9D – AUGUST 2013 – REVISED JANUARY 2016

TPS54618-Q1 2.95-V to 6-V Input, 6-A Output, 2-MHz,

Synchronous Step-Down SWIFT™ Switcher

1 Features

3 Description

The TPS54618-Q1 device is a full-featured 6-V, 6-A,

1

•

Qualified for Automotive Applications

synchronous step-down current-mode converter with

•

AEC Q-100 Qualified With the Following Results:

two integrated MOSFETs.

–

Device Temperature Grade 1: Ambient

The

TPS54618-Q1

enables

small

designs

by

Operating Temperature Range of –40°C to

integrating the MOSFETs, implementing current-

125°C

mode control to reduce external component count,

–

Device HBM ESD Classification Level H2

reducing inductor size by enabling up to 2-MHz

switching frequency, and minimizing the IC footprint

–

Device CDM ESD Classification Level C4B

with a small, 3-mm × 3-mm, thermally-enhanced

•

Two 12-m

Ω (Typical) MOSFETs for High

WQFN package.

Efficiency at 6-A Loads

The TPS54618-Q1 provides accurate regulation for a

•

300-kHz to 2-MHz Switching Frequency

variety of loads with an accurate ±1% voltage

•

0.8-V ±1% Voltage Reference Over Temperature

reference (VREF) over temperature.

(–40°C to 150°C)

Efficiency is maximized through the integrated

•

Synchronizes to External Clock

12-m

Ω MOSFETs and 515-μA typical supply current.

•

Adjustable Slow-Start and Sequencing

Using the enable pin, shutdown supply current is

•

UV and OV Power-Good Output

reduced to 5.5-µA by entering a shutdown mode.

•

Thermally-Enhanced 3-mm × 3-mm, 16-pin

Undervoltage lockout is internally set at 2.6 V, but

WQFN Package

can be increased by programming the threshold with

a resistor network on the enable pin. The output-

2 Applications

voltage startup ramp is controlled by the slow-start

pin. An open-drain power-good signal indicates the

•

Low-Voltage, High-Density Power Systems

output is within 93% to 107% of its nominal voltage.

•

Point-of-Load Regulation for High-Performance

Frequency foldback and thermal shutdown protect the

DSPs, FPGAs, ASICs, and Microprocessors

device during an overcurrent condition.

•

Broadband, Networking, and Optical

TPS54618-Q1 is supported in the SwitcherPro™

Communications Infrastructure

software tool at www.ti.com/switcherpro.

For more SWIFT™ documentation, see the TI

website at www.ti.com/swift.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS54618-Q1

WQFN (16)

3.00 mm × 3.00 mm

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

the end of the data sheet.

Simplified Schematic

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.