Texas Instruments TPS62097 Handleiding

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TPS62097 2-A High Efficiency Step-Down Converter with iDCS-Control, Forced PWM

Mode and Selective Switching Frequency

1 Features

•New product available: TPS62851x, 6-V, 0.5-A / 1-

A / 2-A step-down converter in SOT583 package

•iDCS-control topology

•Forced PWM or power save mode

•Up to 97% efficiency

•2.5-V to 6.0-V input voltage

•0.8-V to V

IN

adjustable output voltage

•1.8-V and 3.3-V fixed output voltage

•±1% output voltage accuracy

•Hiccup short circuit protection

•Programmable soft start-up

•Output voltage tracking

•Selectable switching frequency

•100% duty cycle for lowest dropout

•Output discharge

•Power good output

•Thermal shutdown protection

•-40°C to 125°C operating junction temperature

•Available in 2-mm × 2-mm VQFN package

2 Applications

•Motor drives

•Programmable logic controllers (PLCs)

•Solid state drives (SSDs)

•Point of load (POL) regulators

3 Description

The TPS62097 device is a synchronous step-down

converter optimized for high efficiency and noise

critical applications. The devices focus on high

efficiency conversion over a wide output current

range. At medium to heavy loads, the converter

operates in PWM mode and automatically enters

Power Save Mode operation at light load. The

switching frequency is selectable in the range of 1.5

MHz to 2.5 MHz by an external resistor. iDCS-Control

is able to be operated in forced PWM mode for low

noise operation with a fixed switching frequency.

To address the requirements of system power rails,

the internal compensation circuit allows a large

selection of external output capacitor values in excess

of 150 µF. To control the inrush current during the

start-up, the device provides a programmable soft

start-up by an external capacitor connected to the

SS/TR pin. The SS/TR pin is also used in voltage

tracking configurations. The device integrates short

circuit protection, power good and thermal shutdown

features. The device is available in a 2-mm x 2-mm

VQFN package.

The new product, TPS62851x, offers reduced BOM

cost, smaller total solution size and other features.

Device Information

PART NUMBERPACKAGE

(1)

BODY SIZE (NOM)

TPS62097

VQFN (11)2.0 mm x 2.0 mmTPS6209718

TPS6209733

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

the end of the data sheet.

V

2.5V to 6.0V

IN

POWER GOOD

C2

22µF

R3

100k

V

1.8V/2A

OUT

L1

1.0µH

C1

10µF

C3

10nF

V

IN

TPS6209718

PVIN

EN

AVIN

SS/TR

AGND

MODE

SW

FB

VOS

PG

PGND

1.8-V Output, PWM/PSM Mode Application

Load (A)

Efficiency (%)

60

70

80

90

100

1m10m100m15

D003

V

IN

= 2.7 V

V

IN

= 3.3 V

V

IN

= 4.2 V

V

IN

= 5.0 V

1.8-V Output, PWM/PSM Mode Efficiency

www.ti.com

TPS62097

SLVSCD6A – DECEMBER 2015 – REVISED JANUARY 2021

Copyright ©2021 Texas Instruments Incorporated

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TPS62097

SLVSCD6A – DECEMBER 2015 – REVISED JANUARY 2021

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.

Product specificaties