LC Filter

LC Filter

Left

Right

4.5V-26V

PSU

Audio Source

Left

Right

Audio Processor

And control

TPA3131D2

TPA3132D2

AM/FM Avoidance

Control

FAULTZ

SDZ

MUTE

Sync

Capable of synchronizing to other devices

GAIN / SLV

GAIN control and Master/Slave setting

AM2,1,0

PLIMIT

Power Limit

PBTL

Detect

TPA3131D2

TPA3132D2

www.ti.com

SLOS841 – JULY 2013

4W, 25W Filter-Free Class-D Stereo Amplifier with AM Avoidance

Check for Samples: TPA3131D2, TPA3132D2

1

FEATURES

DESCRIPTION

The

TPA3131/32D2

are

efficient,

stereo

digital

2

•

Supports Multiple Output Configurations

amplifier power stages for driving speakers with up to

–

2×4-W into a 8-

Ω BTL Load at 7.4 V

2x42W/4

Ω peak power. TPA3131/32D2 operates

(TPA3131D2)

heatsink-free with cooling to PCB through the bottom

–

2×25-W into a 8-

Ω BTL Load at 19 V

side Power-Pad with sustained output power from

2x4W/8

Ω (TPA3131D2) to 2x25W/8Ω (TPA3132D2).

(TPA3132D2)

•

Wide Voltage Range: 4.5 V – 26 V

The TPA3131/32D2 advanced oscillator/PLL circuit

employs a multiple switching frequency option to

•

Automotive Load-Dump Compliant

avoid AM interferences; this is achieved together with

•

Efficient Class-D Operation

an option of Master/Slave option, making it possible

–

>90% Power Efficiency Combined with Low

to synchronize multiple devices.

Idle Loss for Heat Sink free Operation

The TPA3131/32D2 are fully protected against faults

–

Advanced Modulation Schemes

with short-circuit protection and thermal protection as

•

Multiple Switching Frequencies

well

as

over-voltage,

under-voltage

and

DC

protection. Faults are reported back to the processor

–

AM Avoidance

to prevent devices from being damaged during

–

Master/Slave Synchronization

overload conditions.

–

Up to 1.2 MHz Switching Frequency

For feature compatible devices see: Power Pad up

•

Feedback Power Stage Architecture with High

device 2x50W TPA3116D2, Power Pad down 2x15W

PSRR Reduces PSU Requirements

TPA3130D2 and 2x30W TPA3118D2.

•

Programmable Power Limit

Simplified Application Circuit

•

Differential/Single-Ended Inputs

•

Stereo and Mono Mode with Single Filter Mono

Configuration

•

Single Power Supply Reduces Component

Count

•

Integrated Self-Protection Circuits Including

Over-Voltage, Under-Voltage, Over-

Temperature, DC-Detect, and Short Circuit

with Error Reporting

•

Thermally Enhanced Package

–

32-Pin QFN Pad-Down

DEVICE

POWER

QFN 32-PIN

•

–40°C to 85°C Ambient Temperature Range

TPA3131D2

2 x 4W/8

Ω

Pad down

TPA3132D2

2 x 25W/8

Ω

Pad down

APPLICATIONS

•

Laptop Computers and Ultrabooks

•

Flatpanel TV

•

Consumer Audio Applications

1

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.

2

PowerPAD is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2013, 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.