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

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TPA3131D2, TPA3132D2

SLOS841B – SEPTEMBER 2013 – REVISED JANUARY 2015

TPA313xD2 4-W, 25-W Filter-Free Class-D Stereo Amplifier With AM Avoidance

1 Features

2 Applications

1

•

Supports Multiple Output Configurations

•

Laptop Computers and Ultrabooks

•

Flatpanel TV

–

2 × 4 W into a 8-

Ω BTL Load at 7.4 V

(TPA3131D2)

•

Consumer Audio Applications

–

2 × 25 W into a 8-

Ω BTL Load at 19 V

3 Description

(TPA3132D2)

The TPA313xD2 are efficient, stereo digital amplifier

•

Wide Voltage Range: 4.5 V to 26 V

power stages for driving speakers with up to

•

Automotive Load-Dump Compliant

2x42W/4

Ω peak power. TPA3131/32D2 operates

•

Efficient Class-D Operation

heatsink-free with cooling to PCB through the bottom

side PowerPAD™ with sustained output power from 2

–

>90% Power Efficiency Combined With Low

× 4 W / 8

Ω (TPA3131D2) to 2 × 25 W / 8 Ω

Idle Loss for Heat Sink free Operation

(TPA3132D2).

–

Advanced Modulation Schemes

The

TPA313xD2

advanced

oscillator/PLL

circuit

•

Multiple Switching Frequencies

employs a multiple switching frequency option to

–

AM Avoidance

avoid AM interferences; this is achieved together with

–

Master and Slave Synchronization

an option of Master and Slave synchronization,

making it possible to synchronize multiple devices.

–

Up to 1.2-MHz Switching Frequency

•

Feedback Power Stage Architecture With High

The TPA313xD2 are fully protected against faults with

PSRR Reduces PSU Requirements

short-circuit protection and thermal protection as well

as overvoltage, undervoltage, and DC protection.

•

Programmable Power Limit

Faults are reported back to the processor to prevent

•

Differential and Single-Ended Inputs

devices

from

being

damaged

during

overload

•

Stereo and Mono Mode With Single-Filter Mono

conditions.

Configuration

For feature compatible devices see: PowerPAD up

•

Single Power Supply Reduces Component Count

device 2 × 50-W TPA3116D2, PowerPAD down 2 ×

•

Integrated Self-Protection Circuits Including

15-W TPA3130D2 and 2 × 30-W TPA3118D2.

Overvoltage, Undervoltage, Overtemperature, DC-

Device Information(1)

Detect, and Short Circuit With Error Reporting

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Thermally Enhanced Package

TPA3131D2

–

32-Pin VQFN Pad-Down

VQFN (32)

5.00 mm × 5.00 mm

TPA3132D2

•

–40°C to 85°C Ambient Temperature Range

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

the end of the datasheet.

Simplified Application Circuit

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.