1

FEATURES

DESCRIPTION

APPLICATIONS

LINP

LINN

RINP

RINN

SD

SD

Fault

Fault

PLIMIT

PBTL

PVCC

8to26V

1 F

m

OUTNL

FERRITE

BEAD

FILTER

OUTPL

6W

FERRITE

BEAD

FILTER

FERRITE

BEAD

FILTER

8W

OUTR+

OUTR-

OUTL+

OUTL-

Audio

Source

TPA3113D2

GAIN0

GAIN1

OUTNR

FERRITE

BEAD

FILTER

OUTPR

6W

8W

FERRITE

BEAD

FILTER

FERRITE

BEAD

FILTER

TPA3113D2

6-W FILTER-FREE STEREO CLASS-D AUDIO POWER AMPLIFIER WITH

SPEAKERGUARD™

2

• 6-W/ch into an 8-Ω Loads at 10% THD+N From

a 10-V Supply

The TPA3113D2 is a 6-W (per channel) efficient,

Class-D audio power amplifier for driving bridged-tied

• 12-W into a 4-Ω Mono Load at 10% THD+N

stereo

speakers.

Advanced

EMI

Suppression

From a 10-V Supply

Technology enables the use of inexpensive ferrite

• 87% Efficient Class-D Operation Eliminates

bead filters at the outputs while meeting EMC

Need for Heat Sinks

requirements. SpeakerGuard™ speaker protection

• Wide Supply Voltage Range Allows Operation

circuitry includes an adjustable power limiter and a

from 8 V to 26 V

DC detection circuit. The adjustable power limiter

allows the user to set a "virtual" voltage rail lower

• Filter-Free Operation

than the chip supply to limit the amount of current

• SpeakerGuard™ Speaker Protection Includes

through the speaker. The DC detect circuit measures

Adjustable Power Limiter plus DC Protection

the frequency and amplitude of the PWM signal and

• Flow Through Pin Out Facilitates Easy Board

shuts off the output stage if the input capacitors are

damaged or shorts exist on the inputs.

Layout

• Robust Pin-to-Pin Short Circuit Protection and

The TPA3113D2 can drive stereo speakers as low as

Thermal Protection with Auto Recovery Option

4

Ω. The high efficiency of the TPA3113D2, 87%,

eliminates the need for an external heat sink when

• Excellent THD+N / Pop-Free Performance

playing music.

• Four Selectable, Fixed Gain Settings

The outputs are also fully protected against shorts to

• Differential Inputs

GND, VCC, and output-to-output. The short-circuit

protection

and

thermal

protection

includes

an

auto-recovery feature.

• Televisions

• Consumer Audio Equipment

• Monitors

Figure 1. TPA3113D2 Simplified Application Schematic

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

SpeakerGuard, PowerPad are trademarks of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2009, 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.