TPA3113D2PWPRG4中文资料德州仪器数据手册PDF规格书

1 Features

1• 6-W/ch into an 8-Ω Loads at 10% THD+N From a

10-V Supply

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

a 10-V Supply

• 87% Efficient Class-D Operation Eliminates Need

for Heat Sinks

• Wide Supply Voltage Range Allows Operation

from 8 V to 26 V

• Filter-Free Operation

• SpeakerGuard™ Speaker Protection Includes

Adjustable Power Limiter Plus DC Protection

• Flow-Through Pinout Facilitates Easy Board

Layout

• Robust Pin-to-Pin Short-Circuit Protection and

Thermal Protection With Auto Recovery Option

• Excellent THD+N and Pop-Free Performance

• Four Selectable, Fixed Gain Settings

• Differential Inputs

2 Applications

• Televisions

• Consumer Audio Equipment

• Monitors

3 Description

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

Class-D audio power amplifier for driving bridged-tied

stereo speakers. Advanced EMI Suppression

Technology enables the use of inexpensive ferrite

bead filters at the outputs while meeting EMC

requirements. SpeakerGuard™ speaker protection

circuitry includes an adjustable power limiter and a

DC detection circuit. The adjustable power limiter

allows the user to set a virtual voltage rail lower than

the chip supply to limit the amount of current through

the speaker. The DC detect circuit measures the

frequency and amplitude of the PWM signal and

shuts off the output stage if the input capacitors are

damaged or shorts exist on the inputs.

The TPA3113D2 can drive stereo speakers as low as

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

eliminates the need for an external heat sink when

playing music.

The outputs are also fully protected against shorts to

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

protection and thermal protection includes an autorecovery

feature.