PWM

Logic

Gate

Drive

Gate

Drive

PVCCL

PVCCL

GVDD

PVCCL

PVCCL

BSPL

PGND

OUTPL

OUTNL

PGND

GVDD

BSNL

PWM

Logic

Gate

Drive

Gate

Drive

PVCCL

PVCCL

GVDD

PVCCL

PVCCL

BSNR

PGND

OUTNR

OUTPR

PGND

GVDD

BSPR

LINP

LINN

RINP

RINN

UVLO/OVLO

SC Detect

DC Detect

Thermal

Detect

Startup Protection

Logic

Biases and

References

FAULT

SD

GAIN0

PLIMIT

AGND

AVCC

GAIN1

Gain

Control

TTL

Buffer

Ramp

Generator

AVDD

GVDD

GVDD

LDO

Regulator

Gain

Control

PLIMIT

PLIMIT

Reference

PBTL

Gain

Control

TTL

Buffer

PBTL

Select

PBTL Select

PBTL Select

OUTPL FB

OUTNL FB

OUTNN FB

OUTNP FB

OUTPR FB

OUTNR FB

OUTNL FB

OUTPL FB

PLIMIT

TPA3110D2

www.ti.com

SLOS528E – JULY 2009 – REVISED NOVEMBER 2015

9 Detailed Description

9.1 Overview

The TPA3110D2 is a 15-W Class-D audio power amplifier. It is designed to drive BTL stereo speakers. This

device is able to use inexpensive ferrite bead filters at the outputs while meeting EMC requirements. The

TPA3110D2 can drive stereo speakers as low as 4

Ω and its high efficiency eliminates the need for an external

heat sink. The device is fully protected against shorts to GND, VCC and output-to-output. The short-circuit

protection and thermal protection includes an auto-recovery feature.

9.2 Functional Block Diagram

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