TAS5630

TPA3128D2

Audio

Source

And Control

RIGHT

LEFT

LC

LC

PBTL

DETECT

SD

FAULT

AM2,1,0

GAIN/SLV

PLIMIT

Power Limit

SYNC

Capable of synchronizaing to other devices

PVCC

AVCC

Power Supply

4.5V-26V

Separate Power

Supply (Optional)

4.5V-26V

MONO

DETECT

MUTE

AM Avoidance Control

GAIN control and Master/Slave setting

Copyright © 2016, Texas Instruments Incorporated

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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.

TPA3128D2

SLOS941A – MAY 2016 – REVISED DECEMBER 2016

TPA3128D2 2x30-W Class-D Amplifier With Low Idle Power Dissipation

1

1 Features

1

•

Supports Multiple Output Configurations

–

2 × 30 W Into a 8-Ω BTL Load at 24 V

(TPA3128D2)

•

Wide Voltage Range: 4.5 V to 26 V

•

Efficient Class-D Operation

–

Very Low Idle Current: <23 mA for

recommended LC filter configurations

–

Greater than 90% Power Efficiency Combined

With Low Idle Loss Greatly Eliminates Need

for Heat Sink

–

Adaptive Modulation Schemes based on

Output Power

–

Smart Amplifier Drivers to Reduce the

Requirement for RC Snubbers

•

Multiple Switching Frequencies

–

AM Avoidance

–

Master and Slave Synchronization

–

300-KHz to 1.2-MHz Switching Frequency

•

Feedback Power-Stage Architecture With High

PSRR Reduces PSU Requirements

•

Programmable Power Limit

•

Parallel BTL Mode and Mono-Channel Mode

Support

•

Supports Both Single and Dual Power Supply

Modes

•

Integrated Self-Protection Circuits Including

Overvoltage, Undervoltage, Overtemperature, DC-

Detect, and Short Circuit With Error Reporting

•

Thermally Enhanced Packages

–

DAP (32-Pin HTSSOP Pad Down for

TPA3128D2)

2 Applications

•

Bluetooth/Wireless Speakers

•

Soundbars

•

Mini-Micro Component, Docks

•

LCD/LED TVs

•

Home Theaters

3 Description

The TPA3128D2 devices are stereo efficient, digital

amplifier power stage for driving speakers up to 60 W

/ 2

Ω in PBTL mode. The TPA3128D2 has low idle

power loss and helps to extend the battery life of

Bluetooth/Wireless

speakers

and

other

battery-

powered audio systems. The high efficiency of the

TPA3128D2 device allows it to do 2 × 30 W without

external heat sink on a dual layer PCB. This device

proposed an efficiency boost Mode, which can

dynamically reduced the current ripple of the external

LC filter and the idle current .

The

TPA3128D2

advanced

oscillator/PLL

circuit

employs a multiple switching frequency option to

avoid AM interferences, which is achieved together

with an option of either master or slave option,

making it possible to synchronize multiple devices.

The TPA3128D2 devices are fully protected against

faults

with

short-circuit

protection

and

thermal

protection as well as overvoltage, undervoltage, and

DC protection. Faults are reported back to the

processor to prevent devices from being damaged

during overload conditions.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPA3128D2

DAP (32)

11.00 mm × 6.20 mm

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

the end of the datasheet.

Figure 1. Simplified Application Circuit