Power Supply

110VAC->240VAC

TAS5630

30V

TPA3221

Audio Source

And Control

RIGHT

LEFT

LC Filter

LC Filter

RESET

FAULT

1SPW

FREQ_ADJ

OSCM/P

OTW_CLIP

Modulation Mode Select

Switching Frequency Select

5V

Master/Slave Synchronization

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PBTL

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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. ADVANCE INFORMATION for pre-production products; subject to

change without notice.

TPA3221

SLASEE9 – JUNE 2017

TPA3221 100-W Stereo, 200-W Mono HD-Audio, Analog-Input, Class-D Amplifier

1

1 Features

1

•

Wide 7-V to 30-V Supply Voltage Operation

•

Stereo (2 x BTL) and Mono (1 x PBTL) Operation

•

Output Power at 10% THD+N

–

100-W Stereo into 4 Ω in BTL Configuration

–

130-W Stereo into 3 Ω in BTL Configuration

–

200-W Mono into 2 Ω in PBTL Configuration

•

Output Power at 1% THD+N

–

80-W Stereo into 4 Ω in BTL Configuration

–

100-W Stereo into 3 Ω in BTL Configuration

–

160-W Mono into 2 Ω in PBTL Configuration

•

5-V Gate Drive or Built-in LDO for Optional Single-

Supply Operation

•

Closed-Loop Feedback Design

–

Signal Bandwidth up to 100 kHz for High-

Frequency Content From HD Sources

–

0.02% THD+N at 1 W into 4 Ω

–

60-dB PSRR (BTL, No Input Signal)

–

<75-µV Output Noise (A-Weighted)

–

>108-dB SNR (A-Weighted)

–

AD or 1SPW Modulation Schemes

•

Low-Power Operating Modes

–

Standby Modes: Mute and < 1 mA Shutdown

–

Low Idle-Current 1SPW Modulation Scheme

–

Single-Channel BTL Operation

•

Multiple Input Options to Simplify Pre-Amp Design

–

Differential or Single-Ended Analog Inputs

–

Selectable Gains: 18 dB, 24 dB, 30 dB, 34 dB

•

Integrated Protection Features: Undervoltage,

Overvoltage, Cycle-by-cycle Current Limit, Short

Circuit, Clipping Detection, Overtemperature

Warning and Shutdown, and DC Speaker

Protection

•

90% Efficient Class-D Operation (4

Ω)

•

Pin-Compatible Family of Devices with Voltage

and Power-Level Options

2 Applications

•

Wireless and Powered Speakers

•

Soundbars

•

Subwoofers

•

Bookshelf Stereo Systems

•

Professional and Public Address (PA) Speakers

3 Description

TPA3221 is a high-power Class-D amplifier with

amplifier that enables efficient operation at full-power,

idle and standby. The device features closed-loop

feedback with a bandwidth up to 100 kHz, which

provides low distortion across the audio band and

delivers excellent sound quality. The device operates

with either AD or low idle-current 1SPW modulation,

and can drive up to 2 x 100 W into 4-Ω load or 1 x

200 W into 2-Ω load.

The TPA3221 features a single-ended or differential

four selectable gains: 18 dB, 24 dB, 30 dB and 34

dB. The TPA3221 also achieves >90% efficiency, low

idle power (< 0.5 W), and ultra-low standby power (<

0.1 W). This is made possible through the use of 70-

mΩ MOSFETs, an optimized gate drive scheme and

low-power operating modes. TPA3221 includes a

built-in LDO for easy integration in single-power-

supply systems. To further simplify the design, the

device

integrates

essential

protection

features,

including undervoltage, overvoltage, cycle-by-cycle

current

limit,

short

circuit,

clipping

detection,

overtemperature warning and shutdown, as well as

dc speaker protection.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPA3221

HTSSOP (44)

6.10 mm x 14.00 mm

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

the end of the datasheet.

Simplified Schematic