1 Features

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

• Output Power at 10% THD+N

– 60-W Stereo Continuous into 8 Ω in BTL

– 110-W Stereo Peak into 4 Ω in BTL

• Output Power at 1% THD+N

– 50-W Stereo Continuous into 8 Ω in BTL

– 89-W Stereo Peak into 4 Ω in BTL

• 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)

– <72-μV Output Noise (A-Weighted)

– >108-dB SNR (A-Weighted)

– AD or HEAD Modulation Schemes

• Low-Power Operating Modes

– Standby Modes: Mute and < 1 mA Shutdown

– Low Idle-Current HEAD 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: Undervoltage, Cycle-bycycle

Current Limit, Short Circuit, Clipping

Detection, Overtemperature Warning and

Shutdown, and DC Speaker Protection

• 90% Efficient Class-D Operation (4 Ω)

• Thermal Pad Located on Package Bottom

• Pin-Compatible Family of Devices with Voltage

and Power-Level Options

2 Applications

• Bluetooth and Wi-Fi™ Speakers

• Sound Bars

• Subwoofers

• Bookshelf Stereo Systems

• Professional and Public Address (PA) Speakers

3 Description

TPA3220 is a pad-down Class-D 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 HEAD (High Efficiency

AD) modulation and can drive up to 2 x 60 W

continuously or 2 x 110 W peak into 4-Ω load with the

thermal pad on bottom connected to the PCB.

The TPA3220 features a single-ended or differential

analog-input interface that supports up to 2 VRMS with

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

dB. The TPA3220 also achieves >90% efficiency, low

idle power (<0.25 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. TPA3220 includes a

built-in LDO for easy integration in single-powersupply

systems. To further simplify the design, the

device integrates essential protection features

including undervoltage, cycle-by-cycle current limit,

short circuit, clipping detection, overtemperature

warning and shutdown, as well as DC speaker

protection.