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.