60-W stereo, 110-W mono, 7- to 32-V, analog input Class-D audio amplifier w/ low idle, pad-down


Product details


Audio input type Analog Input Architecture Class-D Speaker channels (Max) Stereo Power stage supply (Max) (V) 30 Power stage supply (Min) (V) 7 Load (Min) (ohms) 1 Output power (W) 100 SNR (dB) 108 THD + N @ 1 kHz (%) 0.02 Iq (Typ) (mA) 15 Control interface Hardware Closed/open loop Closed Analog supply (Min) (V) 5 Analog supply (Max) (V) 30 PSRR (dB) 60 Operating temperature range (C) -40 to 85 open-in-new Find other Speaker amps

Package | Pins | Size

HTSSOP (DDW) 44 85 mm² 14 x 6.1 open-in-new Find other Speaker amps


  • 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-by-cycle 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
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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-power-supply 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.

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Technical documentation

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Type Title Date
* Data sheet TPA3220 60-W Stereo, 110-W Peak HD Analog-Input, Pad-Down Class-D Amplifier datasheet (Rev. B) Aug. 13, 2018
User guide TPA3220 Evaluation Module User's Guide (Rev. A) Aug. 29, 2019
User guide TPA3220 Evaluation Module Micro User's Guide (Rev. A) Jul. 11, 2018
More literature High-Power Audio Amplifiers TPA322x/4x/5x Dec. 01, 2017
Application note High Efficiency AD (HEAD) Modulation Oct. 18, 2017
Application note LC Filter Design (Rev. A) Nov. 09, 2016

Design & development

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Hardware development

document-generic User guide
The TPA3220EVM HD-Audio evaluation module demonstrates the TPA3220 pad-down integrated circuit from Texas Instruments. TPA3220 is an ultra-low idle-loss Class-D amp which keeps your system cooler and your battery playing longer while supporting 100kHz high resolution audio and features single-rail (...)
  •  Stereo HD Audio evaluation module
  •  Integrated protection system (short circuit, clip and thermal)
  •  Device integrated support for Single-Ended (SE) and Differential analog input signals
  •  BTL and PBTL output configurations supported
  •  Double-sided, plated-through, 2oz. Cu 4 layer PCB layout
  •  Convenient XLR (...)
document-generic User guide
The TPA3220EVM-MICRO is 60x80 mm making it the smallest evaluation platform for a 2x 100W amplifier with no heatsink. The board features the TPA3220 device, which is an analog input Class-D amplifier with ultra-low idle losses and >90% efficiency allowing the PCB to become the heatsink (no bulky (...)
  • Smallest 2x 100W Class-D Amplifier Evaluation Module (60x80mm)
  • Ultra-low idle losses and >90% efficiency. No heatsink required
  • Integrated analog front-end supporting Single-Ended (SE) or Differential input signals
  • Stereo (BTL) and Mono (PBTL) output configurations supported
  • Includes a 3.5mm audio jack (...)

Software development

SLAC766.ZIP (442 KB)

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PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
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  • Supports simultaneous analysis of multiple products
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