TPA3221 Series

100-W stereo, 200-W mono, 7- to 32-V supply, analog input Class-D audio amplifier w/ low idle

Catalog

100-W stereo, 200-W mono, 7- to 32-V supply, analog input Class-D audio amplifier w/ low idle

Part	Operating Temperature [Max]	Operating Temperature [Min]	Max Output Power x Channels @ Load	Supplier Device Package	Output Type	Package / Case [custom]	Package / Case [custom]	Package / Case	Voltage - Supply [Max]	Voltage - Supply [Min]	Type	Features	Mounting Type	Utilized IC / Part	Board Type	Supplied Contents
Texas Instruments TPA3221DDV	85 °C	-40 °C	112 W 155 W	44-HTSSOP	1-Channel (Mono) or 2-Channel (Stereo)	44-PowerTSSOP	0.244 in	6.2 mm	32 VDC	7 V	Class D	Short-Circuit and Thermal Protection Standby	Surface Mount
Texas Instruments TPA3221EVM			112 W 208 W		1-Channel (Mono) or 2-Channel (Stereo)				30 VDC	12 V				TPA3221	Fully Populated	Board(s)

Catalog

100-W stereo, 200-W mono, 7- to 32-V supply, analog input Class-D audio amplifier w/ low idle

Key Features

• Wide 7-V to 30-V Supply Voltage OperationStereo (2 x BTL) and Mono (1 x PBTL) OperationOutput Power at 10% THD+N105-W Stereo into 4 Ω in BTL Configuration112-W Stereo into 3 Ω in BTL Configuration208-W Mono into 2 Ω in PBTL ConfigurationOutput Power at 1% THD+N88-W Stereo into 4 Ω in BTL Configuration100-W Stereo into 3 Ω in BTL Configuration170-W Mono into 2 Ω in PBTL Configuration5-V Gate Drive or Built-in LDO for Optional Single-Supply OperationClosed-Loop Feedback DesignSignal Bandwidth up to 100 kHz for High-Frequency Content From HD Sources0.02% THD+N at 1 W into 4 Ω60-dB PSRR (BTL, No Input Signal)<75-µV Output Noise (A-Weighted)>108-dB SNR (A-Weighted)AD or HEAD Modulation SchemesLow-Power Operating ModesStandby Modes: Mute and < 1 mA ShutdownLow Idle-Current HEAD Modulation SchemeSingle-Channel BTL OperationMultiple Input Options to Simplify Pre-Amp DesignDifferential or Single-Ended Analog InputsSelectable Gains: 18 dB, 24 dB, 30 dB, 34 dBIntegrated Protection: Undervoltage, Overvoltage, Cycle-by-cycle Current Limit, Short Circuit, Clipping Detection, Overtemperature Warning and Shutdown, and DC Speaker Protection90% Efficient Class-D Operation (4 Ω)Pin-Compatible Family of Devices with Voltage and Power-Level OptionsWide 7-V to 30-V Supply Voltage OperationStereo (2 x BTL) and Mono (1 x PBTL) OperationOutput Power at 10% THD+N105-W Stereo into 4 Ω in BTL Configuration112-W Stereo into 3 Ω in BTL Configuration208-W Mono into 2 Ω in PBTL ConfigurationOutput Power at 1% THD+N88-W Stereo into 4 Ω in BTL Configuration100-W Stereo into 3 Ω in BTL Configuration170-W Mono into 2 Ω in PBTL Configuration5-V Gate Drive or Built-in LDO for Optional Single-Supply OperationClosed-Loop Feedback DesignSignal Bandwidth up to 100 kHz for High-Frequency Content From HD Sources0.02% THD+N at 1 W into 4 Ω60-dB PSRR (BTL, No Input Signal)<75-µV Output Noise (A-Weighted)>108-dB SNR (A-Weighted)AD or HEAD Modulation SchemesLow-Power Operating ModesStandby Modes: Mute and < 1 mA ShutdownLow Idle-Current HEAD Modulation SchemeSingle-Channel BTL OperationMultiple Input Options to Simplify Pre-Amp DesignDifferential or Single-Ended Analog InputsSelectable Gains: 18 dB, 24 dB, 30 dB, 34 dBIntegrated Protection: Undervoltage, Overvoltage, Cycle-by-cycle Current Limit, Short Circuit, Clipping Detection, Overtemperature Warning and Shutdown, and DC Speaker Protection90% Efficient Class-D Operation (4 Ω)Pin-Compatible Family of Devices with Voltage and Power-Level Options

Description

TPA3221 is a high-power 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 Efficient AD mode) modulation, and can drive up to 2 x 105 W into 4-Ω load or 1 x 208 W into 2-Ω load. The TPA3221 features a single-ended or differential analog-input interface that supports up to 2 VRMSwith four selectable gains: 18 dB, 24 dB, 30 dB and 34 dB. The TPA3221 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. 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. TPA3221 is a high-power 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 Efficient AD mode) modulation, and can drive up to 2 x 105 W into 4-Ω load or 1 x 208 W into 2-Ω load. The TPA3221 features a single-ended or differential analog-input interface that supports up to 2 VRMSwith four selectable gains: 18 dB, 24 dB, 30 dB and 34 dB. The TPA3221 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. 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.