TPA3221 Datasheet, PDF (1/39 Pages) Texas Instruments – 100-W Stereo, 200-W Mono HD-Audio, Analog-Input, Class-D Amplifier

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TPA3221
SLASEE9 – JUNE 2017
TPA3221 100-W Stereo, 200-W Mono HD-Audio, Analog-Input, Class-D Amplifier
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
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
analog-input interface that supports up to 2 V_RMS with
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
RIGHT
Audio Source
And Control
LEFT
Modulation Mode Select
Switching Frequency Select
Master/Slave Synchronization
TPA3221
TAS5630
PBTL
Detect
OTW_CLIP
RESET
FAULT
CMUTE
1SPW
FREQ_ADJ
OSCM/P
VDD
AVDD
GVDD
PVDD
LC Filter
LC Filter
5V
Power Supply
30V
2 Applications
• Wireless and Powered Speakers
• Soundbars
• Subwoofers
• Bookshelf Stereo Systems
• Professional and Public Address (PA) Speakers
110VAC->240VAC
Copyright © 2016, Texas Instruments Incorporated
1
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.