TPA3244 Datasheet, PDF (1/32 Pages) Texas Instruments – 100W peak PurePath Ultra-HD Pad Down Class-D Amplifier

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TPA3244
SLASEC6 – APRIL 2016
TPA3244 40-W Stereo, 100-W peak PurePath™ Ultra-HD Pad Down Class-D Amplifier
1 Features
•1 Differential Analog Inputs
• Total Output Power at 10%THD+N
– 40-W Stereo Continuous into 8 Ω in BTL
Configuration at 30 V
– 100-W Stereo Peak into 4 Ω in BTL
Configuration at 30 V
• Total Output Power at 1%THD+N
– 35-W Stereo Continuous into 8 Ω in BTL
Configuration at 30 V
– 80-W Stereo Peak into 4 Ω in BTL
Configuration at 30 V
• Advanced Integrated Feedback Design with High-
speed Gate Driver Error Correction
(PurePath™ Ultra-HD)
– Signal Bandwidth up to 100 kHz for High
Frequency Content From HD Sources
– Ultra Low 0.005% THD+N at 1 W into 4 Ω and
<0.01% THD+N to Clipping
– 60 dB PSRR (BTL, No Input Signal)
– <55 µV (A-Weighted) Output Noise
– >110 dB (A Weighted) SNR
• Multiple Configurations Possible:
– Stereo, Mono, 2.1 and 4xSE
• Click and Pop Free Startup and Stop
• 92% Efficient Class-D Operation (8 Ω)
• Wide 12-V to 30-V Supply Voltage Operation
• Self-Protection Design (Including Undervoltage,
Overtemperature, Clipping, and Short Circuit
Protection) With Error Reporting
• EMI Compliant When Used With Recommended
System Design
2 Applications
• High End Soundbar
• Mini Combo Systems
• Blu-ray Disk™ / DVD Receivers
• Active Speakers
3 Description
The TPA3244 device is a high performance Class-D
power amplifier that enables true premium sound
quality with Class-D efficiency. It features an
advanced integrated feedback design and proprietary
high-speed gate driver error correction (PurePath™
Ultra-HD). This technology allows ultra low distortion
across the audio band and superior audio quality.
With a 30-V power supply the device can drive up to
2 x 100 W peak into 4-Ω load and 2 x 40 W
continuous into 8-Ω load and features a 2-VRMS
analog input interface that works seamlessly with high
performance DACs such as TI's PCM5242. In
addition to excellent audio performance, TPA3244
achieves both high power efficiency and very low
power stage idle losses below 1 W. This is achieved
through the use of 60 mΩ MOSFETs and an
optimized gate driver scheme that achieves
significantly lower idle losses than typical discrete
implementations.
Table 1. Device Information⁽¹⁾
PART NUMBER
PACKAGE
TPA3244D2
HTSSOP (44)
BODY SIZE (NOM)
6.10mm x 14.00mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Figure 1. Simplified Schematic
Figure 2. Total Harmonic Distortion
RIGHT
Audio
Source
LEFT
And Control
Operation Mode Select
Switching Frequency Select
Master/Slave Synchronization
TPA3244
TAS5630
/CLIP_OTW
/RESET
/FAULT
M1:M2
FREQ_ADJ
OSC_IO
LC
Filter
LC
Filter
12V
Power Supply
30V
TO BE UPDATED
110VAC->240VAC
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. PRODUCT PREVIEW Information. Product in design phase of
development. Subject to change or discontinuance without notice.