TPA3255 Datasheet, PDF (1/29 Pages) Texas Instruments – 600W Mono PurePath Ultra-HD Analog-Input

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TPA3255
SLASEA8 – FEBRUARY 2016
TPA3255 325-W Stereo, 600-W Mono PurePath™ Ultra-HD Analog-Input
1 Features
•1 Differential Analog Inputs
• Total Output Power at 10%THD+N
– 325-W Stereo into 4 Ω in BTL Configuration
– 185-W Stereo into 8 Ω in BTL Configuration
– 600-W Mono into 2 Ω in PBTL Configuration
• Total Output Power at 1%THD+N
– 260-W Stereo into 4 Ω in BTL Configuration
– 150-W Stereo into 8 Ω in BTL Configuration
– 480-W Mono into 2 Ω in PBTL Configuration
• 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)
– <85 µV (A-Weighted) Output Noise
– >111 dB (A Weighted) SNR
• Multiple Configurations Possible:
– Stereo, Mono, 2.1 and 4xSE
• Click and Pop Free Startup and Stop
• 90% Efficient Class-D Operation (4 Ω)
• Wide 12-V to 53.5V 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
• Blu-ray Disk™ / DVD Receivers
• High End HTiB Systems
• AV Receivers
• High End Soundbar
• Mini Combo Systems
• Active Speakers and Subwoofers
3 Description
TPA3255 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.
The device can drive up to 2 x 325 W into 4-Ω load at
10% THD and 2 x 150 W unclipped 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,
TPA3255 achieves both high power efficiency and
very low power stage idle losses below 3 W. This is
achieved through the use of 85 mΩ MOSFETs and
an optimized gate driver scheme that achieves
significantly lower idle losses than typical discrete
implementations.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPA3255
HTSSOP (44)
6.10mm x 14.00mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
RIGHT
Audio
Source
LEFT
And Control
TPA3255
TAS5630
/CLIP_OTW
/RESET
/FAULT
Operation Mode Select
Switching Frequency Select
Master/Slave Synchronization
M1:M2
FREQ_ADJ
OSC_IO
LC
Filter
LC
Filter
12V
Power Supply
36V
110VAC->240VAC
Total Harmonic Distortion
10
4R
8R
1
0.1
0.01
0.001
0.01
0.1
1
10
100
Output Power (W)
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.