TPA3251D2_15 Datasheet, PDF (1/39 Pages) Texas Instruments – TPA3251D2 175-W Stereo, 350-W Mono PurePath™ Ultra-HD Analog-Input Class-D Amplifier

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TPA3251D2
SLASE40C – JUNE 2015 – REVISED JUNE 2015
TPA3251D2 175-W Stereo, 350-W Mono PurePath™ Ultra-HD Analog-Input
Class-D Amplifier
1 Features
•1 Differential Analog Inputs
• Total Output Power at 10%THD+N
– 175-W Stereo into 4 Ω in BTL Configuration
– 220-W Stereo into 3 Ω in BTL Configuration
– 350-W Mono into 2 Ω in PBTL Configuration
• Total Output Power at 1%THD+N
– 140-W Stereo into 4 Ω in BTL Configuration
– 175-W Stereo into 3 Ω in BTL Configuration
– 285-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)
– <60 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 36-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
• Blu-ray Disk™ / DVD Receivers
• High End HTiB Systems
• AV Receivers
• High End Soundbar
• Mini Combo Systems
• Active Speakers and Subwoofers
3 Description
TPA3251D2 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 175 W into 4-Ω load
and 2 x 220 W into 3-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, TPA3251D2
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.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPA3251D2
HTSSOP (44)
6.10mm x 14.00mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
Total Harmonic Distortion
RIGHT
Audio
Source
LEFT
And Control
Operation Mode Select
Switching Frequency Select
Master/Slave Synchronization
TPA3251D2
TAS5630
/CLIP_OTW
/RESET
/FAULT
M1:M2
FREQ_ADJ
OSC_IO
LC
Filter
LC
Filter
12V
Power Supply
36V
110VAC->240VAC
1
10
4:
1
0.1
0.01
0.001
10m
100m
1
10
Po - Output Power - W
T_C = 75qC
100 200
D000
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. PRODUCTION DATA.