Texas Instruments TPA3255 PurePath Ultra-HD Class-D Amplifier
Texas Instruments TPA3255/TPA3255-Q1 Class-D Amplifier is a high-performance class-D power amplifier that enables true premium sound quality with class-D efficiency. The device 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. TPA3255/TPA3255-Q1 is operated in AD-mode and can drive up to 2x315W into the 4Ω load at 10% THD and 2x150W unclipped into the 8Ω load. This device features a 2VRMS analog input interface that works seamlessly with high-performance DACs such as TI’s PCM5242. TPA3255/TPA3255-Q1 also achieves high power efficiency and low power stage idle losses below 2.5W. This feature uses an 85mΩ MOSFET and an optimized gate driver scheme that achieves significantly lower idle losses than typical discrete implementations. The TPA3255-Q1 devices are AEC-Q100 qualified for automotive applications.
Features
- Differential analog inputs
- Total output power at 10% THD+N
- 315W stereo into 4Ω in BTL configuration
- 180W stereo into 8Ω in BTL configuration
- 600W mono into 2Ω in PBTL configuration
- Total output power at 1% THD+N
- 255W stereo into 4Ω in BTL configuration
- 150W stereo into 8Ω in BTL configuration
- 495W mono into 2Ω in PBTL configuration
- Advanced integrated feedback design with high-speed gate driver error correction
- Signal bandwidth up to 100kHz for high-frequency content from HD sources
- Ultra-low 0.006% THD+N at 1W into 4Ω and < 0.01% THD+N to clipping
- > 65dB PSRR (BTL, 1kHz, no input signal)
- < 85µV (A-weighted) output noise
- > 111dB (A-weighted) SNR
- Multiple configurations possible
- Stereo, mono, 2.1 and 4xSE
- Click and pop free startup and stop
- 90% efficient Class-D operation (4Ω)
- Wide 18V 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
Applications
- Blu-Ray Disc™ / DVD receivers
- High-end HTiB systems
- AV receivers
- High-end soundbar
- Mini combo systems
- Active speakers and subwoofers
Datasheets
Simplified Schematic
Related Development Tools
Texas Instruments TPA3255EVM PurePath™ Ultra-HD Evaluation Module
Demonstrates the capabilities and features of the TPA3255DDV, a high-performance class-D amplifier.
Texas Instruments SIDEGIG-XOVEREVM Crossover Audio Plug-in Module
Turns TI Audio Class-D amplifier evaluation modules into a high quality, two-way speaker amplifier.
Paskelbta: 2017-05-10
| Atnaujinta: 2023-11-01