The TPA3255 Audio Amplifier Module is a high-power Class-D audio amplifier based on the Texas Instruments TPA3255. It is designed for high-performance audio applications including home audio systems, powered speakers, soundbars and subwoofers. The TPA3255 supports an 18V to 53.5V power-stage supply and can deliver up to 2×315W into 4Ω or 600W mono into 2Ω under specified test conditions.
Full Description
The TPA3255 Audio Amplifier Module uses Texas Instruments' high-performance Class-D TPA3255 amplifier technology, combining high output power with high efficiency and low distortion.
The TPA3255 supports multiple amplifier configurations including stereo, mono and 2.1, making it suitable for a wide range of high-power audio projects. The device offers approximately 90% efficiency at 4Ω and features very low distortion, with 0.006% THD+N at 1W into 4Ω under the specified test conditions.
The amplifier can provide up to 2×260W into 4Ω at 1% THD+N, or 2×315W into 4Ω at 10% THD+N. In mono/PBTL configuration, the device can reach up to 480W into 2Ω at 1% THD+N or 600W into 2Ω at 10% THD+N.
Technical Specifications
| Specification |
Details |
| Product Type |
Audio Amplifier Module |
| Amplifier IC |
Texas Instruments TPA3255 |
| Amplifier Class |
Class-D |
| Input Type |
Analog |
| Configuration |
Stereo / Mono / 2.1 depending on module design |
| Power-Stage Supply |
18V – 53.5V DC |
| Typical Power-Stage Supply |
Approximately 51V |
| Stereo Output Power |
Up to 2 × 315W @ 4Ω at 10% THD+N |
| Stereo Output Power |
Up to 2 × 260W @ 4Ω at 1% THD+N |
| 8Ω Output Power |
Up to 2 × 150W @ 8Ω at 1% THD+N |
| Mono/PBTL Output |
Up to 600W @ 2Ω at 10% THD+N |
| Efficiency |
Approx. 90% at 4Ω |
| THD+N |
0.006% at 1W / 4Ω under specified conditions |
| Signal Bandwidth |
Up to 100kHz |
| Minimum Load |
2Ω |
| Protection |
Undervoltage, overtemperature, clipping and short circuit |
| Feedback Technology |
PurePath™ Ultra-HD |
| Applications |
High-power speakers and audio systems |
Core specifications are based on the Texas Instruments TPA3255 datasheet; connector layout, board dimensions and actual module output depend on the specific amplifier module design.
Product Applications
- High-power home audio systems
- Powered speakers
- Subwoofer amplifiers
- Soundbar systems
- 2.1 audio systems
- DIY audio projects
- High-power stereo amplifiers
- Professional audio projects
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