Design tool
TPA3245
115-W stereo, 230-W mono, 12- to 31.5-V supply, analog input Class-D audio amplifier
Data sheet
TPA3245
- Differential Analog Inputs
- Total Output Power at 10%THD+N
- 115-W Stereo into 4 Ω in BTL Configuration
- 145-W Stereo into 3 Ω in BTL Configuration
- 230-W Mono into 2 Ω in PBTL Configuration
- Total Output Power at 1%THD+N
- 95-W Stereo into 4 Ω in BTL Configuration
- 115-W Stereo into 3 Ω in BTL Configuration
- 185-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
- 65 dB PSRR (BTL, No Input Signal)
- <50 µV (A-Weighted) Output Noise
- >112 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 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
TPA3245 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 is operated in AD-mode, and can drive up to 2 x 115 W into 4-Ω load and 2 x 145 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, TPA3245 achieves both high power efficiency and very low power stage idle losses below 0.45 W. This is achieved through the use of 65 mΩ MOSFETs and an optimized gate driver scheme that achieves significantly lower idle losses than typical discrete implementations.
Technical documentation
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View all 12 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPA3245 115-W Stereo, 230-W Mono PurePath™ Ultra-HD Analog-Input Class-D Amplifier datasheet (Rev. A) | PDF | HTML | 26 Oct 2016 |
| Application note | TPA324x and TPA325x Post-Filter Feedback (Rev. A) | 07 Mar 2018 | ||
| More literature | High-Power Audio Amplifiers TPA322x/4x/5x | 01 Dec 2017 | ||
| Application note | Multi-Device Configuration for TPA32xx Amplifiers | 27 Sep 2017 | ||
| Technical article | Professional audio equipment made the most noise at the 2017 NAMM Show | PDF | HTML | 14 Mar 2017 | |
| More literature | TI Automotive External Amplifiers (Rev. A) | 03 Feb 2017 | ||
| More literature | TI Powered Speakers (Rev. A) | 31 Jan 2017 | ||
| User guide | TPA3245 Evaluation Module (Rev. A) | 30 Jan 2017 | ||
| Application note | Class-D Amplifier External Load Diagnostics | 23 Jan 2017 | ||
| Application note | LC Filter Design (Rev. A) | 09 Nov 2016 | ||
| Application note | TPA32xx Analog Input Grounding for Single Ended Inputs | PDF | HTML | 26 Aug 2016 | |
| More literature | High-Power Audio Amplifiers | 14 Jul 2016 |
Design & development
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Simulation tool
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HTSSOP (DDV) | 44 | Ultra Librarian |
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