Design tool
TPA3250
70-W stereo, 140-W mono, 12- to 38-V supply, analog input Class-D audio amplifier, pad-down
Data sheet
TPA3250
- Differential Analog Inputs
- Total Output Power at 10%THD+N
- 70-W Stereo Continuous into 8 Ω in BTL
Configuration at 32 V - 130-W Stereo Peak into 4 Ω in BTL
Configuration at 32 V
- 70-W Stereo Continuous into 8 Ω in BTL
- Total Output Power at 1%THD+N
- 60-W Stereo Continuous into 8 Ω in BTL
Configuration at 32 V - 105-W Stereo Peak into 4 Ω in BTL
Configuration at 32 V
- 60-W Stereo Continuous into 8 Ω in BTL
- 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
- >110 dB (A Weighted) SNR
- Signal Bandwidth up to 100 kHz for High
- Multiple Configurations Possible:
- Stereo, Mono, 2.1 and 4xSE
- Click and Pop Free Startup and Stop
- 92% Efficient Class-D Operation (8 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
The TPA3250 device 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. With a 32V power supply the device can drive up to 2 × 130 W peak into 4-Ω load and 2 × 70 W continuous 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, TPA3250 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.
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Technical documentation
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View all 11 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPA3250 70-W Stereo, 130-W peak PurePath™ Ultra-HD Pad Down Class-D Amplifier datasheet (Rev. A) | PDF | HTML | 20 Apr 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 | ||
| More literature | TI Automotive External Amplifiers (Rev. A) | 03 Feb 2017 | ||
| More literature | TI Powered Speakers (Rev. A) | 31 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 | ||
| EVM User's guide | TPA3250D2 Evaluation Module User's Guide | 02 Dec 2015 |
Design & development
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HTSSOP (DDW) | 44 | Ultra Librarian |
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