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Finns en referensdesign att bygga från om man vill.
http://www.ti.com/product/TPA3251
High Performance 175W Stereo (BTL) Feedback Class-D Audio
Features
Differential Analog Inputs
Total Output Power at 10%THD+N175-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
