產品詳細資料

Audio input type Analog Input Architecture Class-D Speaker channels (max) 4 Rating Catalog Power stage supply (max) (V) 53.5 Power stage supply (min) (V) 18 Load (min) (Ω) 2 Output power (W) 315 SNR (dB) 112 THD + N at 1 kHz (%) 0.006 Iq (typ) (mA) 34 Control interface Hardware Closed/open loop Closed Analog supply (min) (V) 10.8 Analog supply voltage (max) (V) 13.2 PSRR (dB) 80 Operating temperature range (°C) 0 to 70
Audio input type Analog Input Architecture Class-D Speaker channels (max) 4 Rating Catalog Power stage supply (max) (V) 53.5 Power stage supply (min) (V) 18 Load (min) (Ω) 2 Output power (W) 315 SNR (dB) 112 THD + N at 1 kHz (%) 0.006 Iq (typ) (mA) 34 Control interface Hardware Closed/open loop Closed Analog supply (min) (V) 10.8 Analog supply voltage (max) (V) 13.2 PSRR (dB) 80 Operating temperature range (°C) 0 to 70
HTSSOP (DDV) 44 113.4 mm² 14 x 8.1
  • Differential Analog Inputs
  • Total Output Power at 10%THD+N
    • 315-W Stereo into 4 Ω in BTL Configuration
    • 185-W Stereo into 8 Ω in BTL Configuration
    • 600-W Mono into 2 Ω in PBTL Configuration
  • Total Output Power at 1%THD+N
    • 260-W Stereo into 4 Ω in BTL Configuration
    • 150-W Stereo into 8 Ω in BTL Configuration
    • 480-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 0.006% THD+N at 1 W into 4 Ω and <0.01% THD+N to Clipping
    • >65 dB PSRR (BTL, 1 kHz, No Input Signal)
    • <85 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 18-V 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
  • Differential Analog Inputs
  • Total Output Power at 10%THD+N
    • 315-W Stereo into 4 Ω in BTL Configuration
    • 185-W Stereo into 8 Ω in BTL Configuration
    • 600-W Mono into 2 Ω in PBTL Configuration
  • Total Output Power at 1%THD+N
    • 260-W Stereo into 4 Ω in BTL Configuration
    • 150-W Stereo into 8 Ω in BTL Configuration
    • 480-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 0.006% THD+N at 1 W into 4 Ω and <0.01% THD+N to Clipping
    • >65 dB PSRR (BTL, 1 kHz, No Input Signal)
    • <85 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 18-V 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

TPA3255 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 315 W into 4-Ω load at 10% THD and 2 x 150 W unclipped 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, TPA3255 achieves both high power efficiency and very low power stage idle losses below 2.5W. This is achieved through the use of 85 mΩ MOSFETs and an optimized gate driver scheme that achieves significantly lower idle losses than typical discrete implementations.

TPA3255 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 315 W into 4-Ω load at 10% THD and 2 x 150 W unclipped 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, TPA3255 achieves both high power efficiency and very low power stage idle losses below 2.5W. This is achieved through the use of 85 mΩ MOSFETs and an optimized gate driver scheme that achieves significantly lower idle losses than typical discrete implementations.

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類型 標題 日期
* Data sheet TPA3255 315-W Stereo, 600-W Mono PurePath™ Ultra-HD Analog-Input datasheet (Rev. A) PDF | HTML 2016年 10月 4日
Application note Power Amplifiers for Constant Voltage Audio Systems PDF | HTML 2022年 9月 6日
Application note TPA324x and TPA325x Post-Filter Feedback (Rev. A) 2018年 3月 7日
More literature High-Power Audio Amplifiers TPA322x/4x/5x 2017年 12月 1日
Application note Multi-Device Configuration for TPA32xx Amplifiers 2017年 9月 27日
Technical article Professional audio equipment made the most noise at the 2017 NAMM Show PDF | HTML 2017年 3月 14日
More literature TI Automotive External Amplifiers (Rev. A) 2017年 2月 3日
More literature TI Powered Speakers (Rev. A) 2017年 1月 31日
Application note Class-D Amplifier External Load Diagnostics 2017年 1月 23日
Application note LC Filter Design (Rev. A) 2016年 11月 9日
Application note TPA32xx Analog Input Grounding for Single Ended Inputs PDF | HTML 2016年 8月 26日
EVM User's guide TPA3255EVM User's Guide PDF | HTML 2016年 7月 15日
More literature High-Power Audio Amplifiers 2016年 7月 14日
Technical article How Class-D amplifiers are closing the gap on hi-res Class-AB amplifiers PDF | HTML 2016年 4月 1日

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程式碼範例或展示

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Test report: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
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