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TPA3245

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115-W stereo, 230-W mono, 12- to 31.5-V supply, analog input Class-D audio amplifier

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Data sheet

TPA3245

ACTIVE
Data sheet Order now

Product details

Audio input type Analog Input Architecture Class-D Speaker channels (max) 4 Control interface Hardware Output power (W) 115 Power stage supply (max) (V) 30 Power stage supply (min) (V) 12 RDS(on) (Ω) 0.065 THD + N at 1 kHz (%) 0.005 Load (min) (Ω) 1.5 Analog supply voltage (min) (V) 10.8 Analog supply voltage (max) (V) 13.2 Rating Catalog Operating temperature range (°C) 0 to 70
Audio input type Analog Input Architecture Class-D Speaker channels (max) 4 Control interface Hardware Output power (W) 115 Power stage supply (max) (V) 30 Power stage supply (min) (V) 12 RDS(on) (Ω) 0.065 THD + N at 1 kHz (%) 0.005 Load (min) (Ω) 1.5 Analog supply voltage (min) (V) 10.8 Analog supply voltage (max) (V) 13.2 Rating Catalog 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
    • 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
  • 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.

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.

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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 Class-D Amplifier External Load Diagnostics (Rev. A) PDF | HTML 17 Jul 2025
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 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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Speaker, TV & soundbar audio amplifiers
  • TPA3245 — 115-W stereo, 230-W mono, 12- to 31.5-V supply, analog input Class-D audio amplifier
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  • TPA3245EVM — TPA3245 115W Stereo / 230W Mono Ultra-HD Analog-In Audio Class-D Module
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