TPA3255-Q1 Texas instruments

TPA3255-Q1

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TPA3255-Q1

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Описание

TPA3255-Q1 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 TIs PCM5242. In addition to excellent audio performance, TPA3255-Q1 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.

AEC-Q100 Qualified for Automotive Applications
- Temperature Grade 2: –40°C to +105°C, T_A
Differential Analog Inputs
Total Output Power at 10% THD+N
- 315-W Stereo into 4 Ω in BTL Configuration
- 180-W Stereo into 8 Ω in BTL Configuration
- 600-W Mono into 2 Ω in PBTL Configuration
Total Output Power at 1% THD+N
- 255-W Stereo into 4 Ω in BTL Configuration
- 150-W Stereo into 8 Ω in BTL Configuration
- 495-W Mono into 2 Ω in PBTL Configuration
Advanced Integrated Feedback Design with High-speed Gate Driver Error Correction
- 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

Audio input type	Analog Input
Architecture	Class-D
Speaker channels (max)	4
Rating	Automotive
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)	9.8
Analog supply (max) (V)	11.4
PSRR (dB)	65
Operating temperature range (°C)	-40 to 105