TI TAS5631 PWM输入300W立体声D类放大方案

TI 公司的TAS5631 是集成了反馈的PWM输入300W立体声(总功率600W)的D类放大器,能从单电源50V向4-8欧姆扬声器提供高达300W立体声,具有传统AB类放大器的性能(<0.03% THD)和D类放大器的电源效率.它的SNR大于100dB,PSRR为80dB,功率级的效率高达88%,主要用于Mini组合系统,AV接收器,DVD接收器和有源扬声器.本文介绍TAS5631主要特性, 功能方框图, 典型系统方框图,几种.

The TAS5631 is a high performance analog input Class D amplifier with integrated closed loop feedback technology (known as PurePath™ HD) with the ability to drive up to 300W (1) Stereo into 4 to 8 Speakers from a single 50V supply.

PurePath™ HD technology enables traditional AB-Amplifier performance (<0.03% THD) levels while providing the power efficiency of traditional class D amplifiers.Unlike traditional Class D amplifiers, the distortion curve only increases once the output levels move into clipping.

PurePath™ HD technology enables lower idle losses making the device even more efficient. Coupled with TI’s Class G power supply reference design for TAS563x, industry leading levels of efficiency can be achieved.

TAS5631主要特性:

PurePath™ HD Enabled Integrated Feedback Provides:

Signal Bandwidth up to 80kHz for High Frequency Content From HD Sources

Ultralow 0.03% THD at 1W into 4
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