[原创] TI TAS2560低功耗高性能5.6W D类音频放大器解决方案

TI公司的TAS2560是低功耗高性能数字输入D类音频放大器,4.2V电源1% THD+N时能向4欧姆负载提供5.6W,输入取样频率8 kHz 到96 kHz,内置自动增益控制(AGC),主要用在手机,平板电脑,个人电子学,建筑物/家庭自动化,蓝牙扬声器和附件.本文介绍了TAS2560主要特性,框图,立体声配置图和典型应用电路,以及5.6W D类音频放大器模块TAS2560 EVM主要特性,电路图,材料清单和PCB设计图.

The TAS2560 is a low-power, high-performance,digital input, boosted Class-D Audio amplifier that canbe easily implemented in both mono and stereo (x2)applications. The device features an ultra low-noiseaudio DAC and Class-D power amplifier whichincorporates speaker voltage and current sensingfeedback for use with speaker protection algorithms.

A Class-H boost converter generates the Class-Damplifier supply rail. When the audio signal requiresonly a lower Class-D output power, system　efficiencyis improved by deactivating the boost and connectingVBAT directly to the Class-D amplifier supply. Whenhigher audio output power is required, the multi-levelboost re-activates tracking the signal to provide theadditional voltage to the load.
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