[原创] TI TAS5441－Q1 22W汽车D类音频放大器解决方案

TI公司的TAS5441-Q1是 22W模拟输入单路数字D类音频放大器,能从14.4V汽车电池向4 Ω负载提供多达22W,THD+N小于10%.器件工作范围宽4.5-V 到18-V,效率极好85%. TAS5441-Q1具有七个主要设计区块:PWM,栅极驱动,功率FET,诊断,保护,电源和I2C串行通信总线.器件满足汽车应用的AEC-Q100 规范,工作温度–40℃ 到 125℃差分模拟输入,具有单路BTL数字功率放大器,电源抑制比(PSRR)75dB,具有负载诊断功能如负载开路和短路以及输出到地和输出到电源短路等.40V抛负载保护per ISO-7637-2.主要用在汽车紧急呼叫 (eCall) 放大器,远程信息处理系统,仪表盘系统和信息娱乐音频.中电网为您整理如下详细资料,本文介绍了TAS5441-Q1主要特性,功能框图, 典型应用电路图以及评估模块TAS5441-Q1 EVM主要特性,电路图,材料清单和PCB设计图.

The TAS5441-Q1 is a mono digital audio amplifier, ideal for use in automotive emergency call (eCall), telematics, instrument cluster, and infotainment applications. The device provides up to 22 W into 4 Ω at less than 10% THD+N from a 14.4-Vdc automotive battery. The wide operating voltage range and excellent efficiency make the device ideal for startstop support or running from a backup battery when required. The integrated load-dump protection reduces external voltage clamp cost and size, and the onboard load diagnostics report the status of the speaker through I2C.
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