TI TAS5441－Q单路D类音频放大器解决方案
TI公司的TAS5441-Q是单路D类音频放大器,能从14.4Vdc汽车电池向4 Ω负载提供THD+N小于10%的高达22W功率.满足 AEC-Q100汽车规范,工作电压4.5V到18V, 4 Ω负载时的效率85%,差分模拟输入,75dB电源抑制比例(PSRR),具有负载诊断功能如开路和短路输出负载,输出对电源和输出对地短路.保护和检测功能包括有短路保护,40V负载突降保护per ISO-7637-2,播放音乐时输出DC电平检测,超温保护以及过压和欠压保护.主要用在汽车紧急呼叫(eCall)放大器,汽车通讯系统,仪表盘系统和信息娱乐音频.本文介绍了TAS5441-Q主要特性,功能框图,应用电路,评估板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 class-D 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.
TAS5441-Q主要特性:
• AEC-Q100 Qualified for automotive applications
– Temperature grade 1: –40°C to 125°C, TA
..
