[原创] TI TAS5404－Q1高效小型100W汽车放大器参考设计

TI公司的TAS5404-Q1是用于汽车音响主机的四路D类音频放器,四路模拟输入,四路BTL输出,每路能从14.4V电源中向4欧姆负载连续提供26W输出或向2欧姆负载连续提供45W输出,THD+N小于1%,75dB PSRR.每路增益为12 dB, 20 dB, 26 dB, 32dB.本文介绍了TAS5404-Q1主要特性和框图,TAS5404-Q1主要特性和电路图与材料清单,以及100W汽车放大器参考设计PMP9484主要特性,电路图和材料清单.

The TAS5404-Q1 device is a four-channel class-D audio amplifier designed for use in automotive head units. The TAS5404-Q1 device provides four channels at 20 W continuously into 4 Ω at less than 1% THD+N from a 14.4-Vdc supply when used with the application circuit. The input is configured as an analog single-ended interface. The patented PWM topology of the device provides dramatic improvements in efficiency and audio performance over traditional linear amplifier solutions. The improvement in efficiency and audio performance reduces the power dissipated by the amplifier by a factor of ten under typical music playback conditions. The device incorporates all the required functions required by the OEM application. The built-in load diagnostic functions for detecting and diagnosing disconnected speakers help reduce test time during the manufacturing process.

TAS5404-Q1主要特性:

TAS5404-Q1 – Single-Ended Input..

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