TI公司的PMP11769是700W汽车D类音频放大器完整解决方案,包括两个D类放大器:向4欧姆负载提供2x175W和向2欧姆负载提供1x350W.输入电压9-16V,100kHz带宽,支持高分辨率音频文件和格式.本文介绍了PMP11769主要特性,电路图,材料清单和PCB设计图.

The PMP11769 reference design is a complete solution for a 700W automotive audio amplifier. The boost converter provides 36.0V @ 10.0A continuous / 20.0A peak from an input voltage of 9 .. 16V. It contains two Class-D amplifiers which provide 2x 175W @ 4 Ohm load (left & right channel)and 1x 350W @ 2 Ohm(subwoofer).

PMP11769主要特性:

Easily integrated into automotive systems with 50V load dump and integrated protection system

Ultra-HD audio for best quality sound for any integrated Class-D amplifier

100kHz bandwidth, which enables support for high resolution audio files and formats

Low noise, which eliminates the "hiss" or "buzz" sounds
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图1.PMP11769 700W汽车D类音频放大器外形图

图2.PMP11769 700W汽车D类音频放大器参考设计电路图(1)

图3.PMP11769 700W汽车D类音频放大器参考设计电路图(2)

图4.PMP11769 700W汽车D类音频放大器参考设计电路图(3)

图5.PMP11769 700W汽车D类音频放大器参考设计电路图(4)

PMP11769 700W汽车D类音频放大器参考设计材料清单:

图6.PMP11769 700W汽车D类音频放大器参考设计PCB设计图(1)

图7.PMP11769 700W汽车D类音频放大器参考设计PCB设计图(2)

图8.PMP11769 700W汽车D类音频放大器参考设计PCB设计图(3)

图9.PMP11769 700W汽车D类音频放大器参考设计PCB设计图(4)