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发表于 2005-10-19 22:39:00
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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.
- N! a4 T, t* @, c, FThe 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).
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PMP11769主要特性:
+ d) o: |3 a0 M& `Easily integrated into automotive systems with 50V load dump and integrated protection system/ Z# \2 e4 S$ F( ]2 T6 n# [$ F
Ultra-HD audio for best quality sound for any integrated Class-D amplifier$ {! q& B) Y7 W5 `' f. v- R
100kHz bandwidth, which enables support for high resolution audio files and formats w! q! L' r1 }" \( q3 Z
Low noise, which eliminates the "hiss" or "buzz" sounds
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' L3 ]) p/ g8 ?9 |& B图1.PMP11769 700W汽车D类音频放大器外形图
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8 `( d' l+ L% b# X+ L7 L图2.PMP11769 700W汽车D类音频放大器参考设计电路图(1)# c* [" C% I+ r5 J
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图3.PMP11769 700W汽车D类音频放大器参考设计电路图(2)4 s* O) v9 X! f* q, @
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图4.PMP11769 700W汽车D类音频放大器参考设计电路图(3)& I0 y; t, @# C" R3 P
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3 j2 Y) p, L" B" a" U/ T图5.PMP11769 700W汽车D类音频放大器参考设计电路图(4)" r$ J1 F% k9 P$ v, X
PMP11769 700W汽车D类音频放大器参考设计材料清单:
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图6.PMP11769 700W汽车D类音频放大器参考设计PCB设计图(1), U( a$ {0 b% H5 j5 y
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图7.PMP11769 700W汽车D类音频放大器参考设计PCB设计图(2)/ Q, w2 J& P# {- g
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图8.PMP11769 700W汽车D类音频放大器参考设计PCB设计图(3)
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+ f. J. a* ~! b v1 i$ C: t: v! S: P+ c图9.PMP11769 700W汽车D类音频放大器参考设计PCB设计图(4) |
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原创作品集：http://www.zgycgc.com
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