TI's PMP11769 is a complete solution for 700W automotive Class D audio amplifiers, including two Class D amplifiers: 2x175W for 4 ohm load and 1x350W for 2 ohm load. Input voltage 9-16V, 100kHz bandwidth, support for high resolution audio Documents and formats. This article describes the main features of PMP11769, circuit diagrams, bill of materials and PCB design.
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).
Main features of PMP11769:
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
Figure 1. Outline drawing of a PMP11769 700W automotive Class D audio amplifier
Figure 2. PMP11769 700W Automotive Class D Audio Amplifier Reference Design Circuit Diagram (1)
Figure 3. PMP11769 700W Automotive Class D Audio Amplifier Reference Design Circuit Diagram (2)
Figure 4. PMP11769 700W Automotive Class D Audio Amplifier Reference Design Circuit Diagram (3)
Figure 5. PMP11769 700W Automotive Class D Audio Amplifier Reference Design Circuit Diagram (4)
PMP11769 700W Automotive Class D Audio Amplifier Reference Design Material List:
Figure 6. PMP11769 700W Automotive Class D Audio Amplifier Reference Design PCB Design (1)
Figure 7. PMP11769 700W Automotive Class D Audio Amplifier Reference Design PCB Design (2)
Figure 8. PMP11769 700W Automotive Class D Audio Amplifier Reference Design PCB Design (3)
Figure 9. PMP11769 700W Automotive Class D Audio Amplifier Reference Design PCB Design (4)
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