IR IRAUDAMP9 1700W数字D类音频功率放大参考设计
IR公司的IRAUDAMP9是采用IRS2092S和IRFB4227的单路1.7 kW / 2-Ω 数字D类音频功率放大参考设计,输出功率1.7kW(2 Ω 负载, 1kHz, THD+N=10%),THD+N失真0.07%(@ 600W, 2Ω),效率97%(@ 1.7 kW, 2Ω),具有多种输出保护特性如OCP,OVP,UVP,DCP和OTP,主要用于专业音响放大器,扬声器,有源亚低音,功率放大器,汽车音频放大器和乐器放大器.本文介绍了AUIRS2092主要特性,方框图,典型应用电路,以及D类音频功率放大器参考设计IRAUDAMP9功能框图,主板和子板电路图以及材料清单,PCB布局图.
The AUIRS2092 is a high voltage, high performance Class D audio amplifier driver with PWM modulator and protection. In conjunction with two external MOSFET and a few external components, a complete Class D audio amplifier with protection can be realized. International Rectifier’s proprietary noise isolation technology allows high current gate drive stage and high speed low noise error amplifier reside on a single small silicon die.Open elements of PWM modulator section allow flexible PWM topology implementation.
AUIRS2092主要特性:
• Integrated analog input Class D audio amplifier driver in a small 16 pin package
• Floating inputs enable easy half bridge implementation
• Programmable bidirectional over-current protection with self-reset function
• Programmable preset deadtime for improved THD performances
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