原标题：IR IRS2092 1700W单路D类音频功率放大方案

　　IR公司的 IRS2092是集成了PWM调制器和保护的高压高性能D类音频放大器，工作频率高达800kHz，±100 V额定电压是可提供500W输出功率，主要用在家庭影院，密你立体声系统，通用音频放大器等。本文介绍IRS2092主要特性，方框图，典型连接图，典型应用电路图以及1700W单路D类音频功率放大器框图，主要特性，电路图和材料清单。

　　The IRS2092 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.

　　IRS2092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

　　• Start and stop click noise reduction

　　• High noise immunity

　　• ±100 V ratings deliver up to 500 W in output power

　　• Operates up to 800 kHz

　　• RoHS compliant

　　IRS2092典型应用：

　　• Home theater systems

　　• Mini component stereo systems

　　• Powered speaker systems

　　• General purpose audio power amplifiers

　　图1。IRS2092方框图

　　图2。IRS2092典型连接图

　　图3。IRS2092典型应用电路图

　　1700W单路D类音频功率放大器

　　IRAUDAMP9：1.7 kW / 2-Ω Single Channel Class D Audio Power Amplifier Using the IRS2092S and IRFB4227

　　The IRAUDAMP9 reference design is a single-channel 1.7-kW ( @ 2Ω load) half-bridge Class D audio power amplifier. This reference design demonstrates how to use the IRS2092S Class D audio controller and external gate buffer, to implement protection circuits, and design an optimum PCB layout using the IRFB4227 (x 2 Pairs) TO-220 MOSFETs. This reference design may require additional heatsink or fan for normal operation (one-eighth of continuous rated power). The reference design provides all the required housekeeping power supplies for ease of use. The 1-channel design is capable of delivering higher than its rated power with provision of larger heat sink ( Rth <2° C / W).

　　1700W单路D类音频功率放大器主要应用：

　　• Pro-Audio amplifiers

　　• Powered speakers

　　• Active Sub-woofers

　　• P.A. Systems

　　• Car audio amplifiers

　　Musical Instrument amplifier

　　1700W单路D类音频功率放大器主要特性：

　　Output Power: 1.7 kW Single channel (2 Ω load, 1kHz, THD+N=10%),

　　Residual Noise: 290μV, IHF-A weighted, AES-17 filter

　　Distortion: 0.07% THD+N @ 600W, 2Ω

　　Efficiency: 97% @ 1.7 kW, 2Ω

　　Multiple Protection Features: Output Over-current protection (OCP), high side and low side

　　Input Over-voltage protection (OVP),

　　Input Under-voltage protection (UVP),

　　Output DC-offset protection (DCP),

　　Over-temperature protection (OTP)

　　PWM Modulator: Self-oscillating half-bridge topology with optional clock synchronization

　　图。1700W单路D类音频功率放大器外形图

　　图。1700W单路D类音频功率放大器测试图

　　IRAUDAMP9主板材料清单：

　　IRAUDAMP9子板材料清单：

　　IRAUDAMP9机械零件清单：