1、IR IRS2092 1700W單路D類音頻功率放大方案  2012-10-30 22:37:47|  分類： 默認分類|字號 訂閱IR公司的 IRS2092是集成了PWM調制器和保護的高壓高性能D類音頻放大器，工作頻率高達800kHz，±100 V額定電壓是可提供500W輸出功率，主要用在家庭影院，密你立體聲系統，通用音頻放大器等。本文介紹IRS2092主要特性，方框圖，典型連接圖，典型應用電路圖以及1700W單路D類音頻功率放大器框圖，主要特性，電路圖和材料清單。The IRS2092 is a high voltage

2、, 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 Rectifiers proprietary noise isolation technology allows high cu

3、rrent 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 enabl

4、e 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

5、to 800 kHz? RoHS compliantIRS2092典型應用：? Home theater systems? Mini component stereo systems? Powered speaker systems? General purpose audio power amplifiers圖1。IRS2092方框圖圖2。IRS2092典型連接圖圖3。IRS2092典型應用電路圖1700W單路D類音頻功率放大器IRAUDAMP9：1.7 kW / 2- Single Channel Class D Audio Power Amplifier Using the IRS209

6、2S and IRFB4227The IRAUDAMP9 reference design is a single-channel 1.7-kW ( 2 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 layo

7、ut 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 d

8、elivering higher than its rated power with provision of larger heat sink ( Rth <2° C / W).1700W單路D類音頻功率放大器主要應用：? Pro-Audio amplifiers? Powered speakers? Active Sub-woofers? P.A. Systems? Car audio amplifiersMusical Instrument amplifier1700W單路D類音頻功率放大器主要特性：Output Power: 1.7 kW Single channel

9、(2 load, 1kHz, THD+N=10%),Residual Noise: 290V, IHF-A weighted, AES-17 filterDistortion: 0.07% THD+N 600W, 2Efficiency: 97% 1.7 kW, 2Multiple Protection Features: Output Over-current protection (OCP), high side and low sideInput 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圖4。1700W單路D類音頻功率放大器功能方框圖圖5。1700W單路D類音頻功率放大器外形圖圖5。IRS2092S保護電路功能框圖