IR IRS2092 1700W单路D类音频功率放大方案
2012-10-30 22:37:47| 分类： 默认分类|字号 订阅
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).
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