1、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
2、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
3、 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
4、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 ?
5、 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- Single Channel Class D Audio Power Amplifier Usi
6、ng the IRS2092S and IRFB4227 The 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 op
7、timum 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 i
8、s 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 k
9、W Single channel (2 load, 1kHz, THD+N=10%), Residual Noise: 290 V, IHF-A weighted, AES-17 filter Distortion: 0.07% THD+N 600W, 2 Efficiency: 97% 1.7 kW, 2 Multiple Protection Features: Output Over-current protection (OCP), high side and low side Input Over-voltage protection (OVP), Input Under-volta
10、ge protection (UVP), Output DC-offset protection (DCP), Over-temperature protection (OTP) PWM Modulator: Self-oscillating half-bridge topology with optional clock synchronization 图 4。 1700W 单路 D类音频功率放大器功能方框图 图 5。 1700W 单路 D类音频功率放大器外形图 图 5。 IRS2092S 保护电路功能框图 图 6。 1700W 单路 D类音频功率放大器测试图 图 7。 1700W 单路 D类音频功率放大器电路框图 图 8。 1700W 单路 D类音频功率放大器电路图( 1) 图 9。 1700W 单路 D类音频功率放大器主板输入 /输出电源连接图 图 10。 1700W 单路 D类音频功率放大器主板电路图( 1) 图 9。 1700W 单路 D类音频功率放大器子板电路图