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  [组图]IR IRS2092 1700W单路D类音频功率放大方案         ★★★ 【字体:
IR IRS2092 1700W单路D类音频功率放大方案
作者:IR    文章来源:IR    点击数:    更新时间:2011-6-2    

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

IRAUDAMP9主板材料清单:



IRAUDAMP9子板材料清单:


IRAUDAMP9机械零件清单:

详情请见:
http://www.irf.com/product-info/datasheets/data/irs2092.pdf

http://www.irf.com/technical-info/refdesigns/iraudamp9.pdf

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