IR公司的 IRS2092是集成了PWM調(diào)制器和保護(hù)的高壓高性能D類音頻放大器，工作頻率高達(dá)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(tǒng)，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(yīng)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, 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典型應(yīng)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(yīng)用電路圖

1700W單路D類音頻功率放大器

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單路D類音頻功率放大器主要應(yīng)用：

• Pro-Audio amplifiers

• Powered speakers

• Active Sub-woofers

• P.A. Systems

• Car audio amplifiers

Musical Instrument amplifier

1700W單路D類音頻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


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(hù)電路功能框圖

圖6。1700W單路D類音頻功率放大器測試圖

圖7。1700W單路D類音頻功率放大器電路框圖

圖8。1700W單路D類音頻功率放大器電路圖（1）


圖9。1700W單路D類音頻功率放大器主板輸入/輸出電源連接圖

圖10。1700W單路D類音頻功率放大器主板電路圖（1）

圖9。1700W單路D類音頻功率放大器子板電路圖

IRAUDAMP9主板材料清單：



IRAUDAMP9子板材料清單：


IRAUDAMP9機(jī)械零件清單：

詳情請見：
http://www.irf.com/product-info/datasheets/data/irs2092.pdf
和
http://www.irf.com/technical-info/refdesigns/iraudamp9.pdf