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1700 w single class D audio power amplifier

2015-01-01 03:02  
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 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). 1700 w single class D audio power amplifier main application: * Pro-Audio amplifiers* Powered speakers* Active Sub-woofers* P.A. Systems* Car audio amplifiers Musical Instrument amplifier 1700 w single class D audio power amplifier main characteristics: 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 IRS2092Figure 1.1700 w single class D audio power amplifier Functional block diagramIRS2092           Figure 2. 1700 w single class D audio power amplifierIRS2092                  Figure 3. IRS2092S Protection circuit diagramIRS2092Figure 4. 1700 w single class D audio power amplifier test circuitsIRS2092  Figure 5. 1700 w single class D audio power amplifier Circuit diagramIRS2092                  Figure6. 1700 w single class D audio power amplifier circuits(1)IRS2092Figure7. 1700 w single class D audio power amplifier input/output power connection diagramIRS2092          Figure 8. 1700 w single class D audio power amplifier mainboard circuit diagram(1) IRS2092                  Figure9. 1700 w single class D audio power amplifier circuits