IRAUDAMP9

IRAUDAMP9 is a reference design that is a single-channel 1.7KW ( at 2ohm 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 <lt/>2°C/W). Typical applications include pro-audio amplifiers, powered speakers, active sub-woofers, P.A. systems, car audio amplifier and musical instrument amplifier.

• Residual noise: 290μV, IHF-A weighted, AES-17 filter
• Distortion: 0.07% THD+N at 600W, 2ohm
• Efficiency of 97% at 1.7KW, 2ohm
• Output Over-current protection (OCP), high-side and low-side input OVP
• Input Under-voltage protection (UVP), Output DC-offset protection (DCP)
• Over-temperature protection (OTP)
• Self-oscillating half-bridge topology with optional clock synchronization
• ±75V supply voltages and 2ohm load impedance
• 300KHz self-oscillating frequency