AUDIO THE POWER MANAGEMENT LEADER IRS2092 Integrated Class D Audio Driver IC with PWM Modulator IR Advantage • Integrated analog input • Integrated self-oscillating PWM modulation • Programmable bidirectional over-current protection with self-reset control • Start and stop click noise reduction • Floating inputs enable easy half-bridge implementation • Programmable preset deadtime for scalable power design • High noise immunity • ±100V ratings deliver up to 500W in output power • PWM frequency up to 800kHz • 16-pin DIP and SOIC The IRS2092 is an integrated driver IC featuring protected PWM switching for medium power, high performance Class D audio amplifiers up to 500W in home theatre, home stereo, active speaker, musical instrument, and professional audio applications. Based upon a half bridge topology, the new audio driver IC integrates four essential functions for Class D design implementation including error amplifier, PWM comparator, gate driver, and robust protection circuitry. As a result, this compact 16-pin IC offers high noise immunity, reduced start and stop click noise, and design scalability, while greatly reducing some of the most complicated and costly design tasks such as overload protection. Key IRS2092 features include an analog PWM modulator with frequency up to 800 kHz, programmable bidirectional overcurrent protection (OCP) with self-reset control, under-voltage lockout protection (UVLO), and programmable preset deadtime for improved THD performance. Class D vs Class AB Comparison: THD + N Ratio vs Output Power For more information, call 310.252-7105 or visit us at www.irf.com 10055FS IRS2092 Integrated Class D Audio Driver IC with PWM Modulator Digital Audio MOSFETs The IRS2092 audio IC may be paired with an extensive range of IR digital audio MOSFETs addressing output power from 50W to 500W. These MOSFETs, have been optimized around parameters critical to audio performance such as efficiency, THD, and EMI. For detailed performance information, please refer to the MOSFET data sheets available online at www.irf.com. The chipset forms a Class D audio solution that is much smaller than a comparable Class AB design. In a 100W application, for example, the IRS2092 IC and IRF6645 DirectFET® MOSFETs reduce board size by 60% and eliminate 20% of the parts from the typical bill of materials. IC Specification Part Number Offset Voltage Sink/Source Current VCC Range (with UVLO) Min/Max Output Voltage Selectable Dead Time Logic Compatible Input IRS2092(S)PBF ±100V 1.2 / 1.0A 10-18V 10-18V 25/45/75/105ns 3.3 / 5.0V Companion Digital Audio MOSFETs DirectFET® Clipping Power Without Heatsink With Heatsink 4 Ohms 8 Ohms 4 Ohms 8 Ohms 50W - 100W IRF6645 IRF6665 IRF6665 IRF6665 100W - 120W IRF6645 IRF6645 IRF6775M 120W - 200W IRF6645 IRF6775M 200W - 250W IRF6775M IRF6785M IRFx Families Clipping power 50W - 60W 60W - 100W 100W - 200W 200W - 300W 300W - 500W Package Load 4 Ohms 8 Ohms TO-220 Full-Pak 5-Pin IRFI4024H-117P IRFI4212H-117P TO-220 — IRFB4212PbF TO-220 Full-Pak 5-Pin IRFI4212H-117P IRFI4212H-117P TO-220 IRFB4212PbF IRFB4212PbF TO-220 Full-Pak 5-Pin IRFI4212H-117P IRFI4019H-117P TO-220 IRFB4212PbF IRFB4019PbF TO-220 Full-Pak 5-Pin IRFI4019H-117P IRFI4020H-117P TO-220 IRFB4019PbF IRFB4020PbF IRFB4227PbF IRFB4229PbF TO-220 Full-Pak 5-Pin TO-220 Reference Design: The IRAUDAMP5 reference design speeds development and evaluation. Based upon the IRS2092 IC and the IRF6645 DirectFET power MOSFETs, the two-channel design is a 120W half-bridge power amplifier which may be scaled for power and number of channels, and requires no heatsink under normal operating conditions. The design offers an efficiency of 96% at 120W in the MOSFET stage, and a THD+N of 0.005% at 60W, four ohms, (both typical). DirectFET is a registered trademark of International Rectifier Corp. For more information, call 310.252-7105 or visit us at www.irf.com 10055FS