International Rectifier inntroduced a chipset featuring the new IRS2092 integrated audio driver IC with protected PWM switching and IR's full complement of digital audio MOSFETs. The chipset targets medium power, high performance Class D audio amplifiers from 50 W to 500 W in home theatre, home stereo, active speaker, musical instrument, and professional audio applications.
The new chipset forms a Class D audio solution that is much smaller than a comparable Class AB design. In a 100 W application, for example, the IRS2092 IC and IRF6645 DirectFET(R) MOSFETs reduce board size by 60% and eliminate 20% of the parts from the typical bill of materials.
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 and reduced start and stop click noise, while greatly reducing some of the most complicated and costly design tasks such as overload protection.
