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60V integrated power modules tweaked for audio systems

Posted: 28 May 2013 ?? ?Print Version ?Bookmark and Share

Keywords:International Rectifier? integrated power module? audio systems? speakers?

International Rectifier recently expanded its PowIRaudio family by introducing a single channel IR4321M and a dual channel IR4322M integrated power module.

The 60V IR4321M and IR4322M complement the existing product offering and expand the power capability of low load-impedance Class D audio systems in applications including car audio systems, tabletop audio systems, active speakers and musical instruments.

The combination of an advanced audio controller IC with MOSFETs fully optimised for audio performance results in improved efficiency, THD, and EMI, allowing the IR432xM family to operate without a mechanical heatsink over a wide power supply range on either a single or split power supply. High voltage ratings and noise immunity ensure reliable operation over various environmental conditions.

Additional features common to the family include over-current protection, thermal shutdown, internal/external shutdown and floating differential input. The new devices are MSL2 industrial-qualified and RoHS compliant.

Two reference designs, the IRAUDAMP21 and IRAUDAMP22, featuring the IR4321M and IR4322M respectively are also available.

Further information regarding IR's PowIRaudio power modules can be found here.

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