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.
These new IR4321M and IR4322M PowIRaudio modules further expand IR’s portfolio of integrated power modules to offer higher power capability for 2Ohm loads up to 90W per channel without the need for a heatsink.
Additional features common to the family include over-current protection, thermal shutdown, internal/external shutdown and floating differential input.
Two reference designs, the IRAUDAMP21 and IRAUDAMP22, featuring the IR4321M and IR4322M respectively are also available.