International Rectifier Corporation, a manufacturer of semiconductors, has introduced IR4311M and IR4312M power modules, expanding its PowIRaudio family of integrated power modules.
The 40V IR4311M and IR4312M offer a heatsink-free solution for low power Class D audio applications including tabletop audio systems, active speakers and musical instruments with integrated amplifiers, the company said.
The combination of an advanced audio controller IC with MOSFETs optimized for audio performance results in improved efficiency, THD, and EMI, allowing the IR43xxM family to operate without a mechanical heatsink over a power supply range on either a single or split power supply, the company added.
Additional features common to the family include over-current protection, thermal shutdown, internal/external shutdown and floating differential input. The IR4312M also offers clip detection.
According to the company, two reference designs, the IRAUDAMP15 and IRAUDAMP18, featuring the IR4311M and IR4312M respectively are also available. Pricing for the IR4311M begins at $1.61 in 10,000-unit quantities.
"The new 40V IR4311M and IR4312M PowIRaudio modules simplify system design by eliminating the need for a heatsink," said Jun Honda, Director of Audio Systems Engineering, IR's Energy Saving Products Business Unit.