International Rectifier DirectFET2 power MOSFET chipset

International Rectifier has introduced a motor vehicle DirectFET2 power MOSFET chipset optimised for DC-DC applications used in internal combustion engine in cars, hybrid and electric vehicles.

The 40 V logic level gate drive chipset comprises the AUIRL7732S2 MOSFET and AUIRL7736M2 MOSFET optimised to help minimise switching and conduction losses in DC-DC converters.

The devices may also be used in more generic heavy-load applications such as inverter drives on pumps and fans and relay replacement in junction box applications.

The power package offers low resistance and parasitic inductance 10 times lower than a D2Pak resulting in good high-frequency switching performance with reduced waveform ringing which in turn helps limit EMI and filter size.

The chipset is suitable for DC-DC conversion.

The MOSFET features low gate charge and a PCB footprint 38% smaller than an SO-8 package making it suitable for the control MOSFET position in a synchronous buck converter.

The AUIRL7736M2 MOSFET is applicable to the synchronous switch position and features low Rds(on) and PCB footprint the same size as a 5x6 PQFN or SO-8 package.

The low inductance enables better switching performance at higher frequencies than traditional MOSFETs.