International Rectifier (IR) has introduced an automotive DirectFET2 power MOSFET chipset optimized for DC-DC applications used in internal combustion engine (ICE) cars, hybrids and electric vehicles.
The new 40 V logic level gate drive chipset comprises the AUIRL7732S2 MOSFET and AUIRL7736M2 MOSFET designed to help minimize switching and conduction losses in DC-DC converters. The AUIRL7732S2 can be utilized together with the AUIRL7736M2 as a control/sync MOSFET pair in a buck converter topology. The devices may also be used in more generic heavy load applications such as inverter drives on pump and fans and relay replacement in junction box applications.
The AUIRL7732S2 logic level MOSFET features low gate charge (Qg) and a PCB footprint 38 percent smaller than an SO-8 package making it well suited for the control MOSFET position in a synchronous buck converter. The AUIRL7736M2 MOSFET is applicable for the synchronous switch position and features low Rds(on) and a PCB footprint the same size as a 5x6 PQFN or SO-8 package. The low inductance of the AUIRL7732S2 and AUIRL7736M2 enables better switching performance at higher frequencies than traditional MOSFETs.
The devices are qualified according to AEC-Q101 standards. Pricing begins at US $0.53 each for the AUIRL7732S2 and US $0.98 each for the AUIRL7736M2 respectively in 100,000-unit quantities