Power MOSFET Chipset Targets DC-DC Apps Requiring High Power Density
Sat, 04/30/2011 - 9:06am
International Rectifier announced the introduction of an automotive DirectFET2 power MOSFET chipset optimized for DC-DC applications used in internal combustion engine (ICE) cars, hybrid and electric vehicles. The 40-V logic level gate drive chipset comprises the AUIRL7732S2 MOSFET and AUIRL7736M2 MOSFET optimized to help minimize 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 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, according to the company, making it suitable 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 PCB footprint the same size as a 5x6 PQFN or SO-8 package. The company asserts the low inductance of the AUIRL7732S2 and AUIRL7736M2 enables better switching performance at higher frequencies than traditional MOSFETs.