Automotive qualified power mosfets launched

Ben Jackson, automotive business unit product manager, said the devices were the first automotive qualified products of their type. "There's a revolution going on in the automotive industry," he said, "and most technologies involve power electronics. Five years ago, designers in the automotive industry weren't worried about power density and efficiency. Today, their needs are more like those of our traditional customers." One of the problems with the existing DirectFET range is the materials and packaging have not been suitable for automative applications. "But we've put in two years of R&D to create a dedicated platform," Jackson continued, "which is qualified to AEC-Q101 standards." The new packaging has no lead frame or wire bonds, which means little resistance is added to the silicon's Rds(on). Low thermal impedance also means the package can be cooled from all sides. Jackson sees two immediate application areas: dc/dc conversion and hybrid vehicles. "Five years ago, you wouldn't have expected dc/dc conversion in cars, but infotainment systems have changed that. And hybrid vehicles need conversion between different battery voltages. Together, they represent a huge growth market." Two products are launched now, with another eight in the pipeline. The The AUIRF7739L2 has an Rds(on) of 0.7mOhm (typical) at 40V. The large can size has a 60% smaller footprint and an 85% lower profile than a D2PAK. The device is aimed at electronic power steering and drive and power train systems. The AUIRF7665S2, which comes in a small can, is optimised for low gate charge and is aimed at automotive switching applications.