ROHM has introduced fourth-generation 650-V IGBTs for electric compressors and high-voltage heaters used in electric vehicle (EV) auxiliary systems.
The automotive-grade devices achieve a collector-emitter saturation voltage of 1.55 V and comply with the AEC-Q101 automotive reliability standard. They also provide a short-circuit withstand time of 7 microseconds at a junction temperature of 25° C.
As EV architectures move to higher voltages, SiC devices are increasingly used in high-power applications such as traction inverters. IGBTs remain widely used in lower-power auxiliary systems, including electric compressors and high-voltage heaters, where efficiency, reliability, and short-circuit tolerance are important.
ROHM redesigned the device structure, manufacturing process, and edge termination structure for the new generation. The changes increase current density while reducing conduction and switching losses.
The initial lineup includes 12 products in the TO-247N package under the RGAxxTS65HR and RGAxxTS65EHR series, along with 10 SG83xxWN bare-wafer products. ROHM is also developing 12 TO-247-4L devices in the RGAxxTR65HR and RGAxxTR65EHR series.
Future additions are planned in compact TO-263L and top-side cooling packages to support higher efficiency and smaller automotive and industrial power systems.
Filed Under: Power Electronics, Technology News