ROHM has developed 4th Generation 650V IGBTs ideal for automotive electric compressors and HV heaters, as well as inverters for industrial equipment. As automotive-grade 650V-class products, new IGBTs class-leading low conduction loss with VCE(sat)= 1.55V, while providing high short-circuit tolerance and complying with the AEC-Q101 automotive reliability standard.
As electric vehicles shift to higher voltages, SiC is increasingly adopted in high-power applications such as traction inverters. At the same time, 650V IGBTs are widely used as switching devices in auxiliary systems with lower power capacity, including automotive electric compressors and HV heaters. Silicon IGBTs are also widely used in industrial equipment, particularly motors and compressors, and demand is expected to continue expanding.
These applications require greater energy savings and smaller equipment designs, creating strong demand for power devices that offer higher reliability, smaller size, and higher efficiency. In particular, inverter and heater circuits require short-circuit tolerance sufficient to endure the time needed to detect and interrupt overcurrent during a short circuit.
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In response to these market requirements, ROHM redesigned the device structure, including the process and edge termination structure, to develop 4th Generation IGBTs that combine low-loss characteristics with high short-circuit tolerance while addressing higher-voltage requirements. By revising the device structure, the products increase current density while reducing conduction and switching losses. In addition, despite the trade-off between lower loss and short-circuit tolerance, the products ensure a long short-circuit withstand time of 7 µs at Tj = 25°C. This contributes to higher efficiency and improved reliability in applications.
SOURCE: ROHM
