Recently, as high voltages are accelerating in automobiles and industrial equipment, power devices mounted in vehicle electric compressors, HV heaters, and industrial equipment inverters are also required to support high voltages. In addition, from the perspectives of power reduction, simplification of cooling mechanisms, and miniaturization, the demand for high efficiency of power devices is increasing, and in automobile electrical components, the demand for compliance with automotive equipment reliability standards is increasing. In particular, in inverter and heater circuits, high short-circuit withstand characteristics are becoming increasingly necessary, such as current interruption in the event of a short circuit in power devices.

ROHM Co., Ltd. announced on the 8th that it has developed a 4th generation IGBT that achieves low loss characteristics and high short-circuit withstand capacity at 1200 V, compliant with the automotive device reliability standard AEC-Q101, targeting automotive electric compressors and HV heaters, and industrial equipment inverters.

The products being sold this time include a total of 4 models, including △RGA80TRX2HR △RGA80TRX2EHR, in 2 types of discrete packages TO-247-4L and TO-247N, and 11 bare chip models, and it is reported that the lineup will be further expanded in the future.
The 4th generation 1200V IGBT has secured high voltage withstand of 1200V and reliability of automotive equipment standards by improving the device structure including the external structure. It also achieved high short-circuit withstand of 10µsec. (at Tj＝25℃) and low switching loss characteristics, as well as low conduction loss characteristics.

In addition, the TO-247-4L package product that uses 4 terminals can support an effective voltage of 1100 V in a pollution degree 2 environment by securing a creepage distance between terminals, and is characterized by being able to support high-voltage applications compared to existing products. By implementing creepage distance measures on the device side, it can also contribute to reducing the design load of the manufacturer.

For TO-247-4L package products, it was emphasized that high-speed switching was realized by adding a Kelvin emitter terminal, and high loss reduction was also achieved. In fact, as a result of comparing the efficiency of the new product's TO-247-4L package product with that of general products and existing products under three-phase inverter conditions, it was revealed that it achieved loss reduction of approximately 24% compared to general products and approximately 35% compared to existing products, contributing to high-efficiency operation of the application.

The new product has started mass production with a monthly production capacity of 1 million units. The production bases are said to be ROHM Co., Ltd. for the front-end process and ROHM Integrated Systems (Thailand) Co., Ltd. (Thailand) for the back-end process.