ROHM PrestoMOS implements the industry's fastest 600V super junction

     In recent years, the trend of energy saving has been accelerating, and the standards for energy saving of home appliances have been revised continuously. Compared with the traditional focus on energy saving at the start of equipment with larger power loads and under rated conditions, the trend of more energy saving at normal operation with smaller loads has been rising in recent years. It is said that nearly 50% of the world's electricity demand is used to drive motors, and with the popularization of air conditioning in emerging countries, the global power situation is grim year by year. In this context, ROHM has developed PrestoMOS, which is very suitable for motor drives requiring low power consumption of white goods such as air conditioners and industrial equipment, which can greatly reduce the power consumption during normal operation of the application and meet the energy saving needs of society.

     As a leader in MOSFETs for home appliances, ROHM has added the "R60xxMNx Series" to its high-speed trr 600V super junction MOSFET PrestoMOS product portfolio, which is ideal for low-power motor drives for white goods and industrial equipment. PrestoMOS is the industry's fastest power MOSFETs with trr performance and is known for the industry's lowest switching losses. It is highly praised for reducing the power consumption of white goods equipped with frequency converters.

     General MOSFETs have the advantages of high-speed switching and low conduction loss in the low current range, which can effectively reduce power consumption when the equipment is in normal operation. The "R60xxMNx Series" utilizes ROHM's unique Lifetime control technology to not only maintain the fastest trr performance in the industry, but also lower Ron and Qg, which is very helpful in energy saving inverter circuits. While ensuring performance, safety has also been further improved, usually, once a short circuit occurs, that is, there is the possibility of circuit misoperation, large current flowing beyond the design value, abnormal heating, and even component damage.

     All along, due to the restrictive relationship between performance and short circuit, it is very difficult to ensure strong short circuit resistance, and the "R60xxMNx series" uses the advantages of ROHM's simulation technology to successfully optimize the cause of thermal runaway - parasitic bipolar transistor, which can ensure the short circuit resistance necessary for motor drive, helping to improve the reliability of applications.

     Self-conducting refers to the MOSFET in the off state, once the high-side main switch is on, the drain - source voltage of the low-side MOSFET increases sharply, the voltage is induced by the gate, the gate voltage rises, and the MOSFET misoperates. This phenomenon creates its own power loss inside the MOSFET. The "R60xxMNx series" can control this loss in a very small minimum range by optimizing the parasitic capacitance.

     The development of the "R60xxMNx series" as a high-speed Trr product family in the ROHM MOSFET product series, by optimizing the unique chip structure of ROHM, while maintaining PrestoMOS "high-speed trr performance" characteristics, also succeeded in significantly reducing Ron and Qg. Therefore, in the application of motor drive such as variable frequency air conditioning, the power loss at light load is reduced by about 56% compared with the previous IGBT, and the energy saving effect is very obvious.

     Not only that, the "R60xxMNx series" uses the analog technology advantages accumulated by ROHM for many years, but also realizes the strong short-circuit tolerance, reduces the damage risk caused by abnormal heating caused by circuit misoperation, and helps to improve the reliability of the application.