Categorized | Industry News, ROHM


Posted on 29 May 2019

ROHM Semiconductor shows 3rd Generation SiC MOSFETs with Trench Gate Structure









At PCIM 2014 ROHM Semiconductor demonstrated its new 3rd Gen SiC MOSFETs based on Trench Gate structure technology, marking another milestone in the development of SiC MOSFET which the company started back in 2010. Compared to conventional planar MOSFETs which have JFET regions increasing the on-resistance, the new MOSFET types only reach about half of the same on-resistance over the whole temperature range while the stability of the Gate oxide film and of the Body Diode remains as high as with ROHM’s 2nd Generation SiC MOSFETs. Since the company managed to overcome issues regarding oxide breakdown during high-drain source voltage, the result is higher reliability and increased current-carrying capacity at reduced cell density, minimum conductivity loss and minimum switching loss while keeping a compact format.

Retrospectively, ROHM already developed SiC planar MOSFETs which have suppressed the degradation of parasitic PN junction diodes when forward current penetrates. Now, the low on resistance of the trench SiC MOSFETs is ideal to improve inverter power density and performance. The new devices deliver optimized RDS(ON) and Ciss characteristics in order to tweak efficiency and switching speed. The parasitic diode only shows minimal reverse recovery behaviour and degradation caused by its conduction is widely eliminated.


  • Solar Inverter
  • Motor Drive
  • Power Supply (UPS / Telecom)
  • Automotive
  • Induction heating for Industrial  



About ROHM Semiconductor

ROHM Semiconductor is a global company of 331,087 million yen (3.24 billion $) revenue with 19,985 employees in the last fiscal year ending March 2014. ROHM Semiconductor develops and manufactures a very large product range from the Ultra Low Power Microcontroller, Power Management, Standard ICs , SiC Diodes, Mosfets and Modules , Power Transistors and Diodes, LEDs to passives components such as Resistors, Tantalum Capacitors and LED display units, thermal Printheads in state-of-the-art manufacturing plants in Japan, Korea, Malaysia, Thailand, the Philippines, China and Europe.

Lapis Semiconductor (former OKI Semiconductor), SiCrystal AG and Kionix are  companies of ROHM Group.

ROHM Semiconductor Europe has its head office near Dusseldorf serving the EMEA region (Europe, Middle East and Africa). For further information please contact


VN:F [1.9.17_1161]
Rating: 0.0/6 (0 votes cast)

This post was written by:

- who has written 74 posts on PowerGuru - Power Electronics Information Portal.

Contact the author

Leave a Response

You must be logged in to post a comment.