Gate Driver Board and SPICE Models for Silicon Carbide Junction Transistors (SJT) Released

Gate Driver Board optimized for high switching speeds and behavior-based models enable power electronic design engineers to verify and quantify benefits of SJTs in board-level evaluation and circuit simulation

DULLES, V.A., Nov 19, 2014 — GeneSiC Semiconductor, a pioneer and global supplier of a broad range of Silicon Carbide (SiC) power semiconductors today announces the immediate availability of Gate Driver evaluation board and has expanded its design support for the industry’s lowest loss switches – the SiC Junction Transistor (SJT) – with a fully-qualified LTSPICE IV model. Using the new Gate Driver Board, power conversion circuit designers can verify the benefits of sub-15 nanosecond, temperature independent switching characteristics of SiC Junction Transistors, with low driver power losses. Incorporating the new SPICE models, circuit designers can easily evaluate the benefits GeneSiC’s SJTs provide for achieving a higher level of efficiency than is possible with conventional silicon power switching devices for comparably-rated devices.


Gate Driver Board GA03IDDJT30-FR4 applicable towards SJTs from GeneSiC

SiC Junction Transistors have significantly different characteristics than other SiC Transistor technologies, as well as Silicon Transistors. Gate Driver boards that can provide low power losses while still offering high switching speeds were needed to provide drive solutions for utilizing the benefits of SiC Junction Transistors. GeneSiC’s fully isolated GA03IDDJT30-FR4 Gate driver board takes in 0/12V and a TTL signal to optimally condition the voltage/current waveforms required to provide small rise/fall times, while still minimizing the continuous current requirement for keeping the Normally-OFF SJT conducting during the on-state. The pin configuration and form factors are kept similar to other SiC transistors. GeneSiC has also released Gerber files and BOMs to end-user to enable them to incorporate the benefits of the driver design innovations realized.

SJTs offer well-behaved on-state and switching characteristics, making it easy to create behavior based SPICE models that agree remarkably well with the underlying physics based models as well. Using well-established and understood physics-based models, SPICE parameters were released after extensive testing with device behavior. GeneSiC’s SPICE models are compared to the experimentally measured data on all device datasheets and are applicable to all 1200 V and 1700 V SiC Junction Transistors released.
GeneSiC’s SJTs are capable of delivering switching frequencies that are more than 15 times higher than IGBT-based solutions. Their higher switching frequencies can enable smaller magnetic and capacitive elements, thereby shrinking the overall size, weight and cost of power electronics systems.

This SiC Junction Transistor SPICE model adds to GeneSiC’s comprehensive suite of design support tools, technical documentation, and reliability information to provide power electronics engineers with the design resources necessary to implement GeneSiC’s comprehensive family of SiC Junction Transistors and Rectifiers into the next generation of power systems.

GeneSiC’s Gate Driver Board datasheets and SJT SPICE models can be downloaded from