+44 (0)24 7671 8970
More publications     •     Advertise with us     •     Contact us
*/
News Article

Rohm introduces high-efficiency SiC Schottky barrier diodes

The low drive voltage of SiC SBDs features a reverse recovery time (trr) of 15nsec – much less than the 35nsec to 50nsec of conventional Si-based FRDs says Rohm.

The development of next-generation SiC (silicon carbide) Schottky barrier diodes (SBDs) has been announced by Rohm, featuring lower loss and higher voltage capability compared to silicon-based SBDs.

The SCS110A series also provides advantages over even other SiC SBDs currently on the market regarding forward voltage and operating resistance, making them ideal for a wide range of applications, including PFC (power factor correction) circuits, converters, and inverters for power conversion such as those used in EV/HEV and air conditioning units.

In the power electronics sector, conversion losses generated in conventional (Si-based) semiconductor devices have become increasingly problematic, prompting a search for a viable alternative. Silicon carbide (SiC) has emerged as the most promising candidate due to its superior material properties, in particular lower loss.

The new SCS110A series of SiC SBDs features a reverse recovery time (trr) of 15nsec – much less than the 35nsec to 50nsec of conventional Si-based FRDs. As a result, recovery loss is reduced by as much as 2/3rds, decreasing heat generation as well. In addition, the products ensure more stable operation during temperature changes than silicon FRDs, contributing to smaller heat sinks.

Compared with other SiC SBDs, the series improves trr and reduces chip size by 15%, along with operating resistance, temperature characteristics, and forward voltage (VF=1.5V at 10A), resulting in greater efficiency.

Rohm has also solved the problems associated with the mass production of SiC SBD devices, such as uniformity of the Schottky contact barrier and formation of a high-resistance guard ring layer that does not require high-temperature processing, making uniform, in-house production possible, says the company.

Key Features (SCS110A Series):


  • Ultra-small reverse recovery charge (Qrr) enables high-speed switching


  • Stable temperature characteristics


  • trr (reverse recovery time) characteristics independent of temperature



  •  



     
    Connecting the Compound Semiconductor Industry

    The 13th CS International conference builds on the strengths of its predecessors, with around 40 leaders from industry and academia delivering presentations that fall within five key themes: Ultrafast Communication; Making Headway with the MicroLED; Taking the Power from Silicon, New Vectors for the VCSEL, and Ultra-wide Bandgap Devices.

    Delegates attending these sessions will gain insight into device technology, find out about the current status and the roadmap for the compound semiconductor industry, and discover the latest advances in tools and processes that will drive up fab yields and throughputs.

    To discover our sponsorship and exhibition opportunities, contact us at:

    Email: info@csinternational.net
    Phone: +44 (0)24 7671 8970

    To register your place as a delegate, visit: https://csinternational.net/register

    Register
    ×
    Search the news archive

    To close this popup you can press escape or click the close icon.
    ×
    Logo
    ×
    Register - Step 1

    You may choose to subscribe to the Compound Semiconductor Magazine, the Compound Semiconductor Newsletter, or both. You may also request additional information if required, before submitting your application.


    Please subscribe me to:

     

    You chose the industry type of "Other"

    Please enter the industry that you work in:
    Please enter the industry that you work in: