Power electronics switch from silicon to silicon carbide due to its superior properties
MOUNTAIN VIEW, Calif. - June 5, 2012 - Due to its superior thermal and electrical properties, Silicon Carbide (SiC), a wide band gap material, has emerged as a key enabling material that has the potential to displace silicon based insulated gate bipolar transistors (IGBTs), metal oxide semiconductor field effect transistors (MOSFETs), diodes and rectifiers – specifically in the high power electronics area for applications in photo voltaic panels, hybrid/electric cars, high-power industrial drives, motor drives, smart grids and power utilities.
New analysis from Frost & Sullivan (http://www.technicalinsights.frost.com), Silicon Carbide Electronics —Technology Market Penetration and Roadmapping, finds that SiC-based power electronics are well positioned to meet some of the key performance criteria, such as decreased overall system costs and enhanced system efficiency, for emerging applications such as hybrid vehicles and inverters for solar energy.
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"Silicon carbide electronics exhibit superior thermal resistance, low conductivity losses and higher material strength than silicon," said Technical Insights Industry Analyst Avinash Bhaskar. "Thus, silicon carbide-based power electronics such as diodes and transistors can potentially reduce the size and also switch losses in power systems by 50 percent."
Encouraged by their superior material properties, major automotive manufacturers involved in developing hybrid and electric vehicles are currently testing silicon carbide-based MOSFETs and other transistors as a viable alternative to silicon-based transistors, particularly for under the hood applications where the operating conditions are challenging.
"Defense agencies are also driving the research on using silicon carbide for developing power electronic devices," said Technical Insights Industry Manager Kasthuri Jagadeesan. "A commercial volume market in the renewable sector, industrial sector and automotive sector could present a big market opportunity for silicon carbide power electronics."
The future of silicon carbide will lie in developing reliable transistors such as MOSFETs and bipolar junction transistors. While SiC-based diodes have made their way into a number of applications, end-users are truly interested in a reliable silicon carbide-based MOSFET that can challenge the dominance of silicon-based IGBTs.
Hybrid electric cars will greatly benefit from having silicon carbides or MOSFETS under the hood, as SiC has a better thermal resistance than silicon-based IGBTs. This will reduce the overall system cost in electric cars, as adopting SiC devices will lead to eliminating the use of heat sinks and other cooling devices.
"However, silicon carbide material defects, higher cost of manufacturing wafers and packaging issues could hamper the growth of silicon carbide power electronics," cautioned Bhaskar. "The research efforts in developing reliable silicon carbide-based transistors in the higher power realm have been sluggish, slowing down the time to market."
Strong collaborations and alliances along with increased investments will accelerate developments in the SiC power electronics technology space. Several companies have started sampling silicon carbide MOSFETs and DMOSFETs, which will aid in rapid deployment of silicon carbide power electronics in the commercial market.
Silicon Carbide Electronics — Technology Market Penetration and Roadmapping is part of the Technical Insights subscription which also includes research in the following: key development trends associated with silicon carbide wide band gap material for the power electronics market. Further, this research service includes detailed technology analysis and industry trends evaluated following extensive interviews with market participants.
Technical Insights is an international technology analysis business that produces a variety of technical news alerts, newsletters, and research services.
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Silicon Carbide Electronics —Technology Market Penetration and Roadmapping
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