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At first, a power switch with an operating voltage of 1200 V and a current rating of 50 A is designed and fabricated. The switching device of choice is a normally-off junction field effect transistor (JFET) processed with epitaxial material technology. DENSO is developing high quality SiC wafer material, power switches and module technology for over 10 years. The all epitaxial JFET concept was designed and successfully tested at DENSO for current ratings over 50 A. The epitaxial material was supplied by Acreo. Acreo has more than 15 years experience in developing epitaxial growth technologies and innovative device processes for SiC. For the 50 A rated devices, the JFET process technology will be established at Acreo’s SiC process line at the ElectrumLab in Kista and device fabrication will start from autumn 2010. It is planned that packaged JFET devices are ready for system evaluation demonstrator circuits in the beginning of 2011. The targeted applications are dc-dc converters, battery chargers, and photovoltaic systems. This technology can be considered for robust high temperature automotive applications in the future.
The collaboration with DENSO for the fabrication of normally-off SiC-JFET power devices is the result of joint research activities regarding SiC material technology for more than five years. The new agreement includes the transfer of the DENSO JFET technology to Acreo and is supported by the Swedish Governmental Agency for Innovation Systems (VINNOVA) and the Invest in Sweden Agency (ISA), Japan.
By combining both side’s competence and long experience in SiC R&D, material technology, and knowledge in power device design and processing, the fabrication of high performance and efficient normally-off SiC-JFET devices will be possible. These SiC-JFETs should contribute to revolutionize power electronics and lead to smaller, lighter, and more-efficient power systems. Compared to conventional Si
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technology, a reduction in size and weight by at least factor 6 is in reach with no compromise in energy conversion efficiency.
“The agreement takes our cooperation into a new important phase, enabling us to test the new technology in real, demanding applications”, says Mårten Armgarth, CEO at Acreo. The next generation of power devices are herewith directly accessible for Swedish system companies.
“It’s time to explore the energy-efficient SiC power device potential non-automotive applications. This collaboration will help in discovering new business frontiers in Europe”, says Hikaru Sugi, DENSO’s senior managing director overseeing Engineering Research & Development Center.
GigOptix Begins Shipping 100G DP-QPSK Driver to Tier 1 Telecom OEM
GigOptix, Inc. that it has begun shipping its high performance 100G DP-QPSK driver to a Tier 1 Telecom OEM
This signifies the culmination of more than two years of joint development by the GigOptix engineering team in developing a market leading driver, the first monolithic solution available in the industry for next generation 100G DP-QPSK DWDM market. During the development activity, GigOptix utilized its proven capabilities of delivering high performance semiconductor driver products with innovative high speed analog design techniques to produce a 100G DWDM driver solution in a compact, power efficient form factor.
Andrea Betti-Berutto, CTO of GigOptix, commenting on this announcement said: “We are very excited to be at the forefront of 100G market adoption. We decided more than two years ago to align our 100G development with our customer’s requirements and given our
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