© aydindurdu dreamstime.com Components | April 15, 2016
CISSOID delivers first SiC power module to Thales
CISSOID has delivered the first prototypes of a 3-phase 1200V/100A SiC MOSFET Intelligent Power Modules (IPM) to Thales Avionics Electrical Systems.
This module, developed with the support of Clean Sky Joint Undertaking, aims to increase power converters density, by decreasing weight and size, for power generation and electromechanical actuators in More-Electrical Aircrafts. For this Aerospace module, a 3-phase power inverter topology was selected while other topologies are being investigated for HEV and Railways projects. In this 3-phase topology, each of the 6 switch positions includes a 100A SiC MOSFET transistor and a 100A SiC Schottky free-wheeling diode. These devices can block voltages up to 1200V, which provide enough headroom against overvoltages in a 540V Aerospace DC bus, and the module is designed to be easily upgraded with 1700V/150A SiC devices. The transistors have a typical On resistance of 12.5mOhms or 8.5mOhms depending on their current rating, either 100A or 150A. Co-designing the gate driver with the power module in a single IPM allowed CISSOID to optimize the gate driver circuit taking into account parasitic inductances of the power module while minimizing them when possible. Minimizing parasitic inductances allows to switch SiC transistors faster and to lower switching losses. An IPM also offers a plug-and-play solution to power electronic designers who save a lot of time in the design of the gate driver board, which is particularly challenging with SiC transistors. They can then focus on the design of high density power converters taking advantage of SiC. “It was a pleasure to work with CISSOID team in the frame of this Clean Sky program. They showed a great flexibility in proposing us solutions addressing the requirements of the next generation of high density power converters for the More-Electrical-Aircraft” said Taoufik Bensalah, Power Converter Design Team Manager at Thales Avionics. Etienne Vanzieleghem, VP Engineering at CISSOID added: “We are very glad with this fruitful cooperation with Thales and with the open discussions we had in specifying this IPM. We also thank Clean Sky for making this cooperation possible which is a good example of CISSOID combined expertise in packaging and circuit design. This project was also an opportunity to strengthen our cooperation with PRIMES platform in Tarbes which is hosting CISSOID packaging team.”
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