High temperature power driver chipset for SiC switches selected by FUPET consortium in Japan

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By eeNews Europe

CHT-THEMIS and CHT-ATLAS integrated circuits are specifically designed to drive seamlessly Silicon Carbide (SiC) MOSFETs, JFETs but also Silicon IGBTs and MOSFETs and Gallium Nitride (GaN) power switches. The CISSOID chipset can be used either in applications operating in a hot environment, or in systems that will see an increase of the junction temperature due to the power density in the power stage. THEMIS and ATLAS can also be used in lower temperature applications in order to achieve a dramatic increase of the lifetime, with more than an order of magnitude gain compared to traditional solutions. With this new chipset from CISSOID, aeronautic applications such as EMA and EHA-type actuators for X-by-wire, as well as solar inverters, can now reach more than 25 years of lifetime expectancy at 125°C.
CHT-THEMIS and CHT-ATLAS are available in ceramic package forms, guaranteed for operation from -55°C up to +225°C. The Evaluation Board implements one CHT-THEMIS and one CHT-ATLAS integrated circuits, respectively the controller and the push-pull driver stages of the power transistors. The current output is controllable through 2 distinct channels capable of sourcing/sinking up to 4 A total to the gate of the power transistor. Depending on the type of power transistor the user implements, this typically translates into a total current capability of up to 150 A in the power stage. A complete set of built-in protection features, such as under-voltage lockout, de-saturation detection, soft-shutdown and active Miller clamping are included.

The Evaluation Board is built from a 200°C polyimide PCB, and it is populated with CHT-THEMIS and CHT-ATLAS integrated circuits in ceramic packages guaranteed for -55°C up to +225C. As a result, the board supports short excursions to +200°C~225°C for testing. The Evaluation Kit includes the Evaluation Board, the complete electrical schematic, the Gerber files, the bill of materials and an Application Note.

 The Evaluation Kit THEMIS-ATLAS, referenced EVK-TIT9036 is available now, priced at 2,850€. The integrated circuits CHT-THEMIS and CHT-ATLAS are available now for sampling and evaluation. Pricing starts at 532.53€/chipset up to 200 units in CSOIC ceramic package, The chipset is also available in plastic SOIC package, for maximum temperature of 175°C, under the references CMT-THEMIS and CMT-ATLAS.

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