Because the gate driver and PCB design are the same for all transistor types, users can compare and contrast their actual switching performance and make informed decisions about the appropriate technology for their application.
The reference design consists of a half-bridge arrangement with a fully isolated driver stage using isolated power supplies for both the low-side and high-side switching transistors. The package includes four different sets of DC/DC converters that generate the appropriate isolated driver voltages for the different transistor types. This allows the user to select which TO247 or TO247-4L (Kelvin connection) packaged switching transistors they wish to evaluate from their chosen supplier, match the appropriate DC/DC converter, and then quickly prototype and test their application. The reference design is a building block that can be used to evaluate forward, flyback, buck, and boost topologies, and by combining two or more units, it can be used to evaluate full-bridge and three-phase circuits. The printed circuit board is optimized for high-speed switching up to 1000 V at a drive current of up to 10 A. The signal ground is galvanically isolated from the ground, and built-in BNC connectors are provided for high-speed connections to external TTL signal generators. Because the high and low side controls are independent, the reference design can also be used to implement asymmetric duty cycles, active clamps, and full-bridge topologies with phase shifting. The R-REF01-HB reference design is available from all authorized RECOM distributors.

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