| Abstract |
In this work we present results of investigations on the usability of ISOPLUS SMPD SiC-MOSFETphase-leg modules for medium-frequency resonant inverters. These modules combine excellent thermalperformance, very low parasitic inductances and good switching performance with the benefits ofsurface-mountable packages. In the first step, a SPICE and a thermal simulation of a half-bridge inverterusing the SMPD module and one using discrete SiC-MOSFETs in TO-247 package was performed.Here, the semiconductor losses of the discrete devices were 2.5 times higher than the one of the SMPDmodule. In the second step, a modular prototype of a resonant MHz half-bridge inverter with the SMPDmodule was built. A short circuit test and efficiency measurements with an ohmic load showed anexcellent switching performance of the SMPD SiC-MOSFET phase-leg module in the MHZ range. Withthe inverter prototype, an efficiency of > 95\% was measured, at a switching frequency of 2.01 MHz andan output power of 5.6 kW delivered to the load resistor. |
