Adil Salman from Wolfspeed recently shot a video with us covering a silicon carbide charging circuit demonstration. The charger used Wolfspeed SiC MOSFETs. It had two stages. One is a PFC (power factor correction) stage, the other is an LLC converter stage.
If you were to try building a similar charger with silicon IGBTs, you would probably end up with a design that was double or triple the size of the version done with silicon carbide, Salman says. The smaller size is possible thanks to the use of switching frequencies higher than are practical with silicon IGBTs.
Wolfspeed thinks the main applications for this technology are likely to first emerge in EV charging, locomotives, server farms, and telecom power supplies.