SiC Schottky Barrier Diodes
The total capacitive charge (Qc) of Schottky barrier diodes (SBDs) is small, reducing switching loss while enabling high-speed switching operation. In addition, unlike silicon-based fast recovery diodes where the trr increases with the temperature, silicon carbide devices maintain constant characteristics, resulting in better performance.
SiC Schottky barrier diodes make power-conversion systems more reliable, so they are used in battery chargers, solar panels for renewable energy, and electric vehicle charging stations.
Silicon carbide is a low-heat generating material, allowing manufacturers to reduce the overall size of power supply systems. For example, the Kinki Roentgen company's 500-watt power supply for X-ray generators utilizes ROHM SiC SBDs to reduce the volume per watt by five times compared to older systems.