Switch Mode Power Supplies (SMPS) Infineon Technologies Switch Mode Power Supplies (SMPS) are a cost-effective line that includes high voltage MOSFETs, control ICs, and Silicon Carbide diodes for PFC and PWM stages, as well as low voltage MOSFETs for synchronous rectification. With these SMPS products Infineon supports the trends towards continuously reducing power consumption. Especially versatile is the new CoolMOS™ 600V C6 family which combines good efficiency with attractive pricing, as does our 3rd generation SiC diodes. For synchronous rectification the OptiMOS™ 3 series offers extremely low on-state resistance and low capacitances. Infineon's new control ICs support topologies such as quasi-resonant flyback and LLC.