The most commonly used topology for power factor correction is boost PFC, but the advent of wide-bandgap (WBG) semiconductors - such as GaN and SiC - have enabled the implementation of bridgeless topologies like totem-pole PFC. To mitigate these issues, power supply designs require advanced power factor correction (PFC) circuitry to meet strict power factor (PF) standards. Lattice Semiconductor Reference DesignsĪs more electrically powered devices are connected to the grid, the increased distortion to the electric grid can create problems in the electrical distribution network.Switching Converters and Controllers AECQ Grade.