This topology uses a boost converter in addition to a rectifying diode bridge that converts the AC voltage to DC voltage ( Figure 1). Interleaved boost PFC is the most common topology for power factor correction. This article compares these three topologies when used in different applications. Furthermore, advanced totem-pole controllers have simplified the control of complex designs such as interleaved totem-pole PFC. The most commonly used topology for power factor correction is boost PFC, but the advent of wide bandgap (WBG) semiconductors-such as gallium nitride (GaN) and silicon carbide (SiC)-has enabled the implementation of bridgeless topologies like totem-pole PFC. So, power supply designs require advanced power factor correction (PFC) circuitry to meet strict power factor (PF) standards to mitigate these issues. Three topologies are commonly used in power supply designs: Interleaved boost PFC, bridgeless totem-pole PFC and interleaved totem-pole PFC.Īs more electrically-powered devices are connected to the grid, the increased distortion to the electric grid can create problems in the electrical distribution network.
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