totempole
Power Tips #138: 3 ways to close the control loop for totem-pole bridgeless PFC
Introduction Among all power factor correction (PFC) topologies, totem-pole bridgeless PFC provides the best efficiency; therefore, it is widely used in servers and data centers. However, closing the current control loop of a continuous conduction mode (CCM) totem-pole bridgeless PFC is not as straightforward as it is for a traditional PFC. A traditional PFC operating…