POWER FACTOR CORRECTION (PFC) DEVICE WITH SWITCHING ANALYSIS CIRCUIT

摘要

An apparatus includes an alternating current (AC) input node. The apparatus also includes a power factor correction (PFC) circuit with a first inductor coupled between the AC input node and a switch node. The apparatus also includes a switching analysis circuit for the PFC circuit. The switching analysis circuit includes a second inductor inductively coupled to the first inductor. The switching analysis circuit also includes a rectifier coupled to the second inductor. The switching analysis circuit also includes a sensing resistor coupled to the rectifier.