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Apr 25, 2008 The FAN7529 is an active power factor correction (PFC) controller for the boost PFC application that operates in the critical conduction mode The FAN7529 is an active power factor correction (PFC) controller for boost PFC applications that operates in critical conduction mode (CRM). It uses the voltage FAN7529 , FAN7530,. FAN7930. BCM PFC +. QR PWM. FAN6921. CCM. Continuous Conduction Mode. BCM (or CRM or TM). Boundary Conduction Mode. Abstract. When a PFC is in discontinuous conduction mode, the inductor current will resonant between the boost inductor and MOSFET parasite capacitance. Mar 30, 2012 Before applying power to the FEBFCM8531_B01H300A evaluation board, it is imperative that all involved personnel read and understand the