L4984
CCM PFC controller
Features
■ Line-modulated fixed-off-time (LM-FOT) control of CCM-operated PFC pre-regulators
■ Proprietary LM-FOT modulator for nearly fixedfrequency operation
■ Proprietary multiplier design for minimum THD of AC input current
■ Fast “bi-directional” input voltage feedforward (1/V2 correction)
■ Accurate adjustable output overvolt...
