NCP1611 Enhanced, High-Efficiency Power Factor Controller The NCP1611 is designed to drive PFC boost stages based on an innovative Current Controlled Frequency Fold−back (CCFF) method.
In this mode, the circuit classically operates in Critical conduction Mode (CrM) when the inductor current exceeds a www.
onsemi.
com programmable value.
When the current is below this preset level, the NCP1611 linearly decays the frequency down to about 20 kHz when MARKING the current is null.
CCFF maximizes the efficiency at both nominal DIAGRAM and light load.
In particular, the stand−by losses are reduced to a minimum.
Like in FCCrM controllers, internal circuitry allows near−unity power factor ev...

Since 2006. D4U Semicon,
Electronic Components Datasheet Search Site. (Privacy Policy & Contact)