NCP1622 Enhanced, High-Efficiency Power Factor Controller

PublishTime：2021-10-12

The 6−pin PFC controller NCP1622 is designed to drive PFC boost stages. It is based on an innovative Valley Synchronized Frequency Fold−back (VSFF) method. In this mode, the circuit classically operates in Critical conduction Mode (CrM) when V-control voltage exceeds a programmable value V-ctrl,FF. When V-control is below this preset level V-ctrl,FF, the NCP1622 (versions [B**] and [D**]) linearly decays the frequency down to about 30 kHz until V-control reaches the SKIP mode threshold. VSFF maximizes the efficiency at both nominal 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 even when the switching frequency is reduced. Housed in a TSOP6 package, the circuit also incorporates the features necessary for robust and compact PFC stages, with few external components.

Brand of Product：	ON Semiconductor
Part#：	NCP1622 、 NCP1622AEASNT1G 、 NCP1622BCCSNT1G 、 NCP1622BECSNT1G 、 NCP1622DCCSNT1G More Part#
Product Category：	High-Efficiency Power Factor Controller 、 PFC controller More
Application：	[ PC Power Supplies ][ Lighting Ballasts ][ LED ][ Fluorescent ][ Flat TV ][ All Off Line Appliances Requiring Power Factor Correction ] More
Data Type：	Datasheet More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：	TSOP−6
Language：	English Chinese Chinese and English Japanese
Date of Creation：	November, 2017
Version Number：	Rev. 4
Data Encoding：	NCP1622/D
Data Size：	315 KB

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