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NCP1937

Part Number	NCP1937
Manufacturer	ON Semiconductor
Description	Combination Power Factor Correction and Quasi- Resonant Flyback Controllers
Published	Jul 10, 2014
Detailed Description	DATA SHEET www.onsemi.com Combination Power Factor Correction and QuasiResonant Flyback Controllers for Adapters NCP193...
Datasheet	NCP1937 PDF File

Overview

DATA SHEET www.
onsemi.
com Combination Power Factor Correction and QuasiResonant Flyback Controllers for Adapters NCP1937 This combination IC integrates power factor correction (PFC) and quasi−resonant flyback functionality necessary to implement a compact and highly efficient Switched Mode Power Supply for an adapter application.
The PFC stage exhibits near−unity power factor while operating in a Critical Conduction Mode (CrM) with a maximum frequency clamp.
The circuit incorporates all the features necessary for building a robust and compact PFC stage while minimizing the number of external components.
The quasi−resonant current−mode flyback stage features a proprietary valley−lockout circ...

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