Power Factor Correction - PFC

NCP1937 PFC & QR Flyback Controller

onsemi NCP1937 PFC and QR Flyback Controller 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 a 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.

Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (PEN) Filter the results in the table by unit price based on your quantity.	Qty.	Switching Frequency	Minimum Operating Temperature	Maximum Operating Temperature	Mounting Style	Package / Case	Packaging
Power Factor Correction - PFC COMBO PFC & QUAZI FLYBACK NCP1937B1DR2G onsemi 1: S/8.17 2,392In Stock	Mfr. Part # NCP1937B1DR2G Mouser Part # 863-NCP1937B1DR2G	onsemi	Power Factor Correction - PFC COMBO PFC & QUAZI FLYBACK Learn More about onsemi ncp1937 controller	Datasheet	2,392In Stock	Cut Tape S/8.17 S/6.03 S/5.53 S/4.94 View Reel S/3.86 S/4.63 S/4.48 S/4.13 S/3.86 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	250 kHz	- 40 C	+ 125 C	SMD/SMT	SOIC-20	Reel, Cut Tape, MouseReel
Power Factor Correction - PFC COMBO PFC & QUAZI FLYBACK CNTRL onsemi NCP1937A2DR2G NCP1937A2DR2G onsemi 1: S/8.17 2,475In Stock	Mfr. Part # NCP1937A2DR2G Mouser Part # 863-NCP1937A2DR2G	onsemi	Power Factor Correction - PFC COMBO PFC & QUAZI FLYBACK CNTRL Learn More about onsemi ncp1937 controller	Datasheet	2,475In Stock	Cut Tape S/8.17 S/6.03 S/5.53 S/4.94 View Reel S/3.93 S/4.63 S/4.48 S/4.40 S/3.93 MouseReel Available	Min.: 1 Mult.: 1 : 2,500						Reel, Cut Tape, MouseReel
Power Factor Correction - PFC COMBO PFC & QUAZI FLYBACK CONTRL onsemi NCP1937B51DR2G NCP1937B51DR2G onsemi 2,500: S/3.79 Non-Stocked Lead-Time 32 Weeks	Mfr. Part # NCP1937B51DR2G Mouser Part # 863-NCP1937B51DR2G	onsemi	Power Factor Correction - PFC COMBO PFC & QUAZI FLYBACK CONTRL	Datasheet	Non-Stocked Lead-Time 32 Weeks	Reel S/3.79	Min.: 2,500 Mult.: 2,500 : 2,500						Reel
Power Factor Correction - PFC COMBO PFC & QUAZI FLYBACK CNTRL onsemi NCP1937C4DR2G NCP1937C4DR2G onsemi 2,500: S/4.32 Non-Stocked Lead-Time 31 Weeks	Mfr. Part # NCP1937C4DR2G Mouser Part # 863-NCP1937C4DR2G	onsemi	Power Factor Correction - PFC COMBO PFC & QUAZI FLYBACK CNTRL Learn More about onsemi ncp1937 controller	Datasheet	Non-Stocked Lead-Time 31 Weeks	Reel S/4.32	Min.: 2,500 Mult.: 2,500 : 2,500						Reel
Power Factor Correction - PFC COMBO PFC & QUAZI FLYBACK CONTRL onsemi NCP1937C61DR2G NCP1937C61DR2G onsemi 2,500: S/3.93 Non-Stocked Lead-Time 34 Weeks	Mfr. Part # NCP1937C61DR2G Mouser Part # 863-NCP1937C61DR2G	onsemi	Power Factor Correction - PFC COMBO PFC & QUAZI FLYBACK CONTRL Learn More about onsemi ncp1937 controller	Datasheet	Non-Stocked Lead-Time 34 Weeks	Reel S/3.93	Min.: 2,500 Mult.: 2,500 : 2,500						Reel

NCP1937 PFC & QR Flyback Controller

Applied Filters:

Customer Service Office

Company

Resources

Support