Datasheet4U Logo Datasheet4U.com

NCP1937 - Combination Power Factor Correction and Quasi- Resonant Flyback Controllers

Key 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 circuitry, ensuring stable valley switching. This system works down to the 4th valley and toggles to a frequency foldback mode with a minimum frequency clamp beyond the 4th valley to eliminate audible noise. Skip mode operation allows excellent efficiency in light load conditions while.

📥 Download Datasheet

Datasheet Details

Part number NCP1937
Manufacturer onsemi
File Size 1.16 MB
Description Combination Power Factor Correction and Quasi- Resonant Flyback Controllers
Datasheet download datasheet NCP1937 Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
NCP1030 Integrated DC-DC Converter ON
NCP1031 Integrated DC-DC Converter ON
NCP1086 1.5A Adjustable and 3.3V Fixed Output Linear Regulator ON
NCP1212 Current Mode PWM Controller ON
NCP1215 Low Cost Variable OFF Time Switched Mode Power Supply Controller ON

Other Datasheets by onsemi

Part Number Description
NCP1901 Primary Side Combination Resonant and PFC Controllers
NCP1910 High Performance Combo Controller
NCP1927 Combination Power Factor Correction Controller and Flyback Controller
NCP100 Sub 1.0V Precision Adjustable Shunt Regulator
NCP1000 Integrated Off-Line Switching Regulator

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
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 circuitry, ensuring stable valley switching.