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NCP1623 - High-Efficiency Power Factor Controller

General Description

Pin Number Pin Number TSOP 6 SOIC

The error amplifier output is connected to this pin.

The regulation loop bandwidth is adjusted by the feedback compensation network connected between this pin and ground.

Key Features

  • Valley Synchronized Frequency Fold.
  • back (VSFF):.
  • CrM at Heavy Load.
  • DCM at Light Load by Dead Time Control.
  • Valley Switching in Both CrM and DCM.
  • On.
  • time Modulation for High PFC in Both CrM and DCM.
  • Follower Boost Capability (NCP1623A Only).
  • Lowered Output Voltage Regulation at Low Line.
  • High.
  • Efficient Boost Stage and Downsized Inductor Design.
  • Skip Mode for Light Load Regulation.
  • S.

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Datasheet Details

Part number NCP1623
Manufacturer onsemi
File Size 362.54 KB
Description High-Efficiency Power Factor Controller
Datasheet download datasheet NCP1623 Datasheet

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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.

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Enhanced, High-Efficiency Power Factor Controller NCP1623 Features • Valley Synchronized Frequency Fold−back (VSFF): ♦ CrM at Heavy Load ♦ DCM at Light Load by Dead Time Control ♦ Valley Switching in Both CrM and DCM • On−time Modulation for High PFC in Both CrM and DCM • Follower Boost Capability (NCP1623A Only) ♦ Lowered Output Voltage Regulation at Low Line ♦ High−Efficient Boost Stage and Downsized Inductor Design • Skip Mode for Light Load Regulation • Sleep Mode with Low Current Consumption (SOIC8 Only) • Fast Line / Load Transient Control ♦ Dynamic Response Enhancer at Output Undershoot ♦ Soft OVP and Fast OVP at Output Overshoot • Excessive Current Protection ♦ Over Current Protection (OCP) ♦ Over Stress Protection (OVS) • Brown Out Protection • Second Over Voltage Protection (OVP2