Datasheet4U Logo Datasheet4U.com

NCP1680 - Totem Pole CrM Power Factor Correction Controller

Datasheet Summary

Description

Table 1.

Combined OVP/OTP fault pin.

The PFCOK pin is held low when the PFC output voltage is out of regulation and during fault conditions.

Features

  • Totem Pole PFC Topology Eliminates Input Diode Bridge Enabling Very High Efficiency & Compact Design.
  • AC Line Monitoring Circuit & AC Phase Detection.
  • Brownout Detection.
  • Critical Conduction Mode (CrM) Operation.
  • Discontinuous Conduction Mode (DCM) with Valley Turn On under Light Load Conditions.
  • Frequency Foldback in DCM with 25 kHz Minimum Frequency.
  • Digital Loop Compensation.
  • Simplified Valley Sensing.
  • Novel Cur.

📥 Download Datasheet

Datasheet preview – NCP1680

Datasheet Details

Part number NCP1680
Manufacturer ON Semiconductor
File Size 2.83 MB
Description Totem Pole CrM Power Factor Correction Controller
Datasheet download datasheet NCP1680 Datasheet
Additional preview pages of the NCP1680 datasheet.

📁 Similar Datasheet

  • NCP1651 - Single Stage Power Factor Controller (ON)
  • 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)
  • NCP1216 - PWM Current-Mode Controller (ON)
  • NCP1225 - Low Standby Power SMPS Controller (ON)
  • NCP1232 - Microprocessor Monitor (ON)
  • NCP1280 - Active Clamp Voltage Mode PWM Controller (ON)
Other Datasheets by ON Semiconductor
  • NCP1681 - Totem Pole Power Factor Correction Controller
  • NCP160 - Ultra-Low Noise and High PSRR LDO Regulator
  • NCP1600 - High Voltage PFC Controller
  • NCP1601A - Power Factor Correction Controller
  • NCP1601B - Power Factor Correction Controller
  • NCP1602 - High-Efficiency Power Factor Controller
  • NCP1603 - PFC/PWM Combo Controller
  • NCP1605 - Power Factor Controller

Full PDF Text Transcription

Click to expand full text
CrM Totem Pole PFC IC Totem Pole CrM Power Factor Correction Controller NCP1680 The NCP1680 is a Critical Conduction Mode (CrM) Power Factor Correction (PFC) controller IC designed to drive the bridgeless totem pole PFC topology. The bridgeless totem pole PFC consists of two totem pole legs: a fast switching leg driven at the PWM switching frequency and a second leg that operates at the AC line frequency. This topology eliminates the diode bridge present at the input of a conventional PFC circuit, allowing significant improvement in efficiency and power density.
Published: |