Datasheet4U Logo Datasheet4U.com

NCP1681 Datasheet Totem Pole Power Factor Correction Controller

Manufacturer: onsemi

Overview: DATA SHEET .onsemi. Totem Pole Power Factor Correction Controller NCP1681 The NCP1681 is an innovative Multi−Mode (MM) and Continuous Conduction Mode (CCM) 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. The NCP1681 is available as a Fixed Frequency (NCP1681Ax) or Multi−Mode (NCP1681Bx) device.

Key Features

  • Totem Pole PFC Topology Eliminates Input Diode Bridge Enabling Very High Efficiency & Compact Design.
  • AC Line Monitoring Circuit & AC Phase Detection.
  • Brownout Detection.
  • Digital Loop Compensation.
  • Novel Current Sensing Scheme Providing Inductor Current Upslope and Downslope Sensing.
  • PFCOK Indicator.
  • Skip/Standby Mode for Optimizing Light Load Performance.
  • Near.
  • Unity Power Factor in All Operating Modes Multi.

More Datasheets from onsemi

Part Number Description
NCP1680 Totem Pole CrM 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
NCP1605A Power Factor Controller
NCP1605B Power Factor Controller

NCP1681 Distributor