NCP1611: Power Factor Controller, Enhanced, High Efficiency

Description: The NCP1611 is active power factor corrected (PFC)...
  • The NCP1611 is active power factor corrected (PFC) controller specifically designed for use as a boost preconverter in ac-dc adapters, flat TVs, lighting ballasts and other medium powered offline applications. The controller is based on an innovative Current Controlled Frequency Foldback(CCFF) method. In this mode, the circuit classically operates in Critical conduction Mode (CrM) when the inductor current exceeds a programmable value. When the current is below this preset level, the NCP1611 linearly reduces the frequency down to about 20 kHz when the current is at a null. CCFF maximizes the efficiency at both nominal and light load. In particular, the standby losses are reduced to a minimum. The controller features a robust suite of protection features to properly handle an array of power supply operating and fault conditions.
  • Features
  • Critical Conduction mode with current controlled frequency foldback - Optimizes conversion efficiency across load range
  • Dynamic Response Enhancer - Improved transient response for line and load steps
  • Soft Overvoltage Protection (S-OVP) - Reduces accoustic noise and stress in the even of an overvoltage fault
  • -500 mA/+800 mA Drive Capability - High drive to support wide range of FETS and power levels
  • Valley Turn On - Improved efficiency and reduced EMI generation
  • Wide Vcc Range of 9.5-35V - Easy to Bias even at light load and high line conditions
  • Two Vcc Startup Versions: 10.5V (A) and 17V (B) - B version allows smaller Vcc capacitor and faster startup in self biased applications
  • AC Line Brownout Detection - Protect boost stage from fault conditions
  • Saturated Inductor and shorted boost or bypass protection - Enhances safe operating monitoring without extra components
  • Open Pin Protection including Ground - Enhanced fault handling
  • Undervoltage and Fast Over voltage protection - Robust safety handling
  • Near Unity Power Factor
  • Cycle-by-cycle current protection
  • Applications
  • Offline Power Supplies
  • Lighting Ballasts
  • End Products
  • Flat TVs
  • All-in-one Computers
  • High Powered Adapters
  • LED Lighting Power Supplies and Drivers
  • Dimmable Fluorescent Ballasts
  • LED Lighting
  • Technical Documentation & Design Resources
    Evaluation/Development Tool Information
    Product Change Notification
    Availability and Samples
    NCP1611ADR2G
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Power Factor Controller, Enhanced, High Efficiency, with 10.5 V Startup (typ)
  • Package Type: SOIC-8
  • Package Case Outline: 751-07
  • MSL: 2
  • Container Type: REEL
  • Container Qty: 2500
  • Inventory

  • Market Leadtime (weeks):Contact Factory
  • Arrow:0
  • Digikey:>1K
  • Mouser:>1K
  • NCP1611BDR2G
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Power Factor Controller, Enhanced, High Efficiency, with 17 V Startup (typ)
  • Package Type: SOIC-8
  • Package Case Outline: 751-07
  • MSL: 2
  • Container Type: REEL
  • Container Qty: 2500
  • Inventory

  • Market Leadtime (weeks):17 to 20
  • Arrow:0
  • Digikey:<1K
  • Mouser:>1K
  • Packages
    Applications
    Specifications
  • PFC Mode: CRM 
  • Frequency Operation: Variable 
  • Control Mode: Current Mode 
  • Topology: Step-Up 
  • fSW Typ (kHz): Variable 
  • VCC Max (V): 35 
  • Drive Cap. (mA): 500 / 800 
  • UVLO (V):
  • Latch: No 
  • UVP: Yes 
  • Inhibition: Yes 
  • Package Type: SOIC-8 
  • ON Semiconductor Full Web Site