NCP1612: Power Factor Controller, Enhanced, High Efficiency

Description: The NCP1612 is active power factor corrected (PFC)...
  • The NCP1612 is active power factor corrected (PFC) controller specifically designed for use as a boost pre-converter 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 NCP1612 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. This device is particularly suited a PFC stage for LLC controllers due to its dedicated PFC_Okay Output.
  • 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 - Reduces accoustic noise and stress in the event of an overvoltage fault
  • -500 mA/+800 mA Drive Capability - Supports wide range of MOSFETs and power levels
  • Valley turn on - Improved efficiency amd reduced EMI generation
  • Wide Vcc Range of 9.5-35 Vdc - Easy to bias even under light load or high line conditions
  • Two Vcc startup versions: 10.5 V (A) and 17 V (B) - B version allows smaller Vcc capacitor and faster startup in self biased applications
  • AC Line Brownout Detection - Protects boost stage power components during line fault conditions
  • Cycle-by-cycle switch current monitoring - Enhances system robustness
  • Saturated inductor and shorted boost or bypass diode detection - Enhanced safety monitoring without extra components
  • PFC Okay Output - Can enable downstream controller of stable PFC rail
  • Latch Off Input - Simplifies implemented latch protection for power supply
  • Independent bulk overvoltage and undervoltage monitoring - Increased system reliablity
  • Open Ground Pin Fault Monitoring - Simplifies safety testing
  • Near Unity Power Factor
  • Thermal Shutdown
  • Applications
  • Offline Power Supplies
  • Lighting Ballasts
  • LED Lighting Drivers and Power Supplies
  • End Products
  • Flat TV
  • All-In-One Computers
  • High Powered Adapters
  • LED Lighting
  • Technical Documentation & Design Resources
    Evaluation/Development Tool Information
    Availability and Samples
    NCP1612A1DR2G
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Power Factor Controller, Enhanced, High Efficiency, VBUV 1V
  • Package Type: SOIC-10 NB
  • Package Case Outline: 751BQ
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 2500
  • NCP1612A2DR2G
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Power Factor Controller, Enhanced, High Efficiency, UVP2 if VFOVP
  • Package Type: SOIC-10 NB
  • Package Case Outline: 751BQ
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 2500
  • Inventory

  • Market Leadtime (weeks):2 to 4
  • Arrow:0
  • ON Semiconductor:17,500
  • NCP1612A3DR2G
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Power Factor Controller, Enhanced, High Efficiency, VBUV 1V
  • Package Type: SOIC-10 NB
  • Package Case Outline: 751BQ
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 2500
  • Inventory

  • Market Leadtime (weeks):Contact Factory
  • Arrow:0
  • Digikey:>1K
  • NCP1612ADR2G
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Power Factor Controller, Enhanced, High Efficiency, and 10.5 V Startup Level
  • Package Type: SOIC-10 NB
  • Package Case Outline: 751BQ
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 2500
  • NCP1612BDR2G
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Power Factor Controller, Enhanced, High Efficiency, and 17 V Startup Level
  • Package Type: SOIC-10 NB
  • Package Case Outline: 751BQ
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 2500
  • Inventory

  • Market Leadtime (weeks):4 to 8
  • Arrow:0
  • ON Semiconductor:2,500
  • Packages
    Applications
    Specifications
  • PFC Mode: DCM  CRM 
  • Frequency Operation: Variable  Fixed 
  • Control Mode: Current Mode 
  • Topology: Step-Up 
  • fSW Typ (kHz): Variable 
  • VCC Max (V): 35 
  • Drive Cap. (mA): 500 / 800 
  • UVLO (V):
  • Latch: Yes 
  • UVP: Yes 
  • Inhibition: Yes 
  • Package Type: SOIC-10 NB 
  • ON Semiconductor Full Web Site