NCP1602: Power Factor Controller, Enhanced Light Load Efficiency

Datasheet: Enhanced, High-Efficiency Power Factor Controller
Rev. 7 (360kB)
Product Overview
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The 6-pin PFC controller NCP1602 is designed to drive PFC boost stages. It is based on an innovative Valley Synchronized Frequency Fold-back (VSFF) method. In this mode, the circuit classically operates in Critical conduction Mode (CrM) when control voltage exceeds a programmable value Vctrl,FF. When Vcontrol is below this preset level Vctrl,FF, the NCP1602 (versions [B**] and [D**]) linearly decays the frequency down to about 30 kHz until Vcontrol reaches the SKIP mode threshold. VSFF maximizes the efficiency at both nominal and light load. In particular, the stand-by losses are reduced to a minimum. Like in FCCrM controllers, internal circuitry allows near-unity power factor even when the switching frequency is reduced. Housed in a TSOP6 package, the circuit also incorporates the features necessary for robust and compact PFC stages, with few external components.
Features   Benefits
     
  • Critical Conduction mode with current controlled frequency foldback
 
  • Optimizes conversion efficiency across load range
  • Valley Synchronized Frequency Fold-back (VSFF)
 
  • Enhanced efficiency at light load conditions compared to CrM PFC
  • Works with or without a transformer w/ ZCD winding
 
  • Reduced inductor cost and simplified design
  • Dynamic Response Enhancer
 
  • Improved transient response for line and load steps
Applications   End Products
  • Offline power supply
 
  • Flat Panel TV
  • High Power Adapters
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCP1602ABASNT1G Active, Not Rec 
Pb-free
Halide free
NCP1602 TSOP-6 318G-02 1 260 Tape and Reel 3000 $0.2667
NCP1602ACCSNT1G Active, Not Rec 
Pb-free
Halide free
NCP1602 TSOP-6 318G-02 1 260 Tape and Reel 3000 $0.2667
NCP1602AEASNT1G Active, Not Rec 
Pb-free
Halide free
NCP1602 TSOP-6 318G-02 1 260 Tape and Reel 3000 $0.32
NCP1602AFCSNT1G Active, Not Rec 
Pb-free
Halide free
NCP1602 TSOP-6 318G-02 1 260 Tape and Reel 3000 $0.2667
NCP1602BEASNT1G Active, Not Rec 
Pb-free
Halide free
NCP1602 TSOP-6 318G-02 1 260 Tape and Reel 3000 $0.2667
NCP1602DCCSNT1G Active, Not Rec 
Pb-free
Halide free
NCP1602 TSOP-6 318G-02 1 260 Tape and Reel 3000 $0.2667
NCP1602DFCSNT1G Active, Not Rec 
Pb-free
Halide free
NCP1602 TSOP-6 318G-02 1 260 Tape and Reel 3000 $0.2667
Market Leadtime (weeks) : Contact Factory
ON Semiconductor   (2020-09-02 00:00) : 36,000
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
ON Semiconductor   (2020-09-02 00:00) : 51,000
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Case Outlines
318G-02   
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