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NCP1622: Power Factor Controller, Enhanced Light Load Efficiency

Datasheet: Enhanced, High-Efficiency Power Factor Controller
Rev. 4 (230kB)
Product Overview
»View Material Composition
» Product Change Notification
The 6-pin PFC controller NCP1622 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 NCP1622 (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 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
  • PC Power Supplies
  • Lighting Ballasts
  • Flat Screen TV
  • All Off Line Appliances Requiring Power Factor correction
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
NCP1622GEVB Active
Pb-free
160-W, Wide Mains, PFC Stage Driven by the NCP1622
STR-ACF-12V100WPSU-GEVB Active
Pb-free
Strata Enabled NCP1568 100W AC to DC Converter
Availability & Samples
Specifications
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCP1622AEASNT1G Active 
Pb-free
Halide free
NCP1622, Power Factor Controller, Enhanced Light Load Efficiency TSOP-6 318G-02 1 260 Tape and Reel 3000 $0.24
NCP1622BCCSNT1G Active
Pb-free
Halide free
NCP1622, Power Factor Controller, Enhanced Light Load Efficiency TSOP-6 318G-02 1 260 Tape and Reel 3000 $0.24
NCP1622BECSNT1G Active
Pb-free
Halide free
NCP1622, Power Factor Controller, Enhanced Light Load Efficiency TSOP-6 318G-02 1 260 Tape and Reel 3000 $0.24
NCP1622DCCSNT1G Active
Pb-free
Halide free
NCP1622, Power Factor Controller, Enhanced Light Load Efficiency TSOP-6 318G-02 1 260 Tape and Reel 3000 $0.24
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : 4 to 8
Market Leadtime (weeks) : 2 to 4
FutureElectronics   (2020-08-19 00:00) : >1K
Market Leadtime (weeks) : 4 to 8

Product
Description
Pricing ($/Unit)
Compliance
Status
PFC Mode
Frequency Operation
Control Mode
Topology
fSW Typ (kHz)
VCC Max (V)
Drive Cap. (mA)
UVLO (V)
Latch
UVP
Inhibition
Package Type
NCP1622AEASNT1G  
 $0.24 
Pb
H
 Active   
CRM
Variable
Current Mode
Step-Up
Variable
30
500 / 800
9
Yes
Yes
No
TSOP-6
NCP1622BCCSNT1G  
 $0.24 
Pb
H
 Active   
CRM
Variable
Current Mode
Step-Up
Variable
30
500 / 800
9
Yes
Yes
No
TSOP-6
NCP1622BECSNT1G  
 $0.24 
Pb
H
 Active   
CRM
Variable
Current Mode
Step-Up
Variable
30
500 / 800
9
Yes
Yes
No
TSOP-6
NCP1622DCCSNT1G  
 $0.24 
Pb
H
 Active   
CRM
Variable
Current Mode
Step-Up
Variable
30
500 / 800
9
Yes
Yes
No
TSOP-6
Case Outlines
318G-02   
Previously Viewed Products
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Featured Video
160-W, Wide mains, PFC Stage Driven by the NCP1622 Evaluation Board - NCP1622GEVB
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