feedback
Rate this webpage
Need
Support?

NCP1343: Quasi-Resonant Flyback Controller with Power Excursion Mode

Datasheet: High Frequency Quasi-Resonant Flyback Controller
Rev. 2 (700kB)
Product Overview
»View Material Composition
» Product Change Notification
The NCP1343 is a highly integrated quasi−resonant flyback controller suitable for designing high−performance off−line power converters. It features a proprietary valley−lockout circuitry, ensuring stable valley switching. This system works down to the 6th valley and transitions to frequency foldback mode to reduce switching losses. As the load decreases further, the NCP1343 enters quiet−skip mode to manage the power delivery while minimizing acoustic noise. Additionally, the NCP1343 integrates power excursion mode (PEM) to minimize transformer size in designs requiring high transient load capability.
Features   Benefits
     
  • Power Excursion Mode (PEM)
 
  • Minimize transformer size for peak power applications
  • Minimum Peak Current Modulation for Rapid Frequency Foldback (RFF)
 
  • Fast reduction of switching frequency for improved light load efficiency
  • Integrated HV Startup with Brownout Protection
 
  • Provides an efficient power-on source and protects against drops in input mains voltage
  • Valley Switching Operation with Valley Lockout
 
  • Maximizes the efficiency over the entire power range
  • Quiet-Skip Technology
 
  • Ensures Operation Outside Audible Range
Applications   End Products
  • AC-DC Adapters
  • Audio Power
 
  • Notebook Adapters
  • Smart Speakers & Subwoofers
Technical Documentation & Design Resources
Data Sheets (1) Package Drawings (1)
Availability & Samples
Specifications
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCP1343BADBDEAD1R2G Active 
Pb-free
Halide free
NCP1343, QR PWM with Power Excursion Mode SOIC-9 NB 751BP 1 260 Tape and Reel 2500 $0.44
NCP1343ENAAEBBD1R2G Active 
Pb-free
Halide free
NCP1343, QR PWM with Power Excursion Mode SOIC-9 NB 751BP 1 260 Tape and Reel 2500 $0.484
Market Leadtime (weeks) : 13 to 16
Market Leadtime (weeks) : Contact Factory

Product
Description
Pricing ($/Unit)
Compliance
Status
Topology
Control Mode
fsw Typ (kHz)
Stand-by Mode
UVLO (V)
Short Circuit Protection
Latch
Soft Start
VCC Max (V)
Drive Cap. (mA)
Package Type
NCP1343BADBDEAD1R2G  
 $0.44 
Pb
H
 Active   
Flyback
Current Mode
Variable
Yes
9
Yes
Yes
Yes
30
500 / 800
SOIC-9 NB
NCP1343ENAAEBBD1R2G  
 $0.484 
Pb
H
 Active   
Flyback
Current Mode
Variable
Yes
9
Yes
No
Yes
30
500 / 800
SOIC-9 NB
Case Outlines
751BP   
Previously Viewed Products
Clear List

Your request has been submitted for approval.
Please allow 2-5 business days for a response.
You will receive an email when your request is approved.
Request for this document already exists and is waiting for approval.