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NCP1365: Low Power Offline Constant Current & Constant Voltage Primary Side PWM Current-Mode Controller with High Voltage Startup Current Source

Datasheet: Low Power Offline Constant Current & Constant Voltage Primary Side PWM Current-Mode Controller with/without High Voltage Startup Current Source
Rev. 7 (454kB)
Product Overview
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» Product Change Notification
The NCP1365 offer a new solution targeting output power levels from a few watts up to 20 W in a universal-mains flyback application. Thanks to a novel method this new controller eliminates the need for a secondary feedback circuitry (typically an opto-coupler and TL431 reference) while achieving excellent line and load regulation. The NCP1365 operates in valley lockout quasi-resonant peak current mode control mode at high load to provide high efficiency. When the power on the secondary side starts to diminish, the controller automatically adjusts the duty-cycle then at lower load the controller enters in pulse frequency modulation at fixed peak current with a valley switching detection. This technique allows keeping the output regulation with tiny dummy load. Valley lockout at the first 4 valleys prevent valley jumping operation and then a valley switching at lower load provides high efficiency.
Features   Benefits
     
  • No frequency clamp, 80 or 110 kHz Maximum Switching Frequency
 
  • Prevents high frequency interference with a touchscreen
  • Quasi-Resonant with Valley Switching Operation
 
  • Offers high efficiency operation
  • 560-V Startup Current Source
 
  • Saves external HV FET or inefficient resistor divider
  • Fixed Peak Current & Deep frequency foldback @ light load operation
 
  • Low consumption at light load
  • Cycle by Cycle peak current limit
 
  • Safe operation
  • Wide Operation VCC range (up to 28 V)
 
  • Design flexibility
  • Internal Temperature Shutdown
 
  • Safe operation
  • CS & Vs/ZCD pin Short and Open Protection
 
  • Safe operation
  • Constant Current Primary-side feedback eliminates secondary controller
   
  • ±10% Current Regulation
   
  • Build-in soft-sart
   
  • Low Start-up current (2.5 μA typ.)
   
  • Clamped Gate-drive Output for Mosfet
   
  • Less than 10 mW No-Load Performance
   
Applications   End Products
  • AC-DC USB chargers for cell phones, tablets, and other portable devices
 
  • AC-DC USB chargers for cell phones, tablets, and other portable devices
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
NCP1365XS1GEVB Active
Pb-free
Low Power Offline Constant Current & Constant Voltage Primary Side PWM Current-Mode Controller with High Voltage Startup Current Source Evaluation Board
Availability & Samples
Specifications
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCP1365AABCYDR2G Active
Pb-free
Halide free
NCP1365 SOIC-7 751U 1 260 Tape and Reel 2500 $0.2933
NCP1365ACBAXDR2G Active
Pb-free
Halide free
NCP1365 SOIC-7 751U 1 260 Tape and Reel 2500 $0.2933
NCP1365BABCYDR2G Active
Pb-free
Halide free
NCP1365 SOIC-7 751U 1 260 Tape and Reel 2500 $0.2933
Market Leadtime (weeks) : 2 to 4
ON Semiconductor   (2020-09-02 00:00) : 97,500
Market Leadtime (weeks) : 4 to 8
ON Semiconductor   (2020-09-02 00:00) : 30,000
Market Leadtime (weeks) : 2 to 4
ON Semiconductor   (2020-09-02 00:00) : 17,500

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
NCP1365AABCYDR2G  
 $0.2933 
Pb
H
 Active   
Flyback
Current Mode
Variable
Yes
6.5
Yes
Yes
Yes
28
2000 / 1000
SOIC-7
NCP1365ACBAXDR2G  
 $0.2933 
Pb
H
 Active   
Flyback
Current Mode
Variable
Yes
6.5
Yes
Yes
Yes
28
2000 / 1000
SOIC-7
NCP1365BABCYDR2G  
 $0.2933 
Pb
H
 Active   
Flyback
Current Mode
Variable
No
6.5
Yes
Yes
Yes
28
2000 / 1000
SOIC-7
Case Outlines
751U   
Previously Viewed Products
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Featured Video
Low Power Offline Constant Current & Constant Voltage Primary Side PWM Current-Mode Controller - NCP1365XS1GEVB
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