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NCP12400: Fixed Frequency Current Mode Controller for Flyback Converters (Integrated HV Startup and X2 Discharge Circuit)

Datasheet: Fixed Frequency Current Mode Controller for Flyback Converters
Rev. 5 (4823kB)
Product Overview
»View Material Composition
» Product Change Notification
The NCP12400 is a new fixed−frequency current−mode controller featuring the Dynamic Self−Supply. This function greatly simplifies the design of the auxiliary supply and the VCC capacitor by activating the internal startup current source to supply the controller during start−up, transients, latch, stand−by etc. This device contains a special HV detector which detects the application unplug from the ac input line and triggers the X2 discharge current. This HV structure allows the brown−out detection as well. It features a timer−based fault detection that ensures the detection of overload and an adjustable compensation to help keep the maximum power independent of the input voltage. Due to frequency foldback, the controller exhibits excellent efficiency in light load condition while still achieving very low standby power consumption. Internal frequency jittering, ramp compensation, and a versatile latch input make this controller an excellent candidate for the robust power supply designs. A dedicated Off Mode allows to reach the extremely low no load input power consumption via “sleeping” whole device and thus minimize the power consumption of the control circuitry. In addition, the NCP12400 features a quiet skip mode which lockes the skip frequency below audiable range. This feature greatly reduces audiable noise caused by the switching pulses during skip mode.
Features   Benefits
     
  • Integrated HV Start-up and X2 Discharge
 
  • Reduces Overall System Cost and Complexity
  • Quiet Skip Feature
 
  • Ensures Skip Mode Operation Outside Audible Range
  • Frequency Foldback and Skip Mode
 
  • Average Efficiency Meets CoC Tier 2 Compliance
  • Timer−Based Overload Protection with Latched Or Auto-recovery
 
  • Configurable Protection Tailored for Application Needs.
  • Fault Input for Overvoltage and Over Temperature Protection
 
  • Meets Safety Requirements
  • Adjustable Overpower Protection Dependant on the Mains Voltage
 
  • Meets Safety Requirements
  • No Load Standby Power < 30 mW
 
  • Meets CoC Tier 2 Compliance
  • Frequency Modulation for Softened EMI Signature
 
  • Meets EMI Compliance
Applications   End Products
  • Auxiliary Power Supply for Computing Device
  • General 20 W to 65 W AC-DC Adapter
 
  • Offline Adapters for Notebooks, LCD, and Printers
  • Offline Battery Chargers
  • Consumer Electronic Power Supplies
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
NCP12400A65WGEVB Active
Pb-free
Fixed Frequency Current Mode Controller for Flyback Converters
Availability & Samples
Specifications
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCP12400BAHAB0DR2G Active
Pb-free
Halide free
NCP12400 SOIC-7 751U 1 260 Tape and Reel 2500 $0.32
NCP12400BAHBB0DR2G Active
Pb-free
Halide free
NCP12400 SOIC-7 751U 1 260 Tape and Reel 2500 $0.32
NCP12400BBBBA0DR2G Active
Pb-free
Halide free
NCP12400 SOIC-7 751U 1 260 Tape and Reel 2500 Contact Sales Office
NCP12400BBBBB2DR2G Active
Pb-free
Halide free
NCP12400 SOIC-7 751U 1 260 Tape and Reel 2500 $0.32
NCP12400BBEBA0DR2G Active
Pb-free
Halide free
NCP12400 SOIC-7 751U 1 260 Tape and Reel 2500 $0.32
NCP12400BBHAA1DR2G Active
Pb-free
Halide free
NCP12400 SOIC-7 751U 1 260 Tape and Reel 2500 $0.32
NCP12400BBHAB0DR2G Active 
Pb-free
Halide free
NCP12400 SOIC-7 751U 1 260 Tape and Reel 2500 $0.32
NCP12400CAHAB0DR2G Active
Pb-free
Halide free
NCP12400 SOIC-7 751U 1 260 Tape and Reel 2500 $0.32
NCP12400CBAAB0DR2G Active
Pb-free
Halide free
NCP12400 SOIC-7 751U 1 260 Tape and Reel 2500 $0.32
NCP12400CBBAB0DR2G Active
Pb-free
Halide free
NCP12400 SOIC-7 751U 1 260 Tape and Reel 2500 $0.32
NCP12400CBHAA0DR2G Active
Pb-free
Halide free
NCP12400 SOIC-7 751U 1 260 Tape and Reel 2500 $0.32
NCP12400EAHBB0DR2G Active
Pb-free
Halide free
NCP12400 SOIC-7 751U 1 260 Tape and Reel 2500 $0.32
Market Leadtime (weeks) : 4 to 8
Market Leadtime (weeks) : 4 to 8
ON Semiconductor   (2020-09-02 00:00) : 5,000
Market Leadtime (weeks) : 17 to 20
Market Leadtime (weeks) : 2 to 4
ON Semiconductor   (2020-09-02 00:00) : 17,500
Market Leadtime (weeks) : 8 to 12
Market Leadtime (weeks) : 2 to 4
ON Semiconductor   (2020-09-02 00:00) : 35,000
Market Leadtime (weeks) : Contact Factory
ON Semiconductor   (2020-09-02 00:00) : 8,106
Market Leadtime (weeks) : 2 to 4
Market Leadtime (weeks) : 8 to 12
Market Leadtime (weeks) : 2 to 4
ON Semiconductor   (2020-09-02 00:00) : 42,500
Market Leadtime (weeks) : 13 to 16
Market Leadtime (weeks) : 13 to 16

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
NCP12400BAHAB0DR2G  
 $0.32 
Pb
H
 Active   
Flyback
Current Mode
65
null
Yes
8.9
Yes
Yes
Yes
28
500 / 800
SOIC-7
NCP12400BAHBB0DR2G  
 $0.32 
Pb
H
 Active   
Flyback
Current Mode
65
null
Yes
8.9
Yes
Yes
Yes
28
500 / 800
SOIC-7
NCP12400BBBBA0DR2G  
Pb
H
 Active   
Flyback
Current Mode
65
null
Yes
8.9
Yes
No
Yes
28
500 / 800
SOIC-7
NCP12400BBBBB2DR2G  
 $0.32 
Pb
H
 Active   
Flyback
Current Mode
65/100
null
Yes
8.9
Yes
No
Yes
28
500 / 800
SOIC-7
NCP12400BBEBA0DR2G  
 $0.32 
Pb
H
 Active   
Flyback
Current Mode
65
null
Yes
8.9
Yes
No
Yes
28
500 / 800
SOIC-7
NCP12400BBHAA1DR2G  
 $0.32 
Pb
H
 Active   
Flyback
Current Mode
100
null
Yes
8.9
Yes
No
Yes
28
500 / 800
SOIC-7
NCP12400BBHAB0DR2G  
 $0.32 
Pb
H
 Active   
Flyback
Current Mode
65
null
Yes
8.9
Yes
No
Yes
28
500 / 800
SOIC-7
NCP12400CAHAB0DR2G  
 $0.32 
Pb
H
 Active   
Flyback
Current Mode
65
null
Yes
8.9
Yes
Yes
Yes
28
500 / 800
SOIC-7
NCP12400CBAAB0DR2G  
 $0.32 
Pb
H
 Active   
Flyback
Current Mode
65
null
Yes
8.9
Yes
No
Yes
28
500 / 800
SOIC-7
NCP12400CBBAB0DR2G  
 $0.32 
Pb
H
 Active   
Flyback
Current Mode
65
null
Yes
8.9
Yes
No
Yes
28
500 / 800
SOIC-7
NCP12400CBHAA0DR2G  
 $0.32 
Pb
H
 Active   
Flyback
Current Mode
65
null
Yes
8.9
Yes
No
Yes
28
500 / 800
SOIC-7
NCP12400EAHBB0DR2G  
 $0.32 
Pb
H
 Active   
Flyback
Current Mode
65
null
Yes
8.9
Yes
Yes
Yes
28
500 / 800
SOIC-7
Case Outlines
751U   
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