NCP1380: Controller, Quasi-Resonant Current Mode

Description: The NCP1380 is a high performance device aimed at ...
  • The NCP1380 is a high performance device aimed at powering quasi-resonant converters. Capitalizing on a proprietary valley lockout system, the controller shifts gears and reduces the switching frequency as the power loading becomes lighter. This results in a stable operation despite switching events always triggering in the drain-source valley. This system works down to the 4th valley and toggles to a variable frequency mode beyond, ensuring an excellent standby power performance. To improve the safety in the overload situations, the controller includes an Over Power Protection (OPP) circuit which clamps the delivered power at high-line. Safety-wise, a fixed internal timer relies on the feedback voltage to detect a fault. Once the timer elapses, the controller stops and stays latched for option A and C or enters auto-recovery mode for option B and D. Particularly well suited for adapter applications, the controller features a pin to implement either a combined overvoltage / overtemperature protection (version A and B) or a combined brownout / overvoltage protection (version C and D).
  • Features
  • Quasi-resonant peak current mode control operation - High efficiency operation
  • Valley switching operation with valley lockout - Provides for noise-immune operation
  • Frequency foldback at light load - Improves light load efficiency
  • Adjustable overpower protection
  • Auto-recovery or latched internal output short circuit protection
  • Fixed internal 80 ms timer for short circuit protection
  • Combined overvoltage and overtemperature protection (A and B versions)
  • Combined overvoltage protection and brownout (C and D versions)
  • VCC range operation up to 28 V
  • Applications
  • AC-DC adapters for notebooks
  • Offline battery chargers
  • Auxiliary power supplies (flat TV, appliances)
  • End Products
  • Power AC-DC converters for adapters, TVs and set top boxes
  • Technical Documentation & Design Resources
    Product Change Notification
    Availability and Samples
    NCP1380ADR2G
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Controller, Quasi-Resonant Current Mode, overvoltage, overtemperature, latched overpower protection
  • Package Type: SOIC-8
  • Package Case Outline: 751-07
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 2500
  • Inventory

  • Market Leadtime (weeks):2 to 4
  • Arrow:0
  • Digikey:>1K
  • PandS:>1K
  • NCP1380BDR2G
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Controller, Quasi-Resonant Current Mode, overvoltage, overtemperature, auto-recovery overpower protection
  • Package Type: SOIC-8
  • Package Case Outline: 751-07
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 2500
  • Inventory

  • Market Leadtime (weeks):8 to 12
  • Arrow:0
  • Digikey:>1K
  • Newark:>1K
  • PandS:>1K
  • NCP1380CDR2G
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Controller, Quasi-Resonant Current Mode, brownout, overvoltage, latched overpower protection
  • Package Type: SOIC-8
  • Package Case Outline: 751-07
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 2500
  • Inventory

  • Market Leadtime (weeks):4 to 8
  • Arrow:0
  • PandS:>1K
  • NCP1380DDR2G
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Controller, Quasi-Resonant Current Mode, brownout, overvoltage, auto-recovery overpower protection
  • Package Type: SOIC-8
  • Package Case Outline: 751-07
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 2500
  • Inventory

  • Market Leadtime (weeks):4 to 8
  • Arrow:0
  • Avnet:>10K
  • Digikey:>1K
  • FutureElectronics:>1K
  • Newark:>1K
  • PandS:>1K
  • Packages
    Applications
    Specifications
  • Topology: Flyback 
  • Control Mode: Current Mode 
  • fsw Typ (kHz): Variable 
  • Stand-by Mode: Yes 
  • UVLO (V):
  • Short Circuit Protection: Yes 
  • Latch: Yes  No 
  • Soft Start: Yes 
  • VCC Max (V): 28 
  • Drive Cap. (mA): 500 / 800 
  • Package Type: SOIC-8 
  • ON Semiconductor Full Web Site