NCP1380 Quasi-Resonant Current-Mode Controller for High-Power Universal Off-Line Supplies www.onsemi.com The NCP1380 hosts a highperformance circuitry aimed to powering quasiresonant converters. Capitalizing on a proprietary QUASIRESONANT PWM valleylockout system, the controller shifts gears and reduces the CONTROLLER FOR HIGH POW- switching frequency as the power loading becomes lighter. This results in a stable operation despite switching events always occurring ER ACDC WALL th in the drainsource valley. This system works down to the 4 valley ADAPTERS and toggles to a variable frequency mode beyond, ensuring an excellent standby power performance. 8 To improve the safety in overload situations, the controller includes an Over Power Protection (OPP) circuit which clamps the delivered 1 power at highline. Safetywise, a fixed internal timer relies on the SOIC8 feedback voltage to detect a fault. Once the timer elapses, the D SUFFIX CASE 751 controller stops and stays latched for option A and C or enters autorecovery mode for option B and D. MARKING DIAGRAMS Particularly well suited for adapter applications, the controller features a pin to implement either a combined overvoltage / 8 overtemperature protection (Version A and B) or a combined 1380x brownout/overvoltage protection (Version C and D). ALYW Features 1 QuasiResonant Peak CurrentMode Control Operation 1380x = Specific Device Code Valley Switching Operation with ValleyLockout for NoiseImmune x = Device Option (A, B, C, or D) Operation A = Assembly Location Frequency Foldback at Light Load to Improve the Light Load L = Wafer Lot Y = Year Efficiency W = Work Week Adjustable Over Power Protection = PbFree Package AutoRecovery or Latched Internal Output ShortCircuit Protection Fixed Internal 80 ms Timer for ShortCircuit Protection PIN CONNECTIONS Combined Overvoltage and Overtemperature Protection (A and B Versions) ZCD 1 8 CT Combined Overvoltage Protection and BrownOut (C and D Versions) 2 7 FAULT FB +500 mA/800 mA Peak Current Source/Sink Capability 3 VCC CS 6 Internal Temperature Shutdown Direct Optocoupler Connection 4 5 DRV GND Extended V Range Operation Up to 28 V CC Extremely Low NoLoad Standby Power SO8 Package ORDERING INFORMATION These Devices are PbFree and are RoHS Compliant See detailed ordering and shipping information in the package dimensions section on page 25 of this data sheet. Typical Applications High Power acdc Converters for TVs, SetTop Boxes etc. Offline Adapters for Notebooks Semiconductor Components Industries, LLC, 2013 1 Publication Order Number: February, 2018 Rev. 6 NCP1380/DNCP1380 TYPICAL APPLICATION EXAMPLE HVBulk Vout GND NCP1380 A/B ZCD / OPP 1 8 2 7 OVP / OTP 6 3 4 5 GND Figure 1. Typical Application Schematic for A and B Versions HVBulk Vout GND NCP1380 C/D 1 ZCD / OPP 8 2 7 BO / OVP 3 6 4 5 GND Figure 2. Typical Application Schematic for C and D Versions www.onsemi.com 2