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NCP1380 - Quasi-Resonant Current Mode Controller

Description

Pin N5 Pin Name 1 ZCD Function Zero Crossing Detection Adjust the over power protection 2 FB Feedback pin 3 CS Current sense 4 GND 5 DRV Driver output 6 VCC Supplies the controller 7 Fault Over voltage and Over temperature protection (A and B versions) Over

Features

  • a pin to implement either a combined overvoltage / overtemperature protection (Version A and B) or a combined brown.
  • out/overvoltage protection (Version C and D). Features.
  • Quasi.
  • Resonant Peak Current.
  • Mode Control Operation.
  • Valley Switching Operation with Valley.
  • Lockout for Noise.
  • Immune Operation.
  • Frequency Foldback at Light Load to Improve the Light Load Efficiency.
  • Adjustable Over Power Protection.
  • Auto.

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Datasheet preview – NCP1380

Datasheet Details

Part number NCP1380
Manufacturer ON Semiconductor
File Size 478.21 KB
Description Quasi-Resonant Current Mode Controller
Datasheet download datasheet NCP1380 Datasheet
Additional preview pages of the NCP1380 datasheet.

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Full PDF Text Transcription

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DATA SHEET www.onsemi.com Quasi-Resonant Current-Mode Controller for High-Power Universal Off-Line Supplies NCP1380 The NCP1380 hosts a high−performance circuitry aimed to 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 occurring 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 overload situations, the controller includes an Over Power Protection (OPP) circuit which clamps the delivered power at high−line.
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