Power Factor Controllers | NCP1603

PFC/PWM Combo Controller with Integrated High Voltage Startup and Standby Capability

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The NCP1603 is a Power Factor Correction (PFC) and Pulse Width Modulation (PWM) combo controller. It offers extremely low no-load standby power consumption that is suitable for the low-power consumer markets because of skipping cycle operation and PFC-stage shutdown while standby. The PFC-stage is implemented in critical or discontinuous mode (CRM/DCM) boost. The PWM-stage is implemented in continuous or discontinuous mode flyback.

  • Notebook adapters
  • TV/Monitors

  • Co-package PWM and PFC solutions
  • Integrated maximum 500V lossless high-voltage startup circuit
  • Fault protection implemented by a timer and independt of badly coupled auxiliary transformer winding
  • PFC shutdown and skipping cycle operation in standby
  • CRM and DCM PFC without degrading power factor
  • Optional over-voltage protection (OVP)latch
  • Optional synchronization capability
  • Dual thermal shutdown

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