Datasheet4U Logo Datasheet4U.com

NCP81178 Datasheet Secondary Synchronous Rectifier Driver

Manufacturer: onsemi

📥 Download Datasheet

Overview

NCP81178 Secondary Synchronous Rectifier Driver for Forward Converters The NCP81178 is a secondary−side synchronous rectifier driver designed for isolated power converters, especially actively clamped forward and fly−back, and asymmetric half−bridge converters.

The NCP81178 drives two N−channel MOSFETs on the secondary side in a complementary manner.

It accepts a PWM input signal derived from the secondary winding or an auxiliary winding on the main power transformer.

Key Features

  • N.
  • Channel Synchronous Rectifier MOSFET Driver.
  • PWM Input Derived from a Winding on the Main Transformer or Directly from a Pulse Transformer.
  • Internally Generated PWM Threshold Voltage that can be Programmed Externally.
  • Pre.
  • bias Startup Capability.
  • Primary Shutdown Detection.
  • Frequency Detection Window.
  • Wide VIN/VCC Range: 4.5 V to 14 V.
  • 6 V/150 mA LDO for VCC Supply.
  • 4.5 A/3.8 A Sink and 3 A Source.

More Datasheets from onsemi

Part Number Description
NCP81172 2-Phase Synchronous Buck Controller
NCP81174 4/3/2-Phase Synchronous Buck Controller
NCP81174N 4/3/2-Phase Synchronous Buck Controller
NCP81105 1/2/3 Phase Power Controller
NCP81105H 1/2/3 Phase Power Controller
NCP81111 3 Phase VR12.5-6 High Speed Digital Controller
NCP81119 Multiple-Phase Controller
NCP81119A Multiple-Phase Controller
NCP81140 Multiple-Phase Controller
NCP81141 Single-Phase Controller