Fast turn off, Intelligent Synchronous Rectifier with Vfwd=30mV for flyback converters

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Product Description

The MP6905 is a low-drop, diode-emulator IC with external switch; MP6905 replaces Schottky diodes in high-efficiency, flyback converters. The chip regulates the forward drop of the external switch (about 30mV) and switches it off when the voltage becomes negative. MP6905 has a light-load sleep mode that reduces the quiescent current to <300uA. MP6905 is available in a compact SOIC-8 package.

Product Features

  • Works with 12V Standard and 5V Logic Level FETS
  • Compatible with Energy Star, 1W Standby Requirements
  • Fast Turn-off, Total Delay 20ns
  • Supports CCM, DCM and Quasi-Resonant Topologies
  • Supports High-side and Low-side Rectification
  • Saves Up to 1.5W in a Typical Notebook Adapter
  • Available in a SOIC-8 Package


  • fsw (max) (kHz)400
  • Iq (mA)2
  • Iop (mA)8
  • Drain Rating180
  • VDD (min) (V)8
  • VDD (max) (V)24
  • Pout (max) (W)150
  • PackageSOIC8-7
  • TypeController
  • GradeCatalog
  • Light-Load FunctionYes
  • Power Range DefinedYes
Quality Policy, Certificates & Reliability Reports
All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.