High Noise Immunity, Fast Turn-off Intelligent Rectifier with Light Load Management for LLC



The MP6903 is a low-drop diode emulator that, combined with an external switch, replaces Schottky diodes in high-efficiency LLC converters. The chip regulates the forward drop of an external switch to about 70mV and switches it off as soon as the voltage goes negative. MP6903 has a light-load sleep mode that reduces the quiescent current to < 300µA.


  • Works with Standard and Logic-Level FETS
  • Compatible with Energy Star, 1W Standby Requirements
  • VDD Range from 8V to 24V
  • Fast Turn-Off: Total Delay of 20ns
  • Max 400kHz Switching Frequency
  • Supports DCM, CCM and CrCM Operation
  • Supports High-Side and Low-Side Rectification
  • Power Savings of Up to 1.5W for a Typical Notebook Adapter


  • Turn-Off Threshold (mV)999
  • Ishutdown (µA)150
  • 最小输入电压999
  • Vin (max) (V)999
  • Iq (mA)0.25
  • Iop (mA)8
  • Drain Rating180
  • Turn-Off Delay (ns)35
  • VCC (min) (V)6
  • Turn-On Delay (ns)150
  • Turn-On Threshold (mV)70
  • Min On Time (ns)1000
  • VCC (typ) (V)15
  • Pout (max) (W)400
  • fsw (max) (kHz)up to 300
  • VCC (max) (V)27
  • PackageSOIC-8
  • TypeController
  • GradeCatalog
  • Light-Load FunctionYes
  • Power Range DefinedNo

High Efficiency Synchronous Rectification EV Board

The EV6903DS-00A is an evaluation board for the MP6903DS. It is configured to provide synchronous rectification solution for LLC topology.

MP6903DS features a synchronous gate output which enables high efficiency rectification by relating the schottky rectifier with a low Ron MOSFET.

US$ 25.00 + tax