Fast Turn-Off, Dual-Channel Intelligent Rectifier with Adaptive Forward Regulation Voltage and Ultra-Low Sleep Mode Current

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The MP6928A is a dual-channel, fast-turn off, intelligent rectifier for synchronous rectification in LLC-resonant converters.

The IC drives two N-channel MOSFETs and regulates their forward voltage drop to adaptive VFWD. The IC turns the MOSFETs off before the switching current goes negative.

The MP6928A has light-load functionality to latch off the gate driver under light-load conditions, thus limiting the current below 150μA.

Fast turn-off enables continuous conduction mode and discontinuous conduction mode. Internal reverse-current protection ensures safe MOSFET operation under high-frequency, continuous current conditions.

The MP6928A requires a minimal number of readily available, standard external components. It is available in an SOIC-8 package.

Advantages Include:

  • Fast turn-off speed (about 35ns)
  • Supports CCM, DCM, and CrCM mode
  • Has light-load function to latch off the gate driver under light-load conditions, limiting the current to 85μA
  • Drive two N-channel MOSFETs, adaptive forward voltage drop regulation


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