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APR34309C - SECONDARY SIDE SYNCHRONOUS RECTIFICATION SWITCHER

Description

APR34309C is a secondary side Combo IC, which combines an NChannel MOSFET and a driver circuit designed for synchronous rectification (SR) in DCM operation.

It also integrates output voltage detect function for primary side control system.

Features

  • Synchronous Rectification for DCM Operation Flyback Eliminate Resonant Ring Interference Fast Detector of Supply Voltages Fewest External Components.
  • Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2).
  • Halogen and Antimony Free. “Green” Device (Note 3) Pin Assignments (Top View) DRISR 1 VDET 2 AREF 3 VCC 4 8 GND 7 GND 6 GND 5 DRAIN Note: The DRAIN pin of internal MOSFET is exposed PAD, which is at the bottom of IC (the dashed box). Th.

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Full PDF Text Transcription

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NEW PRODUCT A Product Line of Diodes Incorporated APR34309C SECONDARY SIDE SYNCHRONOUS RECTIFICATION SWITCHER Description APR34309C is a secondary side Combo IC, which combines an NChannel MOSFET and a driver circuit designed for synchronous rectification (SR) in DCM operation. It also integrates output voltage detect function for primary side control system. The N-Channel MOSFET has been optimized for low gate charge, low RDS(ON), fast switching speed and body diode reverse recovery performance. The synchronous rectification can effectively reduce the secondary side rectifier power dissipation and provide high performance solution. By sensing MOSFET drain-to-source voltage, APR34309C can output ideal drive signal with less external components.
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