APR34309C中文资料Secondary Side Synchronous Rectification Switcher数据手册Diodes规格书

描述 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.

\tThe N-Channel MOSFET has been optimized for low gate charge, low RDS(ON), fast switching speed and body diode reverse recovery performance.

\tThe 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. It can provide high performance solution for 5V output voltage application.

\tSame as AP4341, APR34309C detects the output voltage and provides a periodical signal when the output voltage is lower than a certain threshold. By fast response to secondary side voltage, APR34309C can effectively improve the transient performance of primary side control system. 

\tThe APR34309C is available in SO-8EP package.

特性 Features

Synchronous Rectification for DCM Operation Flyback
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\t\tEliminate Resonant Ring Interference
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\t\tFast Detector of Supply Voltages
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\t\tFewest External Components
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\t\tTotally Lead-free & Fully RoHS Compliant 
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\t\tHalogen and Antimony Free. “Green” Device

应用 Application

Adapters/Chargers for Cell/Cordless Phones, ADSL Modems, MP3 and Other Portable Apparatus
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\t\tStandby and Auxiliary Power Supplies