The DiodesZetex APR3415 is a secondary side Combo IC, which combines an N-channel 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 APR3415 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, APR3415 can effectively improve the transient performance of primary side control system. The APR3415 is available in SO-8 package. Synchronous Rectification for DCM operation fly back Eliminates resonant ring interference Fast detector of Supply voltages Fewest external components