NCP4303A/NCP4303B pdf,datasheet
Secondary Side Synchronous RecTIficaTIon Driver for High EfficiencySMPS Topologies
The NCP4303A/B is a full featured controller and driver tailored tocontrol synchronous recTIficaTIon circuitry in switch mode powersupplies. Thanks to its versatility, it can be used in various topologies such as flyback, forward and Half Bridge Resonant LLC.