Highly integrated Active Clamp PWM controller

High Efficiency 300kHz, 25V Boost/SEPIC Controller with Output Current Limit

High Efficiency, 28V Input. Single Inductor Synchronous Step Up/Down Regulator

The SY21401 is a current mode DC/DC controller targeted for Boost, SEPIC, Flyback and Forward applications. The SY21401 has an accurate DC input current limit. External compensation provides flexible adjustment of control loops for different applications. The internal low side driver is capable of sourcing 1.5A and sinking 3A current.