Highly integrated Active Clamp PWM controller

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

Ultra-Low Capacitance TVS Protection

Ultra-Low Capacitance TVS Protection

ZVS Flyback SR Controller

36V, Boost/Flyback/Sepic Controller

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.

Low Capacitance TVS Protection

Ultra-Low Capacitance TVS Protection

Low Capacitance TVS Protection