A buck-type LED driver together with automatic current sharing and high step-down voltage conversion ratio but without complex control is proposed. The proposed can not only achieve zero switching (ZVS) turn-on by adding one resonant coupled inductor, which resonates parasitic capacitors of active switches, also obtain lower gain better efficiency. In this paper, the operating principles design...

Abstract When the output of explosion-proof lithium power supply is used in parallel, there exists problem non-uniform current between sources, so a digital current-sharing strategy and module are designed. The uses MCU unit as regulating component to monitor front-stage post-stage voltage, their feedback values circuit real time. At same time, compensation exchanged through real-time communica...