A LED current balancing driver with magnetizing inductance energy recycling considered

In this paper, a LED current balancing driver is presented, which is based on the current balancing transformer with magnetizing inductance energy recycling considered. Such a driver has the main power stage constructed by one Zeta-type converter. Hence, the energy stored in the magnetizing inductance is released to the energy-transferring capacitor, thereby causing energy recycling to be achieved. In this paper, a detailed illustration of the basic operating principles of the proposed LED driver is first given, and finally some experimental results are provided to demonstrate its effectiveness.