Abstract

In this paper, a dimmable 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 can be 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.

© 2014 IEEE

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