Title :
A LED current balancing driver with magnetizing inductance energy recycling considered
Author :
Hwu, K.I. ; Tu, W.C. ; Hong, Ming-Jie
Author_Institution :
Dept. of Electr. Eng., Nat. Taipei Univ. of Technol., Taipei, Taiwan
Abstract :
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.
Keywords :
driver circuits; light emitting diodes; power convertors; power transformers; recycling; LED current balancing driver; Zeta-type converter; current balancing transformer; energy-transferring capacitor; magnetizing inductance energy recycling; Capacitors; Demagnetization; Inductance; Light emitting diodes; Lighting; Magnetic tunneling; Resistors;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2012 Twenty-Seventh Annual IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4577-1215-9
Electronic_ISBN :
978-1-4577-1214-2
DOI :
10.1109/APEC.2012.6165937
