A Dimmable LED Driver Based on Current Balancing Transformer With Magnetizing Energy Recycling Considered

Author

Hwu, K.I. ; Tu, W.C. ; Hong, M.J.

Author_Institution

Dept. of Electr. Eng., Nat. Taipei Univ. of Technol., Taipei, Taiwan

Volume

10

Issue

5

fYear

2014

fDate

May-14

Firstpage

388

Lastpage

395

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.

Keywords

current transformers; driver circuits; light emitting diodes; power convertors; Zeta type converter; current balancing transformer; dimmable LED current balancing driver; energy-transferring capacitor; magnetizing inductance energy recycling; Capacitors; Demagnetization; Equations; Inductance; Light emitting diodes; Logic gates; Switches; Current balancing transformer; Zeta converter; dimmable LED driver; magnetizing energy recycling;

fLanguage

English

Journal_Title

Display Technology, Journal of

Publisher

ieee

ISSN

1551-319X

Type

jour

DOI

10.1109/JDT.2014.2301883

Filename

6718010