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http://dx.doi.org/10.5370/KIEE.2017.66.10.1474

A New LED Current Balancing Scheme Using Double-Step-Down DC-DC Converter  

Kim, Kisu (School of Energy Engineering, Kyungpook National University)
Do, Duc Tuan (School of Energy Engineering, Kyungpook National University)
Kim, Heung-Geun (School of Energy Engineering, Kyungpook National University)
Cha, Honnyong (School of Energy Engineering, Kyungpook National University)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.66, no.10, 2017 , pp. 1474-1480 More about this Journal
Abstract
This paper presents a new LED current balancing scheme using double-step-down dc-dc converter. With the proposed structure, the two channel LED currents are automatically balanced without using any dedicated control or auxiliary circuit. In addition, switching loss of the switching devices in the proposed LED driver is lower than that of the conventional buck LED driver. To verify the operation of the proposed LED driver, a hardware prototype is built and tested with different number of LED.
Keywords
Capacitor; Current balancing; Current regulator; Double-step-down; LED driver;
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Times Cited By KSCI : 1  (Citation Analysis)
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