scholarly journals Modified zero‐voltage‐switching single‐stage LED driver based on Class E converter with constant frequency control method

2018 ◽  
Vol 11 (12) ◽  
pp. 2010-2018 ◽  
Author(s):  
Shu Zhang ◽  
Xiaosheng Liu ◽  
Yueshi Guan ◽  
Yousu Yao ◽  
Jose Marcos Alonso
Keyword(s):  
Control Method ◽  
Frequency Control ◽  
Single Stage ◽  
Led Driver ◽  
Constant Frequency ◽  
Zero Voltage Switching ◽  
Zero Voltage ◽  
Voltage Switching ◽  
Class E

scholarly journals Single-Stage Coupled-Inductor Sepic-Type HB-LED Driver with Soft Switching for Universal Line Input

2012 ◽  
Vol 2012 ◽  
pp. 1-17 ◽  
Author(s):  
Chih-Lung Shen ◽  
Kuo-Kuang Chen
Keyword(s):  
Theoretical Analysis ◽  
Soft Switching ◽  
Single Stage ◽  
Led Driver ◽  
High Brightness ◽  
Zero Voltage Switching ◽  
Lower Volume ◽  
Mathematical Derivation ◽  
Zero Voltage ◽  
Voltage Switching

This paper proposes a single-stage Sepic-type high brightness LED driver for universal line input to perform power factor correcting and LED dimming. In the driver, a coupled inductor is introduced to replace with two separate inductors to lower volume and cost. A soft-switching cell is embedded into the driver to obtain zero-voltage switching (ZVS) feature so as to furthermore improve driver efficiency. Mathematical derivation and detailed discussion is presented. A prototype is designed, analyzed and implemented, which demonstrates the feasibility of the driver and verifies the theoretical analysis.

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