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http://dx.doi.org/10.6113/JPE.2015.15.4.861

A Wide Frequency Range LLC Resonant Controller IC with a Phase-Domain Resonance Deviation Prevention Circuit for LED Backlight Units  

Park, YoungJun (College of Information and Communication Engineering, Sungkyunkwan University)
Kim, Hongjin (College of Information and Communication Engineering, Sungkyunkwan University)
Chun, Joo-Young (College of Information and Communication Engineering, Sungkyunkwan University)
Lee, JooYoung (College of Information and Communication Engineering, Sungkyunkwan University)
Pu, YoungGun (College of Information and Communication Engineering, Sungkyunkwan University)
Lee, Kang-Yoon (College of Information and Communication Engineering, Sungkyunkwan University)
Publication Information
Journal of Power Electronics / v.15, no.4, 2015 , pp. 861-875 More about this Journal
Abstract
This paper presents a wide frequency range LLC resonant controller IC for LED backlight units. In this paper a new phase-domain resonance deviation prevention circuit (RDPC), which covers a wide frequency and input voltage range, is proposed. In addition, a wide range gate clock generator and an automatic dead time generator are proposed. The chip is fabricated using 0.35 μm BCD technology. The die size is 2 x 2 mm2. The frequency of the clock generator ranges from 38 kHz to 400 kHz, and the dead time ranges from 300 ns to 2 μs. The current consumption of the LLC resonant controller IC is 4 mA for a 100 kHz operation frequency using a supply voltage of 15 V.
Keywords
Backlight unit; Clock generator; Dead time; LED driver; LLC resonant controller; Prevention Circuit (RDPC); Resonance Deviation; Wide range;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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