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http://dx.doi.org/10.6113/JPE.2014.14.4.621

Lossless Snubber with Minimum Voltage Stress for Continuous Current Mode Tapped-Inductor Boost Converters for High Step-up Applications  

Kang, Jeong-Il (Research & Development Office, Visual Display, Samsung Electronics Co., Ltd.)
Han, Sang-Kyoo (School of Electrical Engineering, College of EECS, Kookmin University)
Han, Jonghee (Research & Development Office, Visual Display, Samsung Electronics Co., Ltd.)
Publication Information
Journal of Power Electronics / v.14, no.4, 2014 , pp. 621-631 More about this Journal
Abstract
To invigorate the tapped-inductor boost (TIB) topology in emerging high step-up applications for off-grid products, a lossless snubber consisting of two capacitors and three diodes is proposed. Since the switch voltage stress is minimized in the proposed circuit, it is allowed to use a device with a lower cost, higher efficiency, and higher availability. Moreover, since the leakage inductance is fully utilized, no effort to minimize it is required. This allows for a highly productive and cost-effective design of the tapped-inductor. The proposed circuit also shows a high step-up ratio and provides relaxation of the switching loss and diode reverse-recovery. In this paper, the operation is analyzed in detail, the steady-state equation is derived, and the design considerations are discussed. Some experimental results are provided to confirm the validity of the proposed circuit.
Keywords
Current control; DC-DC power conversion; Efficiency; Snubber circuit;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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