| Title |
A Study on High Efficiency Boost DC-DC Converter of Discontinuous Current Mode Control |
| Authors |
곽동걸(Kwak Dong-Kurl) ; 김춘삼(Kim Choon-Sam) |
| Keywords |
Boost Converter ; Discontinuous Current Mode ; Soft Switching ; Loss-Less Snubber Circuit |
| Abstract |
This paper studies a novel boost DC-DC converter operated high efficiency for discontinuous current mode (DCM) control. The converter worked in DCM eliminates the complicated circuit control requirement, reduces a number of components, and reduces the used reactive components size. In the general DCM converter, the switching devices are turned-on the zero current switching (ZCS), and the switching devices must be switched-off at a maximum reactor current. To achieve the zero voltage switching (ZVS) at the switching turn-off, the proposed converter is constructed by using a new loss-less snubber circuit. Soft-switched operation of the proposed boost converter is verified by digital simulation and experimental results. A new boost converter achieves the soft-switching for all switching devices without increasing their voltage and current stresses. The result is that the switching loss is very low and the efficiency of boost DC-DC converter is high. |