High Conversion Ratio DC–DC Converters With Reduced Switch Stress
High Conversion Ratio DC–DC Converters With Reduced Switch Stress
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DOI：
10.1109/tcsi.2008.918195
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发表时间：
2008-02
期刊：
影响因子：
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通讯作者：
E. Ismail;M. A. Al-Saffar;A. Sabzali
中科院分区：
文献类型：
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作者：
E. Ismail;M. A. Al-Saffar;A. Sabzali
本文提出了一类新的单开关非隔离高压升压DC-DC变换器，其拓扑结构简单。所提出的拓扑结构利用混合开关电容器技术来提供高电压增益而没有极端的开关占空比，并且还使得能够使用较低电压和RDS-ON MOSFET开关，从而降低成本、开关导通和导通损耗。所提出的拓扑的其他优点包括：连续的输入/输出电流，简单的结构和控制。分析了连续导通模式和电感电流断续模式下的工作原理。在一个45-W的原型上获得的实验结果也被提出。
In this paper, a new class of single-switch nonisolated high step-up DC-DC converters with simple topologies is proposed. The proposed topologies utilize a hybrid switched capacitor technique for providing a high voltage gain without extreme switch duty cycle and yet enabling the use of a lower voltage and RDS-ON MOSFET switch so as to reduce cost, switch conduction and turn-on losses. Other advantages of the proposed topologies include: continuous input/output current, simple structure and control. The principle of operation in continuous conduction mode and discontinuous inductor current mode are analyzed. Experimental results obtained on a 45-W prototype are also presented.