Resonant boost switched capacitor converter with high efficiency
Resonant boost switched capacitor converter with high efficiency
复制标题
高效率谐振升压开关电容转换器
DOI：
10.1109/pesc.2005.1581901
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
T. Ninomiya
中科院分区：
文献类型：
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作者：
M. Shoyama;F. Deriha;T. Ninomiya
传统的开关电容转换器具有固有的缺点，即它们的效率随着输出电流的增加而大大降低。这种固有的缺点是由于内部开关电容器中的周期性强制充电和放电操作伴随着大的电容器电流，使得它们的效率不能通过降低其内阻来提高。结果，传统的开关电容器转换器被限制为与非常小的输出电流一起使用。为了解决这个问题，我们提出了一些新的开关电容变换器拓扑结构，使用谐振操作，而不是强制充电和放电操作。与传统的开关电容转换器相比，它们的优点是即使在高输出电流区域也具有高效率。本文对一种双升压型开关电容变换器进行了详细的工作分析和稳态特性分析，并通过实验加以验证。
Conventional switched capacitor converters have an inherent drawback that their efficiency is much decreased as the output current is increased. This inherent drawback is due to a periodical forced charging and discharging operation in the internal switched capacitors accompanied by a large capacitor current, so that their efficiency can not be increased by decreasing its internal resistance. As a result, conventional switched capacitor converters have been limited to be used with a very small output current. To solve this problem we presented some novel switched capacitor converter topologies that use a resonant operation instead of the forced charging and discharging operation. Their advantage over conventional switched capacitor converters is a high efficiency even in a high output current region. In this paper, the operation analysis and steady-state characteristics are described in detail for a double boost type switched capacitor converter, and they are confirmed by experiments.