Capacitive Transposed Series-Parallel Topology With Fine Tuning Capabilities
Capacitive Transposed Series-Parallel Topology With Fine Tuning Capabilities
复制标题
具有微调功能的电容式转置串并联拓扑
DOI：
10.1109/tcsi.2010.2055277
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
S. Singer
中科院分区：
文献类型：
--
作者：
Y. Beck;S. Singer
本文提出并分析了开关电容变换器的一般转置串并联拓扑结构。该拓扑结构由传统的串并联矩形矩阵拓扑结构发展到由不同大小的电容器串构成的部分任意矩阵拓扑结构，再发展到基于一组等值电容器的任意矩阵拓扑结构。理论上，这些拓扑结构具有大量的dc/dc电压比，从而能够实现非常精确的固定dc/dc电压比。当需要电压调节时，这些拓扑结构还具有“微调”的能力。对于一般的转置串并联拓扑，结果表明，随着每个电容器作为配分函数的和的增加，可能的dc/dc电压转移比的数量呈指数级增长。因此，相对较少的组件需要一个假设的准确电压比。考虑了电容值中参数的色散。讨论了小纹波分析、损耗计算和效率考虑。对2.2和2.25电压比进行了仿真。模拟结果与理论计算结果吻合较好。
A general transposed series-parallel topology of a switched-capacitor converter is presented and analyzed in this paper. This topology evolved from the conventional series-parallel through rectangular matrices based topologies to partial arbitrary matrices which are constructed of different size strings of capacitors to arbitrary matrices, based on a bank of equally valued capacitors. Theoretically, these topologies have a large number of dc/dc voltage ratios, which lead to the capability to achieve very accurate fixed dc/dc voltage ratios. These topologies also have the capability for “fine tuning” when voltage regulation is necessary. For the general transposed series-parallel topology, it is shown that the number of possible dc/dc voltage transfer ratios escalates exponentially with an addition of each capacitor as the sum of partition functions. Therefore, relatively fewer components are required for an assumed accurate voltage ratio. Dispersion of parameters in the capacitance value is considered. Small ripple analysis, losses calculations and efficiency considerations are also discussed. Simulations are performed for 2.2 and 2.25 voltage ratios. The simulations are in good agreement with the theoretical calculations.