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Stacked switched capacitor energy buffer circuit

机译:堆叠式开关电容器能量缓冲电路

摘要

A stacked switched capacitor (SSC) energy buffer circuit includes a switching network and a plurality of energy storage capacitors. The switching network need operate at only a relatively low switching frequency and can take advantage of soft charging of the energy storage capacitors to reduce loss. Thus, efficiency of the SSC energy buffer circuit can be extremely high compared with the efficiency of other energy buffer circuits. Since circuits utilizing the SSC energy buffer architecture need not utilize electrolytic capacitors, circuits utilizing the SSC energy buffer architecture overcome limitations of energy buffers utilizing electrolytic capacitors. Circuits utilizing the SSC energy buffer architecture (without electrolytic capacitors) can achieve an effective energy density characteristic comparable to energy buffers utilizing electrolytic capacitors. The SSC energy buffer architecture exhibits losses that scale with the amount of energy buffered, such that a relatively high efficiency can be achieved across a desired operating range.
机译:堆叠式开关电容器(SSC)能量缓冲电路包括开关网络和多个能量存储电容器。开关网络仅需要在相对较低的开关频率下工作,并且可以利用储能电容器的软充电来减少损耗。因此,与其他能量缓冲电路的效率相比,SSC能量缓冲电路的效率可以非常高。由于利用SSC能量缓冲器架构的电路不需要利用电解电容器,因此利用SSC能量缓冲器架构的电路克服了利用电解电容器的能量缓冲器的局限性。使用SSC能量缓冲器架构(不带电解电容器)的电路可以实现与使用电解电容器的能量缓冲器相当的有效能量密度特性。 SSC能量缓冲架构显示出的损失与缓冲的能量成比例,因此可以在所需的工作范围内实现相对较高的效率。

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