A multi-path switched-capacitor-inductor hybrid DC-DC converter with reduced inductor loss and extended voltage conversion range
A multi-path switched-capacitor-inductor hybrid DC-DC converter with reduced inductor loss and extended voltage conversion range
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一种减少电感损耗和扩展电压转换范围的多路开关电容电感混合DC-DC变换器
DOI：
10.1587/elex.18.20210405
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
R. Martins
中科院分区：
文献类型：
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作者：
Qiaobo Ma;Xiongjie Zhang;Yang Jiang;Katsuhiro Hata;M. Takamiya;M. Law;Pui;R. Martins
提出了一种采用多路开关电容电感（MPSCI）拓扑结构的混合DC-DC变换器。在开关电容支路的辅助下，该变换器具有扩大电压变换范围、降低电感功率损耗的特点，从而提高了变换效率。该转换器采用180 nm CMOS工艺实现，在800 kHz的开关频率下，使用4.7μH电感（DCR = 240 m Ω），可从5 V输入总线电压调节1.8~ 3.3 V的输出电压。当输出电流为1A时，其峰值转换效率为93.7%。在3A的最大负载下，该设计仍然达到高达85.8%的效率。此外，在现有的双路径和传统的降压拓扑结构相比，所提出的转换器实现了电感器损耗减少高达3.3和5.4倍，分别在最大负载条件。关键词：电压
This work proposes a hybrid DC-DC converter using a multi-path switched-capacitor-inductor (MPSCI) topology. Assisted by switched-capacitor branches, it features voltage-conversion range extension and inductor power loss reduction, and hence improving the conversion efficiency. Implemented in a 180-nm CMOS process, the proposed converter can regulate an output voltage of 1.8~3.3V from a 5-V input bus voltage using a 4.7μH inductor (DCR = 240mΩ) at a switching frequency of 800 kHz. It achieves a peak conversion efficiency of 93.7% when delivering an output current of 1A. Under a maximum loading of 3A, this design still attains an efficiency of up to 85.8%. Furthermore, in contrast to the existing dual-path and conventional buck topologies, the proposed converter realizes an inductor loss reduction up to 3.3 and 5.4 times, respectively, at the maximum loading conditions. words: voltage
始终双路径混合 DC-DC 转换器以约 2:1 的降压比实现高效率
DOI：
--
发表时间：
2021
期刊：
影响因子：
--
作者：
Katsuhiro Hata;Yang Jiang;Man-Kay Law;Makoto Takamiya
通讯作者：
Makoto Takamiya