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首页> 外文期刊>IEEE Journal of Solid-State Circuits >A Hybrid Structure Dual-Path Step-Down Converter With 96.2% Peak Efficiency Using 250-m $Omega$ Large-DCR Inductor
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A Hybrid Structure Dual-Path Step-Down Converter With 96.2% Peak Efficiency Using 250-m $Omega$ Large-DCR Inductor

机译：一个混合结构双路降压转换器，使用250-m $ oomega $ 大DCR电感器

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摘要

A dual-path step-down converter (DPDC) is presented for achieving high power efficiency in the mobile power management ICs (PMICs). Adopting a hybrid structure using one inductor and one flying capacitor, the proposed DPDC supplies a load current via two parallel paths, relieved an intrinsic problem of the conventional buck converter (CBC) topology, which is a significant power loss from a large DCR of the inductor (R-DCR). Therefore, DPDC achieves a high power efficiency and thus also reduces the heating problem, which is another critical issue in the mobile set. Moreover, DPDC can shrink the volume of the PMIC set with a low manufacturing cost by alleviating an R-DCR specification of the inductor. In this paper, although a 250 m Omega of large R-DCR inductor is used for our measurements, a 96.2% of peak efficiency was achieved and the power loss of total parasitic resistances can be reduced to up to 30% of that of CBC. Moreover, according to our measurement plots, it is verified that DPDC achieves the efficiency notably higher not only in a wide load current (I-LOAD) range but also in a wide conversion ratio (V-OUT/V-IN) range, compared to CBC.
机译：提出了一种双路径降压转换器（DPDC），用于在移动电源管理IC（PMIC）中实现高功率效率。采用一种使用一个电感器和一个飞行电容器的混合结构，所提出的DPDC通过两个平行路径提供负载电流，减轻了传统降压转换器（CBC）拓扑的内在问题，这是来自大型DCR的显着功率损失电感器（R-DCR）。因此，DPDC实现了高功率效率，因此还降低了加热问题，这是移动集中的另一个关键问题。此外，DPDC可以通过减轻电感器的R-DCR规范来缩小制造成本低的PMIC集的体积。在本文中，尽管使用了250米的大型R-DCR电感器进行了测量，但实现了96.2％的峰值效率，并且总寄生电阻的功率损失可降低至CBC的高达30％。此外，根据我们的测量图，验证DPDC不仅在宽负载电流（I负载）范围内，而且还以宽的转换比（V-OUT / V-IN）范围而达到效率到CBC。

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