A comparative analysis of Switched-Capacitor and inductor-based DC-DC conversion technologies

Seeman, Michael D.; Ng, Vincent W.; Le, Hanh-Phuc; John, Mervin; Alon, Elad; Sanders, S.R.

doi:10.1109/compel.2010.5562407

Cited by 89 publications

(43 citation statements)

References 5 publications

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“…The power electronics designers have gone toward eliminating these disadvantages [1], [2], [6]. Accordingly, their efforts related to development of switched capacitor converters can be categorized in three regions as follows: 1) hybrid switched capacitor converters, 2) multilevel switched capacitor converter, and 3) resonant switched capacitor converter.…”

Section: Fig 1 Basic Switched-capacitor Converters [3]mentioning

confidence: 99%

“…Advantages of the basic SCCs as compared to the inductance converters are described as follows: 1) low volume and weight, 2) ability of on-board integration, 3) operation at low power range even under the no load condition without any dummy load, 4) inherent short circuit current limiting feature of this kinds of converters, 5) high power density, 6) low cost, due to no copper usage in the converter, and 7) high transient response due to using capacitor instead of inductance [2], [4], and [5]. The power electronics designers have gone toward eliminating these disadvantages [1], [2], [6].…”

Section: Fig 1 Basic Switched-capacitor Converters [3]mentioning

confidence: 99%

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Designing A 48 V to 24 V DC-DC converter for vehicle application using a resonant switched capacitor converter topology

Mousavi

Beiranvand

Goodarzi

et al. 2015

The 6th Power Electronics, Drive Systems &Amp; Technologies Conference (PEDSTC2015)

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Electromagnetic elements such as inductance are not used in switched-capacitor converters to convert electrical power. In contrast, capacitors are used for storing and transforming the electrical power in these new topologies. Lower volume, higher power density, and more integration ability are the most important features of these kinds of converters. In this paper, the most important switched-capacitor converters topologies, which have been developed in the last decade as new topologies in power electronics, are introduced, analyzed, and compared with each other, in brief. Finally, a 100 watt double phase half-mode resonant converter is simulated to convert 48V dc to 24 V dc for light weight electrical vehicle applications. Low output voltage ripple (0.4%), and soft switching for all power diodes and switches are achieved under the worst-case conditions.

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Section: Fig 1 Basic Switched-capacitor Converters [3]mentioning

confidence: 99%

Section: Fig 1 Basic Switched-capacitor Converters [3]mentioning

confidence: 99%

Designing A 48 V to 24 V DC-DC converter for vehicle application using a resonant switched capacitor converter topology

Mousavi

Beiranvand

Goodarzi

et al. 2015

The 6th Power Electronics, Drive Systems &Amp; Technologies Conference (PEDSTC2015)

View full text Add to dashboard Cite

show abstract

“…Application demands on area and volume are potentially most acute in mobile computing and communication devices where the size of the logic board is increasingly limited by power management components. Switched capacitor (SC) converters have shown promise for high power-density applications due to several factors, notably: 1) the relatively high energydensity of capacitors compared to inductors, especially at volumes below the mm 3 regime [2][3]; 2) beneficial deviceutilization figures of merit [1][2][3][4]; and 3) the ability to scale favorably in modern semiconductor processes [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

The direct-conversion resonant switched capacitor architecture with merged multiphase interleaving: Cost and performance comparison

Kesarwani

Stauth

2015

2015 IEEE Applied Power Electronics Conference and Exposition (APEC)

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Switched capacitor and resonant switched capacitor topologies have gained interest in recent years for highly integrated (monolithic) DC-DC converters, and more generally for a range of applications that require high density, high efficiency, and low cost. This work presents experimental and theoretical results for a new resonant topology that has architectural similarity to the more common 3-level buck converter. We further outline the prospects of using mergedinterleaving to reduce voltage ripple while maximizing the utilization of passive components. We present the results of an experimental prototype that can be configured as a switched capacitor, resonant switched capacitor, or resonant 3-level topology. Importantly, by constraining factors such as total cost of active and passive components, volumetric energy density, and other design factors, we attempt to provide a fair comparison of the respective converter prototypes for applications spanning DC power delivery, and power management for renewable energy applications such as photovoltaics and battery management.

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“…This special characteristic enables it to target at higher power density and full monolithic integration compared with traditional inductor-based converter [4]- [7]. However, it also brings the issues of narrowed regulation capability and pulsating input current [8]- [10].…”

Section: Introductionmentioning

confidence: 99%

Analysis of High-Power Switched-Capacitor Converter Regulation Based on Charge-Balance Transient-Calculation Method

Smedley

et al. 2016

IEEE Trans. Power Electron.

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Switched Capacitor (SC) Converters were initially introduced for low power applications and monolithic integration. In recent years, SC converter has found high power applications. However, voltage regulation remains an issue. This paper addresses regulation challenges for high power SC converters, based on Charge-balance Transient-calculation (CT) modeling method and peak current stress estimation. With the help of CT model, due to its accuracy and comprehensive relationship, circuit and control parameters' impacts on regulation become straightforward and concerns on components stresses can be addressed quantitatively. The suitability of CT method for regulation analysis is confirmed by comparison with traditional modeling methods. The CT method is used in a 1kW 3X Two-switch Boosting Switched-capacitor Converter (TBSC) circuit for steady state analysis and current stress estimation. The soft rising input current and nature interleaving properties of 3X TBSC make it well-suited for high power application. Finally, the small signal model of the 3X TBSC is developed and a closed loop operation is achieved under 1kW power rating.Index Terms-CT modeling, switched capacitor, voltage regulation, peak current stress, TBSC I. 0885-8993 (c)

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A comparative analysis of Switched-Capacitor and inductor-based DC-DC conversion technologies

Cited by 89 publications

References 5 publications

Designing A 48 V to 24 V DC-DC converter for vehicle application using a resonant switched capacitor converter topology

Designing A 48 V to 24 V DC-DC converter for vehicle application using a resonant switched capacitor converter topology

The direct-conversion resonant switched capacitor architecture with merged multiphase interleaving: Cost and performance comparison

Analysis of High-Power Switched-Capacitor Converter Regulation Based on Charge-Balance Transient-Calculation Method

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