Resonant switched-capacitor voltage regulator with ideal transient response

Cervera, Alon; Peretz, Mor Mordechai

doi:10.1109/apec.2014.6803409

Cited by 11 publications

(3 citation statements)

References 22 publications

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“…Consider the circuit in Figure 1 where fl col(V, 1 ) and fl 2 is an auxiliary variable. Using 7, we define the input power as in (14). After some straightforward computations we obtain…”

Section: Energy-based Analysismentioning

confidence: 99%

“…Moreover, these topologies exhibit also high current peaks due to sudden parallel interconnection of capacitances, demanding high stress on semiconductor devices. For this reason, the use of small inductances that limit such currents is a common alternative (see [12][13][14][15][16]). The justification for the use of such limiting current inductors is mainly based on their size and cost, since resonant inductors are not required to store a significant amount of energy as in other traditional topologies.…”

Section: Introductionmentioning

confidence: 99%

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Storage and Dissipation Limits in Resonant Switched-Capacitor Converters

Mayo-Maldonado

Maupong

Valdez-Reséndiz

et al. 2018

Mathematical Problems in Engineering

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The purpose of this manuscript is twofold, first we introduce an energy-based modeling framework for the analysis of resonant switched-capacitor (SC) converters and second we demonstrate that energy storage and dissipation in resonant SC with ideal switches are bounded by a fundamental physical limit that, up until now, has been only associated with the special case of pure SC topologies. For instance, we show that the maximum energy stored in the small size inductors in resonant SC converters is equal to the energy that would be dissipated by their purely SC counterpart. The presented analysis permits the computation of resonant inductances in terms of maximum current peak values, which is experimentally validated. Furthermore, we introduce a relative loss factor that permits determining the efficiency of a design for a general case in the presence of parasitic resistances. These results corroborate that migrating to resonant SC technologies is one of the most compelling alternatives to overcome well-known disadvantages in pure SC topologies.

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“…Consider the circuit in Figure 1 where fl col(V, 1 ) and fl 2 is an auxiliary variable. Using 7, we define the input power as in (14). After some straightforward computations we obtain…”

Section: Energy-based Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Storage and Dissipation Limits in Resonant Switched-Capacitor Converters

Mayo-Maldonado

Maupong

Valdez-Reséndiz

et al. 2018

Mathematical Problems in Engineering

View full text Add to dashboard Cite

show abstract

“…Another approach to regulate the conversion ratio is to introduce an inductive element [8][9][10][11]. Having inductive element allows circulation of the charge within the converter [12][13][14][15][16]. However introduction of inductive element, defeats the whole purpose of miniaturisation, since inductors integration still poses a challenge in the IC production.…”

Section: Introductionmentioning

confidence: 99%

Modelling, simulation and experimental investigation of a new two input, series‐parallel switched capacitor converter

Abraham

Jose

Mathew

et al. 2017

IET Power Electronics

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A new series-parallel switched capacitor converter topology capable of operating off two independent input sources and generating target output voltage in buck or boost mode is presented. Operation principle, conversion ratios, modelling considerations in different operation modes and extensive loss analysis are derived. The converter is robust and may be operated off one or two input sources, having the ability to change conversion ratio over a wide range. The proposed model assumes that the conduction losses are proportional to the average current flowing through each of the charge pump capacitor in a switching phase. Capacitor current instantaneous waveform in the complete charge, partial charge and no charge modes are captured in simulation and experiment. Model predicted equivalent resistance, output voltage and instantaneous capacitor current waveform concur excellent with simulated and experimental values, rendering the new converter as an excellent candidate for two and single input source applications.

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