Compact equivalent circuit model for the skin effect

Kim, S.; Neikirk, Dean P.

doi:10.1109/mwsym.1996.512297

Cited by 174 publications

(71 citation statements)

References 6 publications

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“…Therefore, at light loads, the efficiency of the converter significantly drops and may fall below an acceptable range. Area scaling methods to improve the efficiency at light loads are proposed in [4] and [10]. Modern integrated circuits, such as microprocessors or chipsets, exhibit high dynamic range of the load current ranging from 50 mA to 1.5 A. Optimization for light loads is therefore critical.…”

Section: Optimization For Light Loadmentioning

confidence: 99%

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Efficiency optimization of integrated DC-DC buck converters

Sizikov

Kolodny

Fridman

et al. 2010

2010 17th IEEE International Conference on Electronics, Circuits and Systems

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-An analytic method to evaluate frequency dependent losses in on-chip DC-DC buck converters is presented in this paper. Microprocessors or chipsets exhibit wide dynamic range of load current varying from 50mA up to 1.5 A per phase at full operation. Peak efficiency is shown to occur when the load current related losses and the inherent losses of the DC-DC converter are equal. Efficiency optimization methods are described for light and heavy load scenarios. The primary design objective is to maintain the load at the peak of the efficiency curve. A SPICE based circuit model of a DC-DC converter is applied to validate the proposed analytic methods.

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Section: Optimization For Light Loadmentioning

confidence: 99%

“…The area scaling parameter r is the ratio of the active bridge width to the total width. The optimal width for a given load current can be derived from [10] and decreases linearly with smaller load currents. Area scaling is performed by disabling portions of the power stage.…”

Section: Optimization For Light Loadmentioning

confidence: 99%

Efficiency optimization of integrated DC-DC buck converters

Sizikov

Kolodny

Fridman

et al. 2010

2010 17th IEEE International Conference on Electronics, Circuits and Systems

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“…Boosted by the availability of increasingly powerful circuit simulators, the modeling of electromagnetic structures using equivalentcircuit approaches is a current topic of interest, in particular, when dealing with skin effect problems [3][4][5][6][7][8]. One novelty with this work, which also deals with problems related to skin effect [9,10], resides in the consideration of inhomogeneous materials, which can display predominant conducting properties, insulation properties, magnetic properties, or a mix of all.…”

Section: Introductionmentioning

confidence: 99%

A Circuit Approach for the Electromagnetic Analysis of Inhomogeneous Cylindrical Structures

Faria¹

2011

PIER B

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Abstract-An equivalent circuit, made of the chain connection of a number of T-type two-port networks, is proposed for the very accurate representation of the frequency-domain behavior of radially inhomogeneous solitary cylindrical structures, the individual two-port networks being made of frequency-independent R, L and C lumped elements. The accuracy of the model is dictated by the number of two-port networks, a number that increases with the frequency. The equivalent circuit approach is validated with the help of an application example concerning a special type of inhomogeneous tubular structures where exact closed-form field solutions do exist.

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“…Several other models try to find frequency independent lumped-element circuits to replace the original frequency dependent elements. Among these models are the volume filament model [5], compact circuit models [6], and the reduced decoupled R-L model [7]. For example, Figure 1 shows the volume filament model and its equivalent circuit.…”

Section: Introductionmentioning

confidence: 99%

“…To copy otherwise, to republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. ICCAD'06, November [5][6][7][8][9]2006 Most of the previous work assumes that using the 3D model leads to significant changes in the circuit performance when the operating frequency is high enough such that the skin depth starts to be comparable to the interconnect cross section dimensions. In such cases, the interconnect effective cross section area becomes less than that of the geometrical cross section as shown in Figure 2.…”

Section: Introductionmentioning

confidence: 99%

Importance of Volume Discretization of Single and Coupled Interconnects

Shebaita

Petranovic

Ismail

2006

2006 IEEE/ACM International Conference on Computer Aided Design

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This paper presents figures of merit and error formulae to determine which interconnects require volume discretization in the GHZ range. Most of the previous work focused mainly on efficient modeling of volume discretized interconnects using several integration and reduction techniques. However, little work has been done to characterize when using the simple DC model has an impact on critical circuit metrics such as delay, impedance …etc. Most of the previous work simply assumes that when skin depth becomes smaller than the wire cross section dimensions, volume discretization becomes essential. However, careful analysis in this paper shows that this assumption is invalid and a figure of merit is derived to characterize when volume discretization of single and coupled wires is required. This derived figure of merit is shown to depend solely on the interconnect dimensions and spacing and is independent of the type of the materials used or technology scaling.

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Compact equivalent circuit model for the skin effect

Cited by 174 publications

References 6 publications

Efficiency optimization of integrated DC-DC buck converters

Efficiency optimization of integrated DC-DC buck converters

A Circuit Approach for the Electromagnetic Analysis of Inhomogeneous Cylindrical Structures

Importance of Volume Discretization of Single and Coupled Interconnects

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