Analysis of the buck converter for scaling the supply voltage of digital circuits

Trescastro-López, Eva María; Castro, Ángel de; Alou, P.; Cobos, J.A.; Uceda, J.; Lotfi, A.

doi:10.1109/apec.2003.1179292

Cited by 38 publications

(35 citation statements)

References 6 publications

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“…The control commands a lengthy on-time and then a lengthy off-time to reach steady-state without overshooting. These transients are very similar to the transient response of the digital Minimum time control [1], [2] which is the fastest that can be done to reach the steady-state. This shows that the controls are truly optimized which gives more value to the comparison.…”

Section: Discussionsupporting

confidence: 54%

“…In the case of digital controls, the Minimum Time control [1], [2] and the Centric-based control [3] can achieve the best possible dynamic response, although tolerances of the converter and parasitic elements limit their performance in real-world applications. Novel digital controls should be compared to them or to the benchmark limits derived from the Natural Trajectories [4] that the Centric-based control uses.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of the behavior of voltage mode, V2 and V2I<inf>c</inf> control of a buck converter for a very fast and robust dynamic response

Cortés

Šviković

Alou

et al. 2014

2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014

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Abstract-This paper proposes an optimization method to design the parameters of controls for power converters in order to achieve a very fast dynamic response while remaining stable and robust over the desired operation region. The proposed optimization algorithm is applied to different analog controls and is used to compare the dynamic response of the Voltage mode, V 2 and V 2 I C control for different cases in order to evaluate which control presents the best performance in terms of dynamic response and stability robustness to system tolerances.

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Section: Discussionsupporting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Comparison of the behavior of voltage mode, V2 and V2I<inf>c</inf> control of a buck converter for a very fast and robust dynamic response

Cortés

Šviković

Alou

et al. 2014

2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014

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show abstract

“…In [28] this multilevel converter is used for ET and it supplies a linear PA. Voltage changes are performed by changing the duty cycle between the needed values. On the other hand, in [29] the voltage changes are performed in the theoretically minimal time, using the Pontryagin's minimum principle [30]. The minimum time transition is very well known technique for a single buck converter.…”

Section: Number Of Levelsmentioning

confidence: 99%

Survey of architectures and optimizations for wide bandwidth envelope amplifier

Vasić

García

Oliver

et al. 2012

2012 15th International Power Electronics and Motion Control Conference (EPE/PEMC)

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-In the last years, RF power amplifiers are taking advantage of the switched dc-dc converters to use them in several architectures that may improve the efficiency of the amplifier, keeping a good linearity. The use of linearization techniques such as Envelope Elimination and Restoration (EER) and Envelope Tracking (ET) requires a very fast dc-dc power converter to provide variable voltage supply to the power amplifier but theoretically the efficiency can be much higher than using the classical amplifiers belonging to classes A, B or AB. The purpose of this paper is to analyze the state of the art of the power converters used as envelope amplifiers in this application. The power topologies will be explored and several important parameters such as efficiency, bandwidth will be discussed.

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“…The principle of Minimum Time Control (MTC) is explained in [6][7]. In order to simply the problem, the buck converter is considered as linear system.…”

Section: A Minimum Time Control Methodology Applied To Multiphase Bumentioning

confidence: 99%

Design of envelope amplifier based on interleaved multiphase buck converter with minimum time control for RF application

Cheng

Vasić

García

et al. 2011

2011 IEEE Energy Conversion Congress and Exposition

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Abstract-In this paper, an interleaved multiphase buck converter with minimum time control strategy for envelope amplifiers in high efficiency RF power amplifiers is proposed. The solution for the envelope amplifier is to combine the proposed converter with a linear regulator in series. High efficiency of envelope amplifier can be obtained through modulating the supply voltage of the linear regulator. Instead of tracking the envelope, the buck converter has discrete output voltage that corresponding to particular duty cycles which achieve total ripple cancellation. The transient model for minimum time control is explained, and the calculation of transient times that are pre-calculated and inserted into a lookup table is presented. The filter design trade-off that limits capability of envelope modulation is also discussed. The experimental results verify the fast voltage transient obtained with a 4-phase buck prototype.

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Analysis of the buck converter for scaling the supply voltage of digital circuits

Cited by 38 publications

References 6 publications

Comparison of the behavior of voltage mode, V<sup>2</sup> and V<sup>2</sup>I<inf>c</inf> control of a buck converter for a very fast and robust dynamic response

Comparison of the behavior of voltage mode, V<sup>2</sup> and V<sup>2</sup>I<inf>c</inf> control of a buck converter for a very fast and robust dynamic response

Survey of architectures and optimizations for wide bandwidth envelope amplifier

Design of envelope amplifier based on interleaved multiphase buck converter with minimum time control for RF application

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