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Unified Control of a Buck Converter for Wide-Load-Range Applications

Christoph H. van der Broeck, Rik W. De Doncker, Sebastian A. Richter, Jochen Von Bloh
2015 IEEE transactions on industry applications  
A simple proportional-integral regulator is used for the voltage control of the converter.  ...  A new discrete-time state feedback controller is presented, which allows high-bandwidth voltage control of a buck converter for any load condition, whether it operates in discontinuous conduction mode  ...  It provides a unified high-performance voltage control in DCM and CCM with a smooth transition between both operation modes.  ... 
doi:10.1109/tia.2015.2431994 fatcat:v3irf4juezferm5fo6yz4t3lce

Unified control of a buck converter for wide load range applications

Christoph H. van der Broeck, Rik W. De Doncker, Sebastian A. Richter, Jochen von Bloh
2014 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014  
A simple proportional-integral regulator is used for the voltage control of the converter.  ...  A new discrete-time state feedback controller is presented, which allows high-bandwidth voltage control of a buck converter for any load condition, whether it operates in discontinuous conduction mode  ...  It provides a unified high-performance voltage control in DCM and CCM with a smooth transition between both operation modes.  ... 
doi:10.1109/apec.2014.6803699 fatcat:ukuotovawff7phjqadi2mpbjyq

A family of ZVS-PWM active-clamping DC-to-DC converters: synthesis, analysis, design, and experimentation

C.M.C. Duarte, I. Barbi
1997 IEEE Transactions on Circuits and Systems I Fundamental Theory and Applications  
This paper presents a technique to generate a complete family of two-switch pulsewidth-modulated (PWM) with active clamping dc/dc converters, featuring soft commutation of the semiconductors at zero-voltage  ...  All the converters have the advantage of soft commutation (ZVS) with minimum switch voltage stress due to the clamping action.  ...  (a) Clamped mode ZVS-PWM forward converter (boost). (b) Clamped mode ZVS-PWM Buck converter (boost). (c) The ZVS-PWM commutation cell (boost) taken from the buck converter.  ... 
doi:10.1109/81.611265 fatcat:25c5ypb5qraqpnwt4w4ei2xltu

Digital Control For Power Management Systems

Bekemans Marc, Acconci Terence, Van Humbeeck Thierry, Van Esbeen Alain, A. Fernandez
2017 E3S Web of Conferences  
In this example, the output voltage of two Buck DC/DCs, connected in parallel, is controlled via a digital regulation.  ...  An example of a pure digital algorithm (the predictive programmed current control) will also be presented. In a second step, a practical application of a digital control will be considered.  ...  With a digital system, any point of the current sequence can be sampled. This can be done by synchronizing the sampling time with the PWM sequence.  ... 
doi:10.1051/e3sconf/20171618010 fatcat:b76lxnvgzncytdlw2enojyk7ia

A Monolithic Buck Converter With Near-Optimum Reference Tracking Response Using Adaptive-Output-Feedback

Patrick Y. Wu, Philip K. T. Mok
2007 IEEE Journal of Solid-State Circuits  
Index Terms-Dynamic voltage scaling, end-point prediction, output-ripple-based control, reference tracking, V 2 -control.  ...  Fixed-switching-frequency V 2 -control is used in steady-state operation; while its speed limitation during reference tracking is eliminated by employing end-point prediction, a novel oscillator with clock-holding  ...  Hence, we simply add a reference feed-forward path to the PWM comparator as shown in Fig. 2 for end-point prediction.  ... 
doi:10.1109/jssc.2007.907169 fatcat:fq7ewvjdf5g5vpzt7e7e2myjze

Digital Charge Balance Controller to Improve the Loading/Unloading Transient Response of Buck Converters

Eric Meyer, Zhiliang Zhang, Yan-Fei Liu
2012 IEEE transactions on power electronics  
A linear/nonlinear digital controller is presented that allows a Buck converter to recover from a load transient event with near-optimal voltage deviation and recovery time.  ...  Furthermore, the proposed controller can be extended to applications that require load-line regulation.  ...  Following the recovery from the load transient, the controller will return to its linear voltage-mode operation. B. With Load-Line Regulation Load-line regulation (a.k.a.  ... 
doi:10.1109/tpel.2011.2106164 fatcat:w2g6jy4iazeotjyq6nkik7liga

An Improved Hysteresis Voltage Mode of Synchronous Rectifier Buck Circuit

Ziqian Shen, Shun Zhong
2020 IEEE Access  
The output voltage performance of the Buck circuit with proposed hysteresis voltage mode is compared with the same circuit with typical hysteresis voltage mode.  ...  To achieve high power and high efficiency over a wide load range, an improved hybrid hysteresis voltage mode for Buck circuit is proposed in this paper.  ...  [13] presented a monolithic voltage-mode DC-DC Buck converter with advanced burst mode (ABM) and pulse-width modulation (PWM) to achieve high frequency and high efficiency over a wide load range.  ... 
doi:10.1109/access.2020.3006809 fatcat:osf3jdvhwzd7nhh524n2gobnqe

Efficiency Optimization in Burst-Mode Buck DC/DC Converters for Sensor Nodes

Ferran Reverter, Chris Glaser, Manel Gasulla
2018 IEEE Sensors Journal  
In such a context, this paper optimizes the power efficiency of buck dc/dc converters when operating in burst mode, which is preferable than the conventional pulse-width modulation technique in lowpower  ...  Experimental tests with a commercial buck dc/dc converter (TPS62750) show that the use of this optimal inductor current provides up to 9% increase in efficiency, thus prolonging the operating lifetime  ...  A similar situation occurs when a buck converter regulating the input voltage is compared with a boost converter regulating the output voltage.  ... 
doi:10.1109/jsen.2018.2854359 fatcat:sgzc2oqiybcx3ahpcrgowle7hm

Comparative Studies of Common Control Schemes for Reference Tracking and Application of End-point Prediction

Ying Wu, Philip K. T. Mok
2007 2007 IEEE Custom Integrated Circuits Conference  
A novel V 2 -controlled Buck converter with EPP is fabricated. The measured reference tracking response shows 10 times improvement in speed.  ...  Loop gains applicable to reference tracking are highlighted, and reference-to-output transfer functions are derived for the cases when end-point prediction (EPP) is applied to enhance the response.  ...  Principle of end-point prediction (EPP) [3] is reexamined and appropriately applied to a V 2 -controlled Buck converter.  ... 
doi:10.1109/cicc.2007.4405794 dblp:conf/cicc/WuM07 fatcat:vag7hmy2rvgwjpysf362ep5g7m

STABILITY ANALYSIS OF DC-DC BUCK CONVERTERS

Ahmed M. Alturas, Abdulmajed O. Elbkosh, Othman Imrayed
2020 Acta Electronica Malaysia  
This paper is focusing on the stability analysis of the voltage mode control buck converter controlled by pulse-width modulation (PWM).  ...  A complete design-oriented approach for studying the stability of dc-dc power converters and its bifurcation has been introduced.  ...  Figure 1 shows a graphical illustration of the buck converter under the PWM voltage mode.  ... 
doi:10.26480/aem.01.2020.01.06 fatcat:i5mlcnovpfboxlrjcfv4eo3d4q

Need for Variable Frequency Control in DC-DC Switching Converters–Challenges and Opportunities using Digital Implementation

Santanu Kapat
2018 Proceedings of the Indian National Science Academy  
In the context of fixed-frequency pulse-width modulation (PWM), a multi-loop current-mode control (CMC) scheme offers improved bandwidth and superior line regulation compared to a single-loop voltage-mode  ...  A compensating ramp eventually degrades the closed-loop bandwidth, and a further increase in the ramp slope would tend to approach VMC; thus the benefits of CMC are lost with an increasing duty-ratio.  ...  Figure 2 (A) shows a synchronous buck converter operating under a PWM voltage-mode control (VMC) scheme, and the related control waveforms are shown in Fig. 3 .  ... 
doi:10.16943/ptinsa/2018/49334 fatcat:bswi5n4axvhijcil7djyqwt2jq

A DSPIC implementation of a sliding mode strategy for a SEPIC converter

Arivukkannu Ezhilarasi, Muthiah Ramaswamy
2009 Serbian Journal of Electrical Engineering  
This paper attempts to implement an elegant Variable Structure Controller (VSC), with a view to regulate the output voltage and improve the power quality of input current of a Single-Ended Primary Inductance  ...  Converter (SEPIC) through the use of a DSPIC processor.  ...  A dc voltage of 350 V obtained through a front end rectifier is applied to the buck/boost converter.  ... 
doi:10.2298/sjee0902215e fatcat:xasvxdgd2rh53jpnw2ar7gdawa

Sliding-Mode Control of DC-DC Switching Converters

L. Martinez-Salamero, A. Cid-Pastor, A. El Aroudi, R. Giral, J. Calvente, G. Ruiz-Magaz
2011 IFAC Proceedings Volumes  
The method of the equivalent control is illustrated in the design of a cascade control for the voltage regulation of a non-minimum phase converter.  ...  The sliding-mode control of DC-DC switching converters is presented in contrast to the traditional pulse width modulation approach.  ...  Fig. 6 . 6 Sliding-mode control of a boost converter with a compensating network for voltage regulation.  ... 
doi:10.3182/20110828-6-it-1002.00557 fatcat:w75yncgns5ffnkfvrkdeu7oo2e

Development of a Digitally Controlled Inductive Power Transfer System with Post-Regulation for Variable Load Demand

Kateryna Stoyka, Antonio Vitale, Massimo Costarella, Alfonso Avella, Mario Pucciarelli, Paolo Visconti
2021 Electronics  
A digital control of the post-regulator is implemented by means of a commercial low-cost microcontroller enabling the output voltage regulation under both fixed and variable load conditions through a voltage  ...  Finally, an excellent output voltage regulation is ascertained for load transients between 5 Ω and 24 Ω, with limited over- and undershoot amplitudes (less than 3% of the nominal output voltage), thus  ...  To this end, we exploit the findings of [27] which used Coupled-Mode Theory (CMT) to deal with the dynamic modeling of the IPTS pre-regulated by a buck converter.  ... 
doi:10.3390/electronics11010058 fatcat:cowxu4c27vgx5aequcx5l3nrnm

A V2G Integrated Battery Charger based on an Open End Winding Multilevel Configuration

Salvatore Foti, Antonio Testa, Giacomo Scelba, Salvatore De Caro, Luigi Danilo Tornello
2020 IEEE Open Journal of Industry Applications  
In fact, a single converter is tasked to deal at a time either with the PF control on the ac side, either with control of the voltage and current on the dc side.  ...  Moreover, bidirectional energy flows are made possible by exploiting bidirectional buck-boost converters and PWM rectifiers. The dcdc stage is generally realized around a bridge converter.  ...  In G2V mode the system works as a PFC, cyclically switching from a Buck-like configuration (|Vg|>VDC ' /2) to a Boost-like one (|Vg|<VDC ' /2), as shown in Fig. 8 .  ... 
doi:10.1109/ojia.2020.3035851 fatcat:ydwbkksrx5guxjp73zywvi24pq
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