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Dissertations / Theses on the topic 'DC-DC buck'

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Published: 9 March 2023
Last updated: 10 March 2023

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1

Chadha, Ankit. "Tapped-Inductor Buck DC-DC Converter." Wright State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=wright1578488939749599.

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2

DI, LORENZO ROBERTO. "DC-DC Buck Converter For Automotive Applications." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2021. http://hdl.handle.net/10281/301996.

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L'avvento del MOSFET di potenza è uno degli sviluppi più significativi nell'elettronica di potenza negli ultimi anni. Mentre i dispositivi verticali apparsi alla fine degli anni settanta sembravano destinati a trovare un posto importante nel mercato, in particolare nell'area della conversione di potenza ad alta frequenza, il predominio generale del transistor bipolare di potenza non sembrava seriamente minacciato. Tuttavia, quando i dispositivi DMOS verticali più facilmente fabbricabili apparvero in volume nel 1978, la scena era pronta per una rivoluzione. Il MOSFET di potenza ha rapidamente r
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3

Querol, Borràs Jorge. "MCU Controlled DC-DC Buck/Boost Converter for Supercapacitors." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-101205.

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This work is focused on DC to DC conversion, what is a crucial function to enable the use of supercapacitors for energy storage. A theoretical study and comparison of methods, algorithms and techniques for software controlled DC-DC converters have been used to develop a system what can step up or down a DC variable voltage and transform it into a steady state voltage. As a result a new control theory based on Bang-Bang control has been developed with an ARM LPC1768 processor. It was implemented to solve the commercial converters problems because they cannot work with supercapacitors due to the
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4

Al, Kzair Christian. "SiC MOSFET function in DC-DC converter." Thesis, Uppsala universitet, Elektricitetslära, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-415147.

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This thesis evaluate the state of art ROHM SCT3080KR silicon carbide mosfet in a synchronous buck converter. The converter was using the ROHM P02SCT3040KR-EVK-001 evaluation board for driving the mosfets in a half bridge configuration. Evaluation of efficiency, waveforms, temperature and a theoretical comparison between a silicon mosfet (STW12N120K5) is done. For the efficiency test the converter operate at 200 V input voltage and 100 V output voltage at output currents of 7 A to 12 A, this operation was tested at switching frequencies of 50 kHz, 80 kHz and 100 kHz. The result of the efficienc
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5

Lau, Wai Keung. "Current-mode DC-DC buck converter with dynamic zero compensation /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?ECED%202006%20LAU.

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Mobaraz, Hiwa. "Modelling and Design of Digital DC-DC Converters." Thesis, Linköpings universitet, Institutionen för systemteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-127713.

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Digital Switched mode power supplies are nowadays popular enough to be the obvious choice in many applications. Among all set-up and control techniques, the current mode DC-DC converter is often considered when performance and stability are of interest. This has also motivated all the “on chip” and ASIC implementations seen on the market, where current mode control technique is used. However, the development of FPGAs has created an important alternative to ASICs and DSPs. The flexibility and integration possibility is two important advantages among others. In this thesis report, an FPGA-based
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Mai, Yuan Yen. "Current-mode DC-DC buck converter with current-voltage feedforward control /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?ECED%202006%20MAI.

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8

BOERA, FILIPPO. "High Frequency DC-DC Buck Converter for Automotive Post-Regulated Applications." Doctoral thesis, Università degli studi di Pavia, 2022. http://hdl.handle.net/11571/1452159.

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The current trends in the automotive market are pushing toward an ever increasing integration of electronic components in a car. Modern cars need to be safer and smarter, hence there is the need of a lot of sensors, radars, microcontrollers etc. Consequentially, the power supply circuits that are needed to power up all these devices starting from the 12-V battery of a car are also facing an intense thrust to integration. More integration of the power supply circuits means that the production costs and area of the components are significantly reduced, but leads to less flexibility of the circui
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Siu, Man. "Design of voltage-mode buck converter with end-point prediction /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202004%20SIU.

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10

Sikora, Roman. "DC-DC měnič pro matrix beam modul." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-413161.

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The master thesis deals with the development of buck-boost DC-DC converter which supplies matrix beam module. The design is focused on testing two-phase boost converter and three channel buck converter manufactured by NXP Semiconductors. Part of the design is implementation of microcontroller for converter control and communication with computer. Part of the thesis is also to design user interface on Windows platform for easy system configuration. Next thing the thesis deals with is designing load for DC-DC converter that is variable and can make different current consumption. One part of this
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11

Huang, Chien-Chung, and 黃建中. "BIPOLAR SYNCHRONOUS DC-DC BUCK CONVERTER DESIGN." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/97013166298125170114.

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碩士<br>大同大學<br>電機工程學系(所)<br>97<br>A DC-DC synchronous buck converter with soft start has been designed and simulated with 40V bipolar process. The overall circuit is designed based on a voltage-mode PWM controlled converter. The input voltage range is from +4.3V to +20V. Simulation results show that this converter with on-chip current sensor can operate at 200 kHz. The current limit is implemented by sensing the voltage drop across the bottom N-MOSFET RDS (ON). The soft start function is used to prevent large inrush currents upon power-up. The internal thermal protection circuit can protect the
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12

Liao, Hsiao-Yun, and 廖筱耘. "A Digital-Intensive DC-DC Buck Converter." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/32051473247626262572.

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碩士<br>國立暨南國際大學<br>電機工程學系<br>102<br>In recent years, integrated circuit process technology improved, circuit density increases, and circuit function powerful. The improving of process technology decreases the operation voltage of circuit. Meanwhile, the portable electronic products are popular today. So, low power consumption and high power efficiency are the primary consideration when designing portable electronic products. To increase the endurance of these portable electronic products, these circuits must operate in a low voltage and low current to reduce the power consumption. In this paper
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13

O, Enkhtuya, and 歐安塔. "Design of Buck-Boost DC-DC converters." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/f3y52u.

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碩士<br>國立勤益科技大學<br>電子工程系<br>105<br>DC-DC conversion would provide the correct power to the system needed. Many different varieties of voltage regulators with a variety of control schemes are used. DC-DC converters are some of the most widely used power electronics circuits for its conversion efficiency and flexible output voltage. In this thesis 3 common topologies that makes useful are the Buck, Boost, and the Buck Boost converters. These converters used for electronic devices are designed to regulate the output voltage against the changes of the input voltage and load current. The first conve
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14

Chan, Yan Shuo, and 詹彥碩. "Buck Dc-to-Dc Converter Design and Analysis." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/23392021489825330516.

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碩士<br>國立中正大學<br>機械系<br>92<br>Today, most industrial and homely load application are all dealing with the electric energy in power electronic systems and controling the flow of power to load.In the progress of technology, Microelectronics and Power Semiconductor technology are continuously improving in recent year. Power electronic systems design face to reduce size, cost, and enhanceperformance as optimum objective. Therefore the power electronic systems development have been respected progressively. DC mot
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15

Hsiao, Chi-Lung, and 蕭吉隆. "Design of Digital DC-DC Switching Buck Controller." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/30286803415906124205.

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碩士<br>國立交通大學<br>電機學院IC設計產業專班<br>96<br>In recent years, due to development of frivolous and small portable electronic products quickly, except use of the battery, a fixed-voltage and low-ripple voltage regulator in the power circuit design has already been the essential tendency. For a traditional analog voltage regulator, when the power circuit specification has been changed, it needs to redesign according to new parameters. For a digital voltage regulator, it is realized by the digital control modulation technique to promote the performance of the system circuit. This technique makes use of t
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16

Tsao, Jiun-Hau, and 曹浚豪. "HIGH FREQUENCY SYNCHRONOUS BUCK BOOST DC-DC CONVERTER." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/88723223904880136792.

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碩士<br>大同大學<br>電機工程學系(所)<br>100<br>In this thesis, we propose a non-inverting topology for buck-boost converter to extend the battery life of a portable device. Four power MOSFETS switches are used to improve the efficiency, and increase the operation frequency to 1MHz to minimize the inductance. The compensated error amplifier is composed of two blocks, unity-gain zero generation block and gain block, realizing phase shift and gain of the feedback loop, respectively. Therefore, it can reduce the capacitor value for circuit integration. The simulation results show that this buck-boost converte
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17

Yang, Chih-Wei, and 楊智偉. "Terminal Sliding Mode Control of DC-DC Buck Converter." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/40287493094885340856.

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碩士<br>中原大學<br>電機工程研究所<br>97<br>Sliding mode control is widely used in recent years to deal with the control problems of nonlinear systems. In this dissertation we applied terminal sliding mode control (TSMC) which is different from traditional sliding mode control on DC - DC buck converter design. It not only retains the advantages of sliding mode control but also includes terminal convergence characteristics. Furthermore, the system stability is discussed using Lyapunov function analysis. When considering the actual derivation error uncertainty in passive components, the controller is proceed
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18

Hsieh, Meng Ting, and 謝孟廷. "All Digital Controlled High Accuracy Buck DC-DC Converter." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/65275255834234271315.

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碩士<br>長庚大學<br>電機工程學系<br>100<br>This paper presents a fully digital control of DC-DC buck converter circuit. According to the relative relationship between the output voltage and reference voltage, the circuit will control power MOS’s duty cycle by means of DPWM’s signal to achieve the correct voltage. The buck converter has some advantages of high accuracy, low area, and high efficiency. This circuit is achieved by simulation and chip and then compare the results. This all-digital controller buck DC-DC converter is implemented in Taiwan Semiconductor Manufacturing Company (TSMC) 0.35μm CMOS pr
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19

Yu-Hui, Sung, and 宋玉惠. "Implementation of 8MHz Current-Mode Buck DC-DC Converter." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/17297645957351678156.

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碩士<br>國立交通大學<br>電機學院IC設計產業專班<br>95<br>This thesis proposes a new DC-DC switching converter with a high switching frequency for reducing the size of the output filter. Owing to the high switching frequency, the on-chip output filter in DC-DC switching converter is possible in the future. Thus, how to develop a DC-DC switching converter with high switching frequency is important in today’s technology. Therefore, a compact solution is needed to effectively reduce the footprint area of the power management module in system-on-chip (SoC) systems. Furthermore, a high performance power converter modu
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20

Lou, Chen-Chien, and 樓志堅. "Robust Performance Analysis for Multimodule Parallel DC-DC Buck." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/86531460554472984920.

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碩士<br>國立臺北科技大學<br>機電整合研究所<br>92<br>The objective of this thesis is to use the structured singular value in robust control theory to analyze the performance indices of multimodule DC-DC buck converters system. First, we adopt the energy conservation theorem to derive practical performance specifications used in power electronics, such as ripple, efficiency and output voltage level. Since the component values in modules of parallel system are usually different and then deteriorate the performance, according to the cases: (1) characteristics in each module are identical, (2) characteristics in ea
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21

Lee, Jia-Jyun, and 李家鈞. "On-Chip Compensation Techniques for DC-DC Buck Converters." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/34622714986258029243.

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碩士<br>國立交通大學<br>電機學院電機與控制學程<br>102<br>This work is discussing the comprehensive concepts of on-chip compensation (OCC) techniques for DC-DC buck converters with voltage mode control and current mode control. In general, the compensator network of DC-DC buck converter needs the external components for the large value capacitors to place the zeros in desired location to stabilize the system. Thus, the compensation of the regular DC-DC converter is completed by an off-chip compensator. Regarding DC-DC buck converter with voltage mode control, Type III compensator is usually employed to extend
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22

Cao, De-Wei, and 曹德偉. "Robust switching rule design for DC-DC buck converters." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/32342236339731900339.

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碩士<br>國立臺灣海洋大學<br>電機工程學系<br>103<br>For control of switched-mode power supplies, most of the approaches are using the state-space averaging method to obtain averaging models of the considered circuits and then designing feedback controllers based on the averaging models. In this thesis, by a different approach, a DC-DC buck converter is modeled as a switched system, and then a robust switching rule is designed to robustly stabilize the switched systems under possible parameter variations. By simulations and practical experiments it is shown that the obtained switching law is able to stabilize t
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23

Chou, Di-Chi, and 周帝吉. "Single-Inductor Dual-Output DC-DC Buck/Boost Converter." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/01129641559018482846.

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碩士<br>國立臺灣大學<br>電子工程學研究所<br>104<br>A Single-Inductor Dual-Output (SIDO) DC to DC Buck/Boost Converter topology is proposed. The power stage switching sequence is different from conventional type. In addition to three switches, a freewheel switch is used to prevent negative inductor current occurring and degrading the power efficiency. The converter uses ripple-based control method, which facilitates high switching frequency and decreasing the passive components volume. The chip is fabricated in 0.18 μm CMOS, the proposed SIDO DC-DC Buck/Boost Converter can produce 0.95 V buck voltage with
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Chen, Lien-Chieh, and 陳聯傑. "H∞ Control Design of PWM Buck DC-DC Converter." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/00619762453291005055.

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碩士<br>國立成功大學<br>系統及船舶機電工程學系碩博士班<br>93<br>Abstract An H∞-Control design of the Pulse Width Modulator (PWM) switch buck DC-DC converter is studied in this thesis. The AC small-signal mathematical model for the PWM switch buck DC-DC converter is derived in this research and the state space equation of a topological circuit through a DC perturbation operating point is then established and linearized around the operating point. The composite model to be controlled is then composed of a AC small-signal model , a PWM transfer function and a switch transfer function. To minimize the ill-effects of
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Chueh, Yung-Fa, and 闕永發. "Beat Frequency Influence Analysis for DC-DC Buck Converters." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/rdq7x9.

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碩士<br>國立臺灣科技大學<br>電子工程系<br>105<br>In this thesis, the effect of beat frequency on DC-DC buck converters is discussed by using Simplis simulation software. This study covers the effect of the beat frequency on the single-phase voltage mode and peak current mode and the two-phase dual-loop control mode. The advantages and disadvantages of these two control modes and how these two control modes deal with the loading with beat frequency are also covered. In the simulation, the behaviors of output voltage and current under beat frequency is discussed. In the simulation with the two-phase the DC buc
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YANG, SHANG-TA, and 楊尚達. "DC-DC Buck Converter with Constant On-Time Control." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/536978.

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碩士<br>國立臺北科技大學<br>電機工程系電力電子產業碩士專班<br>107<br>This thesis mainly implements a constant on-time controlled buck converter, which uses FPGA controller to regulate the output voltage, and works in a setting frequency range. One of the advantages of the constant on-time control method is that when the load transient, it can quickly respond to rising output voltage to avoid the voltage drop too deep. The MLCC can be used on the output terminal with this method, and keep the output voltage stable, has better efficiency even in the light load. The specification of the implemented constant on-time buck
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27

Chen, Shih-Wei, and 陳世偉. "Single-Inductor Tri-Output DC-DC Boost Converter and Dual-Output Quadratic DC-DC Buck Converter." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/uy3282.

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碩士<br>國立臺北科技大學<br>電腦與通訊研究所<br>97<br>There are two kinds of DC-DC converters presented in this study. One is the single-inductor tri-output (SITO) DC-DC boost converter, and the other one is the dual-output quadratic (DOQ) DC-DC buck converter. The proposed SITO DC-DC boost converter not only provides three output sources but also uses single inductor. The proposed DOQ DC-DC buck converter has a wider conversion ratio with ultra-low voltage for dual-output voltage sources. In this study, the methodology for controller design of DOQ DC-DC buck converter is given using average current-mode contro
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28

Hsieh, Wei-Lun, and 謝維倫. "High Switching DC-DC Buck Converters in Current Domain Control." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/33140296337803936596.

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碩士<br>國立交通大學<br>電機與控制工程系所<br>97<br>For portable electronic device applications, high performance and compact size voltage regulator plays an important role to provide system power. To reduce the size of output filter, a high switching dc-dc buck converter is presented to achieve high integration. However, the conventional current mode DC-DC buck converter is not suitable to high switching design because the sub-circuits, which uses operational amplifier, restrict the bandwidth. That is to say, the limitation of circuit bandwidth causes incorrect operation and can not follow the system switchin
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29

Fan, Jia-Wei, and 范家維. "Design of Robust PD Controller for DC-DC Buck Converters." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/80592284996593687279.

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碩士<br>國立臺北科技大學<br>自動化科技研究所<br>91<br>The objective of this thesis is to investigate the design of robust PD controller for the uncertain DC- DC buck converter, provided the transient and steady responses meet the specifications while the component parameters vary. At first, the concept of the state-space averaging method is adopted to establish the small signal model of the open-loop converter, and transfer functions of the PWM modulator and feedback voltage-sampling network are derived accordingly. When the PD controller is introduced in the loop, using Kharitonov theorem
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Chung, Shiao-Chin, and 鍾曉春. "T-S Fuzzy Chaotic Control for Buck DC-DC Converters." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/ryge4e.

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碩士<br>國立臺北科技大學<br>電機工程系研究所<br>101<br>This thesis mainly investigates the bifurcation and chaos suppression of buck DC-DC converters by using the Takagi-Sugeno (T-S) fuzzy controller. Firstly, a nonlinear converter is represented in the form of T-S fuzzy system and then controller gain matrices can be obtained by solving the linear matrix inequalities (LMI). Moreover, this study uses the MATLAB/SIMULINK software to simulate and observe, in the presence of variations of input voltage and load resistances, the output voltage characteristic, inductance current and the corresponding phase plane wh
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31

Shiau, Jung-yi, and 蕭仲義. "Sliding mode voltage control of DC/DC buck-boost converter." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/99441053412284159291.

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碩士<br>正修科技大學<br>機電工程研究所<br>97<br>Comparing with the conventional power converters, switching power converters possess the advantages of high efficiency, small size and wide range of voltage operation, so that they are widely applied in the application of portable electronic products and equipment in recent years. This thesis mainly focuses on the development and implementation of Buck/Boost converter with a sliding mode voltage controller, to achieve the stable desired controlled voltage output. Firstly, the stable sliding surface function is designed due to the control system. It can be obser
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Chen, Chien-cheng, and 陳建成. "A High Efficiency Current Mode Control DC-DC Buck Converter." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/07494232505610402844.

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碩士<br>國立中央大學<br>電機工程研究所<br>99<br>In this changing rapidly era of electronic technology, the major demands of portable electronics are short, thin, and full functionalities. These sub-circuits of the portable electronics, which use batteries for power sources, need a stable supply voltage generating by power converters. These power converters must have low power consumption and high efficiency to extend the service time of portable electronics. Thus, a high efficiency current mode buck converter is presented in this thesis. The proposed buck converter uses current-mode controlling mechanism to
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Πετρίδης, Κωνσταντίνος. "Ανάλυση και έλεγχος boost και buck boost dc-dc μετατροπέων". Thesis, 2013. http://hdl.handle.net/10889/6419.

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Στην παρούσα διπλωματική εργασία περιγράφεται η εφαρμογή μη γραμμικών μεθόδων ελέγχου στους Boost και Buck Boost DC-DC μετατροπείς που χρησιμοποιούν την τεχνική PWM. Συγκεκριμένα αναφερόμαστε στην μέθοδο ελέγχου βασισμένη σε παθητική σχεδίαση (PBC) καθώς και στην βασισμένη σε παθητική σχεδίαση μέθοδο ορισμού εσωτερικής ζεύξης και απόζευξης (IDA-PBC) και παρουσιάζουμε τα αποτελέσματα των εξομοιώσεων μέσω του προγράμματος Matlab-Simulink. Τέλος παρουσιάζεται ένας νέος μη γραμμικός-δυναμικός ελεγκτής, ικανός να διαμορφώσει την τάση εξόδου ανεξάρτητα από τον τύπο του φορτίου για τον DC-DC boost με
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Chang, Chun-Ping, and 張俊評. "Improving the Efficiency of the Synchronous BUCK DC-DC Converter." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/41454281480277023397.

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碩士<br>逢甲大學<br>電子工程所<br>94<br>In recent years, because the green energy concept is taken gradually, the key of power transformation efficiency gradually extends from the heavy to light load condition. In various types by the battery in the product as an electric power source, for example: Portable type product, the electric car as well as detached solar energy system and so on, the standby time (light load operation) is usually longer than use time (heavy load operates). Therefore, creating a high transformation efficiency to extend the standby time becomes a topic for study and discussion. Thi
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Chiu, Min-Chun, and 邱閔駿. "Design of CMOS DC-DC Buck Converter with Protection Capability." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/51866157385692987115.

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碩士<br>國立勤益科技大學<br>電子工程系<br>101<br>Due to convenient operation and friendly user interface, portable electronic products are more popular today. For high efficiency, it is the most important consideration to achieve safety power conversion unit in portable electronic products. In addition, the semiconductor technologies are improved continuously. As a result, more functions can be integrated into a single chip and these electronic products have more functions within a small volume and with light weight. However, power supply units of circuits are needed to supply more various voltage levels to
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36

Chin-HongChen and 陳津宏. "Average-Current-Mode Non-inverting Buck-Boost DC-DC Converter." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/77890091296649204660.

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碩士<br>國立成功大學<br>電機工程學系碩博士班<br>98<br>With the increasing use of electrical portable devices, an efficient power management solution is needed to extend battery life. Generally, basic switching regulators (e.g., buck, boost) are not capable of using the entire battery output characteristics effectively (e.g., 2.7–4.2 V for Li-ion) to provide a fixed output voltage (e.g., 3.3V). In this work, an average-current-mode non-inverting buck-boost dc-dc converter is introduced, which can use the full-range output voltage of Li-ion battery with the advantages of high power efficiency, faster transient r
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Yu, Tsung-ta, and 游宗達. "Analysis and Design of Four Phase DC/DC Buck Conventer." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/42080621197588413956.

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碩士<br>大同大學<br>電機工程學系(所)<br>96<br>The Voltage Regulator Module (VRM) concept was developed by Intel to guide the design of dc-dc converters that supply the required voltage and current to a Pentium® microprocessor. The maximum voltage is determined by the five-bit VID (Voltage Identity) code provided to the VRM. The five-bit, five-pin VID code connects the power supply controller to the corresponding pins on the microprocessor. Therefore, the internal coding in the microprocessor controls the dc voltage applied to processor. VRM guidelines are intended for a special module, usually a small circ
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楊文魁. "Sliding Mode Control Design of Switching Buck DC-DC Converters." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/23680105019427113826.

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碩士<br>國立中興大學<br>電機工程學系<br>90<br>Abstract This thesis develops modified PID(proportional-integral-derivative)-like sliding mode controllers for single buck DC-DC converter and paralleled buck DC-DC converters. The single buck DC-DC converters can be modeled as linear averaged systems with changeable loads, noise and parameter perturbations of uncertain load. Two models with different chosen state variables are employed to design the sliding mode controllers for buck DC-DC converters; the first one has two state variables of VO and iC and the second one three state variables of VO, iC
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"Digitally Controlled DC-DC Buck Converters with Lossless Current Sensing." Doctoral diss., 2011. http://hdl.handle.net/2286/R.I.14398.

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abstract: Current sensing ability is one of the most desirable features of contemporary current or voltage mode controlled DC-DC converters. Current sensing can be used for over load protection, multi-stage converter load balancing, current-mode control, multi-phase converter current-sharing, load independent control, power efficiency improvement etc. There are handful existing approaches for current sensing such as external resistor sensing, triode mode current mirroring, observer sensing, Hall-Effect sensors, transformers, DC Resistance (DCR) sensing, Gm-C filter sensing etc. However, each m
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Wu, Kun You, and 吳坤祐. "Sliding-Mode Control Applied to Buck DC-DC Converter Design." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/90185981336242031257.

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碩士<br>國立交通大學<br>電機學院碩士在職專班電機與控制組<br>95<br>A sliding mode controller with the error integration between output voltage and command voltage for PWM-based Buck DC-DC converter is proposed. Constant switching frequency can be achieved with the proposed approach. For the controller design, this thesis adopts sliding mode control theorem because of its well-know robustness for system uncertainty. Without load estimator in the controller, this closed-loop system ideally should convert power flow into the prescribed form in spite of the load variation. With the unknown load condition we choose a slidi
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LAI, YANG-YUN, and 賴暘允. "Counter-Based Digital Pulsewidth Modulator For DC-DC Buck Converter." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/bz8e9k.

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碩士<br>國立暨南國際大學<br>電機工程學系<br>106<br>In today's DC-DC buck converter is widely used in a variety of electronic circuits, and I designed the DC buck converter is the use of digital control, and the use of digital pulse width modulator to modulate the voltage. This paper presents a counter-based digital pulse width modulator with high resolution and low hardware costs. The digital DC buck converter in this thesis is composed of the basic structure of the buck converter and digital pulse width modulator. I implemented the digital pulse width modulator in the FPGA development board and integrated it
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Sabbarapu, Bharath Kumar. "DC-DC power converters with multiple outputs." Thesis, 2016. http://hdl.handle.net/1805/10998.

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Indiana University-Purdue University Indianapolis (IUPUI)<br>This study presents a novel converter configuration that is related to the area DC-DC power converters. To begin with, a brief introduction is given by stating the importance of power electronics. Different types of converters, their operating principles and several new topologies that are being proposed over the years, to suit a particular application with specific advantages are listed in detail. In addition, pro- cedure for performing small signal analysis, which is one among the several averaging techniques is summarized in the f
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Hsu, Hsin-Ju, and 許昕茹. "Automatic Layout Synthesis Tool for DC-DC Current-Mode Buck Converter." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/64617872141924593723.

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碩士<br>國立中央大學<br>電機工程學系<br>105<br>In our days, lots of electronic product are made of analog/mixed-signal (AMS) intergrated circuits (ICs), such as portable devices, medical equipment, communication product and automobile electronics etc. Nowadays, with the growing demands for portable devices, Time-to-Market cycle still keeps shrinking. Electronic design automation (EDA) tools are the keys to speed up the device process. There are many existing EDA tools for digital circuits on the market. However, the EDA tools for AMS circuits are still not popular. Because analog circuits are often sensitiv
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Tzeng, Jun-Jie, and 曾俊傑. "A Voltage Mode DC-DC Buck Converter with Duty Cycle Detector." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/7e7u5q.

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碩士<br>國立中央大學<br>電機工程學系<br>103<br>The proposed buck converter with duty cycle detector uses the voltage mode control as the feedback loop for system stability. The PID compensator integrated into the chip to reduce the number of passive components. It is good to portable electronic devices design thinness and lightweight. With duty cycle detector, proposed buck converter can detect the load current information to slow down the system operating frequency for reducing power consumption in very light load. The zero current detector prevents the inverse current, and reduces the conduction loss in l
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Ho, Chun-Hsien, and 何俊賢. "Design and Analysis of Digital Control for Buck DC/DC Converters." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/97399156457452699002.

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碩士<br>國立臺灣大學<br>電機工程學研究所<br>94<br>The thesis focuses on the feasibility of realizing a digital controller for a DC-DC switching Buck converter, and discusses what should be taken into account while designing such a controller and the problems that may be encountered. The prevalent primary structure of a digital controller consists of three block, A/D converter, digital PID compensator, and the DPWM(Digital Pulse-Width-Modulated). In the thesis one Buck converter hardware with a variable input voltage range 5~12V, output voltage 2V, output current varied from 2A to 2.5A had been carried out and
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Lee, Te-Lun, and 李德崙. "A Study on the Dynamics of DC-DC Buck-Boost Converters." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/96824682581146433543.

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碩士<br>中原大學<br>電機工程研究所<br>86<br>This thesis proposes a new way we offer to study the dynamics of the dc-dc buck-boost converters operating respectively in the continuous-conduction mode (CCM) and the discontinuous-conduction mode (DCM) by deriving the precise solutions and the accurate formulas. In the meantime, the computer simulations and the circuit experiments are given to confirm the theoretical results. The chief results of our work are as follows: (1) Using a very simple way, we can obtain the precise solutions to the dc-dc buck-boost converters operating individually in CCM and DCM. (2)
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Lian, Bo-Sheng, and 連柏勝. "Design of CMOS DC-DC Buck Converter with Dual Filtering Inductors." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/26602816816547867804.

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碩士<br>國立勤益科技大學<br>電子工程系<br>101<br>This thesis proposes a novel DC-DC buck converter with dual filtering inductors to reduce the converter power consumption when the converter is operated at light loading. The converter operates in discontinuous conduction mode. Pulse frequency modulation is used as a control mechanism. Based on the loading status, this circuit will automatically switch to select the desired inductor. Comparison with single filter inductor DC-DC buck converter, the converter can effectively reduce power conduction loss. In addition, a block of dead time buffer is designed as th
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Chin-WeiChang and 張晉瑋. "Single-Inductor Four-Switch Voltage-Mode Buck-Boost DC-DC Converter." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/73162145114489630707.

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碩士<br>國立成功大學<br>電機工程學系碩博士班<br>98<br>With the rapid progress of semiconductor technology, all kinds of electronic products, especially portable electronics, appear in the market day by day. The most indispensable component for portable products is the battery that supplies energy, and determines the service life of the product. The supply voltage of the battery will drop gradually with time, which means the input voltage supplying by battery can be higher than, equal to, or lower than the desired voltage. Therefore, a DC-DC converter is required to convert the time-varying battery voltage to a
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Kuo, Chung-wei, and 郭忠韋. "DESIGN AND IMPLEMENTATION OF A 16 PHASE DC/DC BUCK CONVERTER." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/45639020549716818024.

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碩士<br>大同大學<br>電機工程學系(所)<br>98<br>ABSTRACT As the power consumption of microprocessors increase, a multi-phase voltage regulator is required to meet the power hunger and high efficiency requirements. In this thesis, in order to design and implementation of a 16 phase DC/DC buck converter, phase extender is applied on the power module of CPU on the motherboard. In general, the higher the phase number count, the more PWM outputs are required for the PWM controller. Consequently, developing a multi-phase PWM controller becomes very challenging and requires a high pin count package, resulting in
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50

Zheng, Li-Ren, and 鄭力仁. "Design and Implementation of a Bidirectional Buck-Boost DC-DC Converter." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/41810993725827533220.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>103<br>In this thesis, a digitally-controlled non-isolated bidirectional buck– boost dc–dc converter is studied and implemented. The proposed converter is capable of operating in all power conditions in buck/boost modes. Through a novel modulation strategy and proper design of the buck-boost inductance, zero voltage switching (ZVS) can be achieved and thus high efficiency can be obtained. To further improve the efficiency, an adaptive phase-shift control method which determines the phase shift between gating signals according to the load level is also proposced. A lo
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