Single-Switch High-Frequency DC–DC Converter Using Parasitic Components

Chung, Euihoon; Lee, Kyunghwan; Han, Yongsu; Ha, Jung‐Ik

doi:10.1109/tpel.2016.2582831

Cited by 26 publications

(16 citation statements)

References 34 publications

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“…The sampling period T s tends to zero as the switching frequency of the DC-DC converter increases. Thus, the coordinate of the pole (or zero) approaches the unit circle in the z-plane, as expressed in (8), and the stability of the z-domain discrete system degrades with the rise in the switching frequency. Furthermore, as both the zeros and the poles tend to (1, 0) with the increase in the switching frequency, their sensitivities to the control coefficients also increase.…”

Section: Stability Of the Z-domain Transfer Function At High Switchinmentioning

confidence: 99%

“…The increase in the switching frequency of a DC-DC switching converter not only improves its transient response features with load variation, but also significantly reduces the sizes and weights of the passive filtering components, including inductors and capacitors. These power supply module improvements are particularly beneficial for portable and mobile consumer electronics [7][8][9][10][11]. Consequently, high-frequency digitally controlled (HFD) DC-DC switching converters attract considerable attention from both the academia and industry [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…The switching frequencies of analogue-control DC-DC switching converters have exceeded several tens of megahertz [7][8][9][10]. However, the switching frequencies of digitally controlled DC-DC switching converters have only increased from hundreds of kilohertz [1,11,12] to several megahertz [13][14][15], because of two special issues that exist at high frequencies: maintaining the stability and the accuracy of the feedback control system and reducing the hardware cost.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Digital controller based on delta operator for high‐frequency DC–DC switching converters

Chen

Wei

Shang

et al. 2018

IET Power Electronics

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Both the stability and the control accuracy of digital controllers for DC-DC switching converters utilising shift operators severely degrade under high switching frequencies. This study presents a digital-proportion integration differentiation (D-PID) controller based on a delta operator for DC-DC converters with high switching frequencies. Both the stability and the control accuracy of the digitally controlled converters were effectively improved when using the delta operator instead of the shift operator. The hardware cost and the processing speed requirements were also considerably reduced. The performance advantages of such a D-PID controller were theoretically analysed, and then simulated using the Simulink platform. Finally, both the proposed D-PID controller and a conventional shift operator-based controller were implemented for DC-DC switching converters on a field-programmable gate array (FPGA) platform. The benefits of using the delta operator over the shift operator were experimentally verified, and the test results indicated that for the DC-DC switching converter with 2 MHz switching frequency, better control accuracy can be obtained by using the delta operator than using the shift operator.

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Section: Stability Of the Z-domain Transfer Function At High Switchinmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Digital controller based on delta operator for high‐frequency DC–DC switching converters

Chen

Wei

Shang

et al. 2018

IET Power Electronics

View full text Add to dashboard Cite

show abstract

“…With the continuous improvement of the working frequency, the VHF converters can effectively reduce the value and volume of passive components and increase the power density [77]- [82]. In the future, the integrated VHF converters will become the development trend of the VHF converters.…”

Section: Opportunities and Challenges Of Vhf Power Convertersmentioning

confidence: 99%

Topologies and Control Strategies of Very High Frequency Converters: A Survey

Guan

Wang

et al. 2017

CPSS TPEA

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Abstract-with the fast development of power electronics, very high frequency (VHF) power converters (30-300 MHz) gradually become research focus, which can greatly reduce the value, volume of passive components and help to improve the system power density. However, at such high operating frequency, many challenges have been proposed, such as switching characteristics, topologies characteristics and control methods. This paper starts from the development background of VHF power converters, and an overview of VHF development is described. Different topologies adopted in VHF condition are introduced and compared. At the same time, the resonant driving strategies and control methods for very high frequency converters are discussed and analyzed, which can provide guidance for further research of VHF converters.

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“…Recently, except for LLC resonant converter, considerable research has been focused on isolated resonant converter for highefficiency DC/DC conversion [27][28][29][30][31][32]. A majority of the proposed converters are actually multi-element resonant converters, such as LCL resonant converter [27] and LCC resonant converter [28], which utilise the parasitic parameter of the switch, diode, transformer and even printed circuit board (PCB) layer.…”

Section: Introductionmentioning

confidence: 99%

MHz zero‐voltage‐switched isolated resonant converter for wide‐output‐voltage application

Jin

2017

IET Power Electronics

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This study proposes a MHz isolated resonant converter, which achieves buck-boost DC/DC conversion, zero-voltage switching and the resonant components absorb the parasitic parameters. The DC analysis method and MATLAB computational algorithm are proposed for acquiring the specific circuit characteristics, including the voltage conversion ratio, the rms value of switch current and peak voltage of the semiconductors. The active power and apparent power are also analysed to provide design basis of optimising efficiency. The proposed converter shows greater advantages on voltage stress, current stress and efficiency over traditional isolated Sepic multi-resonant converter. A wide-output-voltage prototype based on the proposed converter was built in the lab and the experimental results verify the theoretical analysis well.

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Single-Switch High-Frequency DC–DC Converter Using Parasitic Components

Cited by 26 publications

References 34 publications

Digital controller based on delta operator for high‐frequency DC–DC switching converters

Digital controller based on delta operator for high‐frequency DC–DC switching converters

Topologies and Control Strategies of Very High Frequency Converters: A Survey

MHz zero‐voltage‐switched isolated resonant converter for wide‐output‐voltage application

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