Analysis and Design of a Double-Output Series-Resonant DC–DC Converter

Lo, Yu‐Kang; Yen, Shang-Chin; Song, Tzu-Herng

doi:10.1109/tpel.2007.897119

Cited by 16 publications

(9 citation statements)

References 19 publications

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“…From Equation (31), min is a downward parabolic function of k 1 . Also it can be proved that when k 1 is limited in the range from 0 to 1, D opt and min are both one-to-one functions of k 1 .…”

Section: Determination Of the Feedback Gainsmentioning

confidence: 99%

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Design of a two‐output forward converter with an output voltage objective function

Chen

Song

et al. 2011

Circuit Theory & Apps

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SUMMARYA new method is proposed in this paper to distribute the steady-state output voltage errors in a two-output forward converter. The cross regulation between the two output voltages are described in terms of the circuit parameters. An objective function is formed for each of the two outputs to track its reference within the specified error. The legitimate duty cycle range is located through the transfer characteristics between the duty cycle and the load currents. The weighting feedback gains of the two output voltages can be determined by the presented control scheme which optimizes the objective function. The proposed method is suitable for a two-output system without a dominant load. Experiments on a prototype are conducted to show that there exist a duty cycle range and a set of weighted feedback gains minimizing the defined objective function.

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Section: Determination Of the Feedback Gainsmentioning

confidence: 99%

“…Multiple-output DC-to-DC converters are widely used in the power supply industries [1][2][3][4][5]. The forward-type converters are most popular for their simple and cost-effective circuit topology [6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Design of a two‐output forward converter with an output voltage objective function

Chen

Song

et al. 2011

Circuit Theory & Apps

Self Cite

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“…In previous research for multiple output converters, cross regulation methods have been popular, since they require output voltage sensors to obtain the output voltage regulation. However, wide load variations between the multiple output channels induce large output voltage error [2][3][4][5][6][7]. The secondary side post regulators (SSPR) have been proposed to tightly regulate the output voltage with small output voltage error.…”

Section: Introductionmentioning

confidence: 99%

Design Methodology of Tightly Regulated Dual-Output LLC Resonant Converter Using PFM-APWM Hybrid Control Method

Park

Kim

et al. 2019

Energies

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A dual-output LLC resonant converter using pulse frequency modulation (PFM) and asymmetrical pulse width modulation (APWM) can achieve tight output voltage regulation, high power density, and high cost-effectiveness. However, an improper resonant tank design cannot achieve tight cross regulation of the dual-output channels at the worst-case load conditions. In addition, proper magnetizing inductance is required to achieve zero voltage switching (ZVS) of the power MOSFETs in the LLC resonant converter. In this paper, voltage gain of modulation methods and steady state operations are analyzed to implement the hybrid control method. In addition, the operation of the hybrid control algorithm is analyzed to achieve tight cross regulation performance. From this analysis, the design methodology of the resonant tank and the magnetizing inductance are proposed to compensate the output error of both outputs and to achieve ZVS over the entire load range. The cross regulation performance is verified with simulation and experimental results using a 190 W prototype converter.

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“…Once a new SIMO converter is proposed, one of the main performance challenges is analysing the cross-regulation model. An analytical model for minimising cross-regulation in multi-output converters is presented in [20][21][22][23]. Then, some methods are proposed to solve the issue of cross-regulation based on acquiring the model of these converters.…”

Section: Introductionmentioning

confidence: 99%

Analysis of fly‐buck converter with emphasis on its cross‐regulation

Chai

et al. 2017

IET Power Electronics

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Cross-regulation is one of the critical challenges in single-input and multi-output converters. In this study, new design guidelines and an analytical model for studying the cross-regulation between the dual-outputs of the fly-buck converter are proposed. A small-signal AC model is first established to obtain control over the output and to determine the cross-influence transfer functions of the system. Then, a load regulation coefficient and method for analysing the cross-regulation while considering the load magnitude and load change are proposed to study the characteristics of the fly-buck converter. Finally, to demonstrate the rationality behind the influencing factors over cross-regulation based on the resulting characteristics, a fly-buck converter with double control variables and lower cross-regulation is designed. Simulations and experimental prototypes are implemented to demonstrate the effectiveness of the proposed theoretical analysis.

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Analysis and Design of a Double-Output Series-Resonant DC–DC Converter

Cited by 16 publications

References 19 publications

Design of a two‐output forward converter with an output voltage objective function

Design of a two‐output forward converter with an output voltage objective function

Design Methodology of Tightly Regulated Dual-Output LLC Resonant Converter Using PFM-APWM Hybrid Control Method

Analysis of fly‐buck converter with emphasis on its cross‐regulation

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