Experimental analysis of a new zero-voltage switching synchronous rectifier buck converter

Yahaya, Nor Zaihar; Begam, K. M.; Awan, M.

doi:10.1049/iet-pel.2010.0218

Cited by 14 publications

(12 citation statements)

References 8 publications

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“…Thus, the array effectively allows for a wider conversion ratio. The measured system efficiency of the proposed converter is about 75%; however, the efficiency can be increased when soft‐switching and synchronous rectification are implemented [20]. The measured efficiency of the conventional quadratic buck converter for the same operating condition is about 78%; that is, the efficiency reduces only 3%.…”

Section: Resultsmentioning

confidence: 99%

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Switched‐capacitor quadratic buck converter for wider conversion ratios

Reyes-Malanche

Vázquez

Leyva-Ramos

2015

IET Power Electronics

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Low voltage and high current are typical requirements for the input source of the new family of microprocessors; therefore there is the need to develop new topologies and control strategies that can meet such requirements. A narrow duty ratio has limited the application of the conventional buck converter for wider step-down DC-DC conversion. An interesting option is to consider the quadratic buck converter; however, there is still the problem to obtain a wider step-down conversion. In this study, a switched-capacitor quadratic buck converter is proposed such that a wider conversion ratio is obtained for lower-output voltages. The converter consists of a quadratic buck converter with an array of capacitors and diodes, also referred as a voltage multiplier. To illustrate the behaviour of the proposed converter, experimental results are shown for a conversion from 36 to 1.5 V and an output power of 30 W. The efficiency of the proposed converter can be effectively increased when soft-switching and synchronous rectification are implemented.

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Section: Resultsmentioning

confidence: 99%

“…It can be seen that when the input voltage is reduced, the efficiency becomes lower in the three cases; the efficiency of the proposed and conventional converters at full load and considering an input voltage (20) of 36 V is just below 3%, but for the proposed converter assuming synchronous rectification is above 6%.…”

Section: Efficiency Comparisonmentioning

confidence: 94%

Switched‐capacitor quadratic buck converter for wider conversion ratios

Reyes-Malanche

Vázquez

Leyva-Ramos

2015

IET Power Electronics

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“…In [8] zero voltage switching method is proposed in the buck converter. This converter completely analysis switch current.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Three Phase Soft Switching Inverter Incorporating Fuzzy Logic Controller

2019

IJEAT

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A soft switching three phase inverter with the fuzzy logic system is proposed . The controller design is explained in this paper. The soft switching is achieved through zero voltage switching methods.The soft switching is attain through auxiliary circuits.Therefore, the auxiliary circuit will be enhanced the conversion efficiency, and the conduction loss will be scaled down. The performance of proposed controller is illustrated using MATLAB Simulink.The mode of the prototype is fabricated and tested. The Simulation and hardware results validate each other, which show that the presented method is both satisfactory and consistent with expectation.

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“…A synchronous rectifier may replace the freewheeling diode in order to reduce not only the conduction loss, but also to increase the efficiency considerably. According to the literature [20][21][22], this last configuration is better known as the synchronous rectifier QBC. The conduction time for the main MOSFET is smaller compared with the freewheeling diode, which, it means that the conduction losses reach high values.…”

Section: Introductionmentioning

confidence: 99%

Delayed quadratic buck converter

Vázquez

Reyes-Malanche

Vázquez³

et al. 2016

IET Power Electronics

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Nowadays, the microprocessors family normally require for the input source not only low voltage but also high current. There exists an increasing necessity for developing new applied techniques on topologies and control strategies, which may be able to fulfil such requirements. Although a considerable amount of applications use the conventional buck converter for step-down for DC/DC conversion, when a high step-down conversion is required is a much better choice to implement the quadratic buck converter (QBC); however, the problem for obtaining a high step-down conversion at wide duty ratio still remains. This document proposes the delayed quadratic buck converter, which offers a very high-step-down dc-dc conversion with a wide duty cycle. The QBC is modified in its topology by adding an inductor, which allows us to obtain for the duty cycle a higher increment than this normally obtained by a quadratic one. Converter behaviour and analysis are illustrated. Experimental results are also shown for a conversion from 36 to 1.5 V and an output power of 20 W.

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Experimental analysis of a new zero-voltage switching synchronous rectifier buck converter

Cited by 14 publications

References 8 publications

Switched‐capacitor quadratic buck converter for wider conversion ratios

Switched‐capacitor quadratic buck converter for wider conversion ratios

Design and Analysis of Three Phase Soft Switching Inverter Incorporating Fuzzy Logic Controller

Delayed quadratic buck converter

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