Zero-voltage-switching multiresonant technique-a novel approach to improve performance of high-frequency quasi-resonant converters

Tabisz, W.A.; Lee, F.C.Y.

doi:10.1109/63.41774

Cited by 215 publications

(36 citation statements)

References 10 publications

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“…Figure 1 shows the power stage of the proposed converter. The topology used here has some topological similarities with both the conventional SEPIC converter [5] and with the multi-resonant SEPIC converter proposed in [4]. However, the detailed component placement and sizing, operating characteristics, and control approach are all very different from previous designs.…”

Section: Introductionmentioning

confidence: 98%

“…Unlike many resonant converter designs [1]- [4], the proposed approach provides high efficiency over very wide input and output voltage ranges and power levels. It also provides up-anddown conversion, and requires little energy storage which allows for excellent transient response.…”

Section: Introductionmentioning

confidence: 99%

“…It also provides up-anddown conversion, and requires little energy storage which allows for excellent transient response. Unlike conventional quasi-resonant and multi-resonant converters [3], [4], no bulk inductor is used and the converter operates at fixed frequency and duty ratio. These attributes reduce passive component size, improve response speed, and enable the use of lowloss sinusoidal resonant gating.…”

Section: Introductionmentioning

confidence: 99%

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High-Frequency Resonant SEPIC Converter With Wide Input and Output Voltage Ranges

Yang

Sagneri

Rivas

et al. 2012

IEEE Trans. Power Electron.

152

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Abstract-This document presents a resonant Single-EndedPrimary-Inductor-Converter (SEPIC) converter and control method suitable for high frequency (HF) and very high frequency (VHF) dc-dc power conversion. The proposed design features high efficiency over a wide input and output voltage range, upand-down voltage conversion, small size, and excellent transient performance. In addition, a resonant gate drive scheme is presented which provides rapid startup and low-loss at HF and VHF frequencies. The converter regulates the output using an on-off control scheme modulating at a fixed frequency (170 kHz). This control method enables fast transient response and efficient light load operation while providing controlled spectral characteristics of the input and output waveforms. A hysteretic override technique is also introduced which enables the converter to reject load disturbances with a bandwidth much greater than the modulation frequency, limiting output voltage disturbances to within a fixed value. An experimental prototype has been built and evaluated. The prototype converter, built with two commercial vertical MOSFETs, operates at a fixed switching frequency of 20 MHz, with an input voltage range of 3.6 V to 7.2 V, an output voltage range of 3 V to 9 V and an output power rating of up to 3W. The converter achieves higher than 80% efficiency across the entire input voltage range at nominal output voltage, and maintains good efficiency across the whole operating range.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

High-Frequency Resonant SEPIC Converter With Wide Input and Output Voltage Ranges

Yang

Sagneri

Rivas

et al. 2012

IEEE Trans. Power Electron.

152

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show abstract

“…Numerous soft-switching DC-DC converter topologies with different approaches were reported. On one hand there are resonant, quasi-resonant and multi-resonant converters [5][6][7], mainly with variable switching frequency, while on the other are soft-switch PWM converters with constant switching frequency [8]. If a constant switching frequency is preferable for the application, a PWM converter is the right choice, although it is possible to operate a resonant converter with PWM at constant switching frequency [9].…”

Section: Introductionmentioning

confidence: 99%

High Power Soft—switching IGBT DC—DC Converter

Čobanov¹,

Jakopović

Šunde

2013

Automatika

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A soft-switching topology for high power buck converter is proposed. Zero-current turn-on and zero-voltage turn-off is achieved without auxiliary switches. All active switches in the converter transmit power to the load equally. Converter control is simple despite four active switches. Converter operation is described and DC analysis is carried out. All operation modes are identified. The condition for soft-switching is derived. A full-scale 38 kW laboratory prototype with 1700 V IGBT modules is built for railway application. Switching frequency is fixed at 20 kHz. Experimental results are shown. The results confirm the analysis. A high efficiency of 97 % is achieved.Key words: buck converter, IGBT switch, soft-switching, static characteristic IGBT pretvarač za velike snage s mekim sklapanjem. Predstavljena je nova topologija silaznog istosmjernog pretvarača s mekim sklapanjem pogodna za velike snage. Isklapanje pri nuli napona i uklapanje pri nuli struje ostvareno je bez pomoćnih sklopki. Sve aktivne sklopke u pretvaraču prenose snagu u teret podjednako. Upravljanje pretvaračem je jednostavno unatoč većem broju aktivnih sklopki. Opisan je i analiziran rad pretvarača. Identificirani su svi načini rada. Izvedeni su uvjeti za meko sklapanje. Izraen je laboratorijski model pretvarača u punoj snazi od 38 kW. Model je izveden s 1700 V-tnim IGBT modulima, a za primjenu na tračničkim vozilima. Sklopna frekvencija je konstantna i iznosi 20 kHz. Prikazani su rezultati mjerenja. Potvrena je provedena analiza. Postignut je visoki stupanj korisnog djelovanja od 97 %.

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“…Qualitative descriptions of the modes in Fig. 11 can be found elsewhere: mode IcD of ZV converters is well known as the half-wave mode [3]; mode IC, of ZV-QSW converters is described in [6], while ZV-MR converters in CD modes are described in [7]; various CC modes are studied in [ 121; finally, mode IcD of Q,-PWM converters is discussed in [ 131. Experimental QR buck converters are shown in Fig. 12.…”

Section: B Operating Modesmentioning

confidence: 99%

A general approach to synthesis and analysis of quasi-resonant converters

Maksimović

Cuk

20th Annual IEEE Power Electronics Specialists Conference

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Abstract-A method for systematic synthesis of quasi-resonant (QR) topologies by addition of resonant elements to a parent PWM converter network is proposed. It is found that there are six QR classes with two resonant elements, including two novel classes. More complex QR converters can be generated by a recursive application of the synthesis method. Topological definitions of all known and novel QR classes follow directly from the synthesis method and topological properties of PWM parents. The synthesis of QR converters is augmented by a study of possible switch realizations and operating modes. In particular, it is demonstrated that a controllable rectifier can be used to accomplish the constant-frequency control in all QR classes. Links between the QR converters and the underlying PWM networks are extended to general dc and small-signal ac models, in which the model of the PWM parent is explicitly exposed. Results of steady-state analyses of selected QR classes and operating modes include boundaries of operating regions, dc characteristics, a comparison of switching transitions and switch stresses, and a discussion of relevant design trade-offs.

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Zero-voltage-switching multiresonant technique-a novel approach to improve performance of high-frequency quasi-resonant converters

Cited by 215 publications

References 10 publications

High-Frequency Resonant SEPIC Converter With Wide Input and Output Voltage Ranges

High-Frequency Resonant SEPIC Converter With Wide Input and Output Voltage Ranges

High Power Soft—switching IGBT DC—DC Converter

A general approach to synthesis and analysis of quasi-resonant converters

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