A Single-Stage Fast Regulator With PFC Based on an Asymmetrical Half-Bridge Topology

Wu, T.-F.; Hung, J.-C.; Tseng, S.-Y.; Chen, Yaow-Ming

doi:10.1109/tie.2004.841098

Cited by 75 publications

(18 citation statements)

References 10 publications

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“…To further distribute the voltage stress between primary and secondary sides while relieving the input noise problem, a boostintegrated isolated converter, where a boost converter is topologically integrated in the primary side [20]- [23], can be converted to the stacked structure, as shown in Fig. 2(c).…”

Section: High Step-up Converter Based On Boost-integrated Isolatementioning

confidence: 99%

“…Till now, various types of boost-integrated structure have been developed [20]- [23]. Among them, as a basic topology for the stacked structure, the voltage-doubler-rectifier boost-integrated half-bridge (VDRBHB) converter shown in Fig.…”

Section: High Step-up Converter Based On Boost-integrated Isolatementioning

confidence: 99%

“…3(a) is one of the fine candidates [22]. Combining the boost-integrated half-bridge (BHB) converter [20], [21] with the voltage-doubler rectifier (VDR) in the secondary side [31]- [36], this converter has ZVS capability, continuous input current, and low voltage stress on switch and diode, and all these features make it inherently suitable for high step-up applications with high efficiency. Therefore, it is converted to the stacked structure in this paper.…”

Section: High Step-up Converter Based On Boost-integrated Isolatementioning

confidence: 99%

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Nonisolated High Step-Up Stacked Converter Based on Boost-Integrated Isolated Converter

Park

Moon

Youn

2011

IEEE Trans. Power Electron.

142

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To obtain a high step-up gain with high efficiency in nonisolated applications, a high step-up technique based on isolated-type converters is introduced in this paper. By stacking the secondary side of an isolated converter in addition to its primary side, a high step-up conversion ratio and a distributed voltage stress can be achieved. Moreover, a careful choice of an isolated converter can provide zero-voltage switching, continuous input current, and reduced reverse recovery on diodes. Based on a conventional voltage-doubler-rectifier boost-integrated half-bridge converter, the derived converter satisfies all these features, which make it suitable for high step-up applications. The operational principle and characteristics of the proposed converter are presented, and verified experimentally with a 135-W, 24-V input, 250-V output prototype converter for a LED driver.Index Terms-Boost converter, boost-integrated half bridge (BHB) converter, high step-up converter, isolated converter, zerovoltage switching (ZVS).

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Section: High Step-up Converter Based On Boost-integrated Isolatementioning

confidence: 99%

Section: High Step-up Converter Based On Boost-integrated Isolatementioning

confidence: 99%

Section: High Step-up Converter Based On Boost-integrated Isolatementioning

confidence: 99%

See 1 more Smart Citation

Nonisolated High Step-Up Stacked Converter Based on Boost-Integrated Isolated Converter

Park

Moon

Youn

2011

IEEE Trans. Power Electron.

142

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“…As shown in (20), P o is functions of y and f s . From (19), the parameter y would vary slightly when k is in the neighbor of 2.3.…”

Section: B Dimming Operationmentioning

confidence: 99%

“…In pursuit of high efficiency and high power factor, researchers have presented many single-stage ac/dc converters based on the integration of a PFC stage and a dcto-dc stage [18][19][20][21][22][23][24][25][26][27][28][29]. By sharing one or two active switches, the single-stage approaches have the advantages of less component count, simply circuit topology and cost effective.…”

Section: Introductionmentioning

confidence: 99%

An Integrated High-Power-Factor Converter With ZVS Transition

Chang

Cheng

Chang

et al. 2016

IEEE Trans. Power Electron.

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This paper proposes a single-phase high-powerfactor ac/dc converter with soft-switching characteristic. The circuit topology is derived by integrating a boost converter and a buck converter. The boost converter performs the function of power-factor correction (PFC) to obtain high power factor and low current harmonics at the input line. The buck converter further regulates the dc-link voltage to provide a stable dc output voltage. Without using any active-clamp circuit or snubber circuit, the active switches of the proposed converter can achieve zero-voltage switching-on (ZVS) transition together with high power factor that satisfies the IEC 61000-3-2 standards over a wide load range from 30% to 100% rated power. The steady-state analysis is developed and a design example is provided. A prototype circuit of 60 W was built and tested. Experimental results verify the feasibility of the proposed circuit with satisfactory performance.

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Analysis and design of a half‐bridge LLC series resonant converter employing two transformers

Lin

2011

Circuit Theory & Apps

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SUMMARYThis paper presents a two-transformer LLC series resonant converter (SRC), which is derived from incorporating two identical converters. The proposed converter allows a low-profile power supply design for liquid crystal display (LCD) TVs and servers. The presented converter can equally share the total load current between two transformers and the output rectifier modules. Therefore, the heat problem can be effectively relieved. The steady-state analysis and design of this new twotransformer LLC SRC are described. The experimental results are recorded for a prototype converter with an output voltage of 12 V, an output power of 300 W, and a resonant frequency of 74 kHz.

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A Single-Stage Fast Regulator With PFC Based on an Asymmetrical Half-Bridge Topology

Cited by 75 publications

References 10 publications

Nonisolated High Step-Up Stacked Converter Based on Boost-Integrated Isolated Converter

Nonisolated High Step-Up Stacked Converter Based on Boost-Integrated Isolated Converter

An Integrated High-Power-Factor Converter With ZVS Transition

Analysis and design of a half‐bridge LLC series resonant converter employing two transformers

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