A Boost PFC Stage Utilized as Half-Bridge Converter for High-Efficiency DC–DC Stage in Power Supply Unit

Baek, Jae-Il; Kim, Jae-Kuk; Lee, Jae-Bum; Youn, Han-Shin; Moon, Gun-Woo

doi:10.1109/tpel.2016.2631626

Cited by 39 publications

(9 citation statements)

References 15 publications

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“…2 [15]- [17], has many advantages, such as simple structure, high PF and low EMI [18]- [20]. Thus it has had the widest adoption in the LED lighting industry [21]. As shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Control Design and Performance Analysis of a Double-Switched LLC Resonant Rectifier for Unity Power Factor and Soft-Switching

Zhang

Zeng

et al. 2020

IEEE Access

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This paper presents and analyzes an AC-DC power converter structure, which is comprised of a Power Factor Correction (PFC) module and a LLC resonant DC-DC converter module. This converter only uses two switches, and requires three less diodes and one less switch compared to popular LLC resonant converter solutions. Compared to its conventional counterpart, the rectifier of interest has high energy efficiency while a smaller size, owing to the soft-switching in the LLC resonant converter. Detailed theoretical analyses are conducted in this study, followed by software simulation and hardware experimentation, which demonstrate that the single stage double-switched (DS)-LLC rectifier is able to realize unity power factor and a wide output range, indicating its effectiveness and applicability.

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“…2 [15]- [17], has many advantages, such as simple structure, high PF and low EMI [18]- [20]. Thus it has had the widest adoption in the LED lighting industry [21]. As shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Control Design and Performance Analysis of a Double-Switched LLC Resonant Rectifier for Unity Power Factor and Soft-Switching

Zhang

Zeng

et al. 2020

IEEE Access

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“…In the front‐end SMPS, the inlet is connected to the ac grid and outputs 12 V dc. Hold‐up time is a common requirement of SMPS, especially with a wide‐range input voltage [1, 2]. The hold‐up time is defined as that the converter should maintain the dc output voltage in the operational rage for a few milliseconds (typically 10–20 ms) when the ac input line goes down [3].…”

Section: Introductionmentioning

confidence: 99%

Dual‐switch forward converter with an additional reset capacitor for hold‐up operation

Jin

Wan

Xu³

et al. 2019

J. eng.

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“…In order to obtain a lighter weight and a smaller volume, a switching-mode converter is regarded as the power processor of the power system. When a power factor corrector (PFC) is used for the AC/DC power system [2][3][4][5][6][7][8][9][10][11][12] to protect the line source from harmonic current pollution, it has to meet the recommended limits of harmonics in supply current by various international power quality standards, such as the International Electrotechnical Commission (IEC) 61000-3-2 [2]. Therefore, the AC/DC converter adopts PFC techniques to increase converter.…”

Section: Introductionmentioning

confidence: 99%

Power Factor Corrector with Bridgeless Flyback Converter for DC Loads Applications

Tseng

Huang

2018

Energies

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Since power systems with a DC distribution method has many advantages, such as conversion efficiency increase of about 5-10%, cost reducing by about 15-20% and so on, the AC distribution power system will be replaced by a DC distribution one. This paper presents a DC load power system for a DC distribution application. The proposed power system includes two converters: DC/DC converter with battery source and power factor corrector (PFC) with a line source to increase the reliability of the power system when renewable energy or energy storage equipment are adopted. The proposed PFC adopts a bridgeless flyback converter to achieve power factor correction for supplying power to DC loads. When the bridgeless flyback converter is used to achieve PFC, it needs two transformers to process positive and negative half periods, respectively. In order to increase conversion efficiency, the flyback one can add two sets of the active clamp circuit to recover energies stored in leakage inductances of transformers in the converter. Therefore, the proposed bridgeless flyback converter can not only integrate two transformers into a single transformer, but also share a clamp capacitor to achieve energy recovery of leakage inductances and to operate switches with zero-voltage switching (ZVS) at the turn-on transition. With this approach, the proposed converter can increase conversion efficiency and decrease component counts, where it results in a higher conversion efficiency, lower cost, easier design and so on. Finally, a prototype with a universal input voltage source (AC 90-265 V) under output voltage of 48 V and maximum output power of 300 W has been implemented to verify the feasibility of the proposed bridgeless flyback converter. Furthermore, the proposed power system can be operated at different cases among load power P L , output power P DC1 of DC/DC converter and output power P DC2 of the proposed PFC for supplying power to DC loads.Energies 2018, 11, 3096 2 of 20 power factor (PF), in which input voltage waveform can be made to be completely in phase with the input current one, implying approximately unity power factor.

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A Boost PFC Stage Utilized as Half-Bridge Converter for High-Efficiency DC–DC Stage in Power Supply Unit

Cited by 39 publications

References 15 publications

Control Design and Performance Analysis of a Double-Switched LLC Resonant Rectifier for Unity Power Factor and Soft-Switching

Control Design and Performance Analysis of a Double-Switched LLC Resonant Rectifier for Unity Power Factor and Soft-Switching

Dual‐switch forward converter with an additional reset capacitor for hold‐up operation

Power Factor Corrector with Bridgeless Flyback Converter for DC Loads Applications

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