Passive Lossless Snubber for Boost PFC With Minimum Voltage and Current Stress

Li, R.T.H.; Chung, Henry Shu-Hung; Sung, Anson K. T.

doi:10.1109/tpel.2009.2035123

Cited by 75 publications

(3 citation statements)

References 35 publications

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“…To choose an optimal Mosfet (Q b ) for a boost converter implemented for PFC converters, there are some important Mosfet selection considerations, which can be summarized as follows: low on-state resistance (R dson ) for low power losses, fast turn-on/off switching to reduce device switching losses, low output capacitances to increase efficiency with light load conditions, high dV DS /dt and high dI F /dt to withstand the spikes and overshoots, and low thermal resistance to decrease thermal power dissipation [1,30,31].…”

Section: Mosfet Switchmentioning

confidence: 99%

Design and Fabrication of an Isolated Two-Stage AC–DC Power Supply with a 99.50% PF and ZVS for High-Power Density Industrial Applications

Okilly

Baek

2022

Electronics

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Power quality in terms of power factor (PF), efficiency, and total harmonic distortions (THDs) is an important consideration in power supplies designed for 5G telecom servers. This paper presents a different magnetic parts design and manufacturing techniques of power supplies, design and selection criteria of switching elements as well as the optimal design of control loops based on small-signal stability modeling and an appropriate stability criterion. The designed telecom power supply consists of the power factor correction (PFC) stage to increase the input power factor and the isolated phase-shift pulse width modulation (PWM) zero-voltage switching (ZVS) DC–DC converter stage to regulate the supply voltage to the specified load value while maintaining a high conversion efficiency. A two-stage outdoor telecom power supply with a power rating of 2 kW was designed and fabricated on a printed circuit board (PCB). The distinct two-stage power components of the power supply were subjected to loss analysis. Furthermore, PSIM simulation and experiments were used to demonstrate the total harmonic distortions (THDs), voltage ripples, power efficiency, and PF performance of the supply current for the proposed power supply under various operating situations. This work produces an industrial high power density power supply with a high PF, low THD and high conversion efficiency which is suitable for telecom power server applications.

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Section: Mosfet Switchmentioning

confidence: 99%

Design and Fabrication of an Isolated Two-Stage AC–DC Power Supply with a 99.50% PF and ZVS for High-Power Density Industrial Applications

Okilly

Baek

2022

Electronics

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“…Resonant BBC topology that operates with ZVS or ZCS can be implemented by adding an LC circuit to BBC conventional topology. Further details can be consulted in [51][52][53][54][55][56][57][58][59][60][61][62][63]. The aforementioned resonant LC circuit requires an additional switch (a second one) to introduce an inductor to the converter circuit for providing an additional path with zero impedance where the current and voltage do not strongly change their values.…”

Section: Bbc Topologiesmentioning

confidence: 99%

PFC Single-Phase AC/DC Boost Converters: Bridge, Semi-Bridgeless, and Bridgeless Topologies

et al. 2021

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Power Factor Correction (PFC) single-phase AC/DC converters are used in several power electronics applications as full wave control rectifiers improving power quality and providing high standards of efficiency. Many papers dealing with the description or use of such topologies have been published in recent years; however, a review that describes and organizes their specific details has not been reported in the technical literature. Therefore, this paper presents an extensive review of PFC single-phase AC/DC converters operating with the Boost converter topology for low and medium voltage as well as and power appliances. A categorization of bridge, semi-bridgeless, and bridgeless, in accordance with the construction characteristics, was carried out in order to unify the technical terminology. Benefits and disadvantages are described and analyzed in detail. Furthermore, a comparison performance in terms of PFC, Total Harmonic Distortion (THD), power capacity, electromagnetic compatibility (EMC), number of elements, and efficiency is included.

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“…These features make it attractive at medium to high power levels with one or more full-bridge structures that interface renewable energy sources with loads [6], [7]. Adding auxiliary circuits composed of multiple semiconductors and passive elements around each power device in standard pulsewidth modulation (PWM) topologies achieves soft switching with more design effort and increased size and cost [8], [9].…”

Section: Introductionmentioning

confidence: 99%

Design Procedure for High-Frequency Operation of the Modified Series-Resonant APWM Converter to Reduce Size and Circulating Current

Tschirhart

Jain

2012

IEEE Trans. Power Electron.

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In this paper, a generalized analysis for the auxiliary network in a modified series-resonant asymmetrical pulsewidth-modulated (APWM) converter is performed to produce a design procedure that ensures that zero voltage switching (ZVS) is achieved for any series-resonant APWM converter design. New equations that correctly predict the magnitude of auxiliary current are obtained by accounting for the trapezoidal nature of the waveforms associated with high-frequency operation, and the dead time between the switches in the half-bridge. A design example of a 48-V/1.2-V, 25-A converter operating at 1 MHz is chosen to highlight the validity of the proposed design and that superior results can be achieved if the resonant tank is designed in tandem with the auxiliary network. Experimental results verify that ZVS is achieved, and that the proposed design reduces the auxiliary inductor by close to a factor of 3.

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Passive Lossless Snubber for Boost PFC With Minimum Voltage and Current Stress

Cited by 75 publications

References 35 publications

Design and Fabrication of an Isolated Two-Stage AC–DC Power Supply with a 99.50% PF and ZVS for High-Power Density Industrial Applications

Design and Fabrication of an Isolated Two-Stage AC–DC Power Supply with a 99.50% PF and ZVS for High-Power Density Industrial Applications

PFC Single-Phase AC/DC Boost Converters: Bridge, Semi-Bridgeless, and Bridgeless Topologies

Design Procedure for High-Frequency Operation of the Modified Series-Resonant APWM Converter to Reduce Size and Circulating Current

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