Isolated Switch-Mode Current Regulator With Integrated Two Boost LED Drivers

Kim, Jae-Kuk; Lee, Jae-Bum; Moon, Gun-Woo

doi:10.1109/tie.2013.2293700

Cited by 34 publications

(10 citation statements)

References 10 publications

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“…The input current i g is zero outside the interval given by (4). This will introduce cross-over distortion.…”

Section: Inherent Pfc Propertymentioning

confidence: 99%

“…In an effort to comply with the standards, considerable efforts have been made on the development of the power factor correction (PFC) converter topologies. The most commonly used topology in ac/dc conversion is the 'two-stage' topology [3][4][5][6][7][8][9][10][11]. In this topology, a boost converter is controlled to obtain a sinusoidal input current.…”

Section: Introductionmentioning

confidence: 99%

“…In this topology, a boost converter is controlled to obtain a sinusoidal input current. This PFC stage is then followed by a dc/dc converter which normally provides galvanic isolation and output voltage regulation [3][4][5][6][7]. Although relatively mature, the two-stage PFC converters have two power processing stages with respective control circuits.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Low‐power single‐stage power factor rectifier based on discontinuous capacitor voltage mode double‐ended forward converter

Yang

Al-Naemi

Zhang

2015

IET Power Electronics

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A double-ended forward converter with an input inductor-capacitor (LC) filter operating in discontinuous capacitor voltage mode is proposed in this study. The most important advantage of the proposed topology is that the operations of the proposed converter make the switches bear only a portion of the peak capacitor voltage without any extra control and auxiliary winding, which result in a relatively low switches voltage stress. This study presents a detailed analysis of the switch voltage stress. The experimental results for a 36 V dc /100 W are presented.

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“…The input current i g is zero outside the interval given by (4). This will introduce cross-over distortion.…”

Section: Inherent Pfc Propertymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Low‐power single‐stage power factor rectifier based on discontinuous capacitor voltage mode double‐ended forward converter

Yang

Al-Naemi

Zhang

2015

IET Power Electronics

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“…Nowadays the LLC (inductor-inductor-capacitor) resonant converter shown in Fig. 1 is employed in numerous applications including photovoltaic systems, such as energy storage system, electric vehicle charging system, and so on [1]- [4]. Compared with the non-isolated converter, the advantages of the LCC resonant converter with high efficiency are summarized as follows: ZVS (Zero Voltage Switching) is realized for the primary-side MOSFETs and ZCS (Zero Current Switching) is realized for the secondary-side rectifier diodes [5] [6].…”

Section: Introductionmentioning

confidence: 99%

A New LLSC Series Quasi-Resonant Converter With Narrow Switching Frequency Variation

Zhu

Wang

et al. 2020

IEEE Access

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Symbol Quantity Ceq Equivalent capacitance C Basic capacitance ɑ phase shift M Voltage gain fr Resonant frequency fs Switching frequency k Inductance ratio Q Quality factor Lr Resonant inductance Lm Transformer inductance Cr Resonant capacitance Cs Stray capacitance Rac Equivalent AC load ILr Resonant current Ibyp Bypass current Pt Apparent power Kg Magnetic core geometric Kf Waveform factor BAC Window factor ABSTRACT In this paper, the FHA model including the stray capacitance is analysed. The causes of the voltage gain distortion are studied. Limiting the working frequency is an effective method to solve the voltage gain distortion problem. A new type of the LLSC converter is proposed in the paper. It can regulate the voltage at a constant frequency. At the same time, the soft switch can be realized if the parameter design is reasonable. The proposed converter can overcome the voltage gain distortion problem and obtain the high efficiency at the light load condition. Some mathematical analyses are used to prove that the proposed converter can avoid the voltage gain distortion problems. The simulation and experimental results based on a 200W LLSC converter prototype confirm the correctness of the topology.

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“…Figure 3b shows a boost DC/DC converter which is used when the LED voltage is higher than the input voltage. The converter can achieve 90% upper efficiency and has an advantage in EMI due to the filter effect of the main inductance [18]. …”

Section: Introductionmentioning

confidence: 99%

Design of an LLC Resonant Converter for Driving Multiple LED Lights Using Current Balancing of Capacitor and Transformer

Han

Lim

2015

Energies

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Abstract:In this study, to achieve the constant current drive and brightness control without a separate pulse width modulation (PWM) converter, a single converter is designed and verified by experiment under the condition of a multiple LED light load with different output voltage (Vf) characteristics. In the case of the input of 140 Watt class level, the proposed converter can drive two voltage type 95 Vdc (300 mA) light emitting diode (LED) lights loads and 120 Vdc (300 mA) LED lights loads simultaneously. In addition, to improve commercial compatibility, the proposed converter is operated in a wide range of the input voltage 90~264 Vac; also, the Power Factor Correction (PFC) circuit with the input power factor of more than 0.9 is added. In order to maximize the power conversion efficiency, a LLC resonant converter is applied to the PFC block with the output voltage of 380 Vdc and to a DC-DC conversion block. Finally, reliability of the proposed converter is verified through total harmonic distortion (THD) and electromagnetic interference (EMI) tests.

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Isolated Switch-Mode Current Regulator With Integrated Two Boost LED Drivers

Cited by 34 publications

References 10 publications

Low‐power single‐stage power factor rectifier based on discontinuous capacitor voltage mode double‐ended forward converter

Low‐power single‐stage power factor rectifier based on discontinuous capacitor voltage mode double‐ended forward converter

A New LLSC Series Quasi-Resonant Converter With Narrow Switching Frequency Variation

Design of an LLC Resonant Converter for Driving Multiple LED Lights Using Current Balancing of Capacitor and Transformer

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