An Improved Asymmetrical Half-Bridge Converter With Self-Driven Synchronous Rectifier for Dimmable LED Lighting

Mujjalinvimut, Ekkachai; Ayudhya, Piyasawat Navaratana Na; Sangswang, Anawach

doi:10.1109/tie.2015.2477263

Cited by 16 publications

(10 citation statements)

References 29 publications

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“…In the case of the AHB, this topology is able to provide high reliability and high efficiency by reaching Zero Voltage Switching (ZVS) in the primary switches [165]- [169]. In addition, the control scheme and the limited output voltage range required for the driving of LEDs allow a small design for its output filter.…”

Section: ) Multi-stage Solutionsmentioning

confidence: 99%

“…Content may change prior to final publication. Citation information: DOI 10.1109/TPEL.2018.2890716, IEEE Transactions on Power Electronics Active: multi-stage -full cascade [157]- [159], [161], [163]- [184], [186]- [190], [192], [193]  86 [159], 92, 95 [158], [169], [183] 99 <10…”

Section: -99 <10mentioning

confidence: 99%

“…[159], [161], [163]- [184], [186]- [190], [192], [193] -Analog: [157]- [159], [164], [169], [173], [174] -Digital: [163], [165]- [167], [170], [172], [175]- [183], [189], [192], [193] -Mixed: [183], [186], [187] Yes. [157]- [159], [161], [163]- [184], [186]- [190], [192], [193] No electrolytic: [157]- [159], [163], [166], [167], [169], [170], [175], [177]- [180] Active: multi-stage -partial cascade [147]- [155]  Ability to control the light output.  Sinusoidal input current.…”

Section: -99 <10mentioning

confidence: 99%

See 2 more Smart Citations

A Review on Flicker-Free AC–DC LED Drivers for Single-Phase and Three-Phase AC Power Grids

Castro

Vázquez

Arias

et al. 2019

IEEE Trans. Power Electron.

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Light-Emitting Diodes (LEDs) are coming strongly into the lighting market due to their advantages over conventional lighting solutions: energy efficient, controllable in both light and color, long lifetime, lack of a warm-up period and high power density. Some of these advantages will make LED light sources to be more than just a lightbulb, being able to transmit data, control light color, hue and intensity or even detect people in indoor environments. Nevertheless, these advantages attributed to LED capabilities are, in reality, achieved thanks to the LED driver. The present work reviews the current stateof-the-art strategies to drive LEDs from ac power grids with special emphasis into removing the most limiting component from the point of view of the lifetime, which is the electrolytic capacitor, while achieving a flicker-free performance of the light output of the LED driver. Moreover, it focuses on analyzing the required regulations, challenges and applicability of LED drivers in both single-phase and three-phase ac power grids.Note: This only applies for certified dimmable luminaires. Audible noiseLuminaire shall not emit noise above 24 dBA at 1 meter or less at the minimum output.0885-8993 (c)

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Section: ) Multi-stage Solutionsmentioning

confidence: 99%

Section: -99 <10mentioning

confidence: 99%

Section: -99 <10mentioning

confidence: 99%

See 1 more Smart Citation

A Review on Flicker-Free AC–DC LED Drivers for Single-Phase and Three-Phase AC Power Grids

Castro

Vázquez

Arias

et al. 2019

IEEE Trans. Power Electron.

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show abstract

“…Integration of ZVS condition and SR is a challenging topic in many researches for different applications [22,23]. In [12], SR is adopted with asymmetrical half-bridge converter where the output voltage polarity is used to generate gate signals. However, a large inductor should be used after the rectifiers.…”

Section: Introductionmentioning

confidence: 99%

A novel resonant ZVS power converter with self‐driven synchronous rectifier for low‐voltage high‐current applications

Nourieh

Sun

Simpson

2021

IET Power Electronics

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This paper presents a novel isolated resonant zero‐voltage switching converter with a self‐driven synchronous rectifier for low‐voltage high‐current applications. The active resonant tank comprises of a transformer leakage inductance, a capacitor and a diode‐connected MOSFET which provides zero‐voltage switching conditions for all switches. Due to the use of leakage inductance of the transformer in both the primary and secondary sides, the resonant tank and the output section require no external inductor, resulting in a major size reduction of the circuit. The proposed converter has the advantages of high efficiency; low switching, conducting, and thermal losses; high switching frequency range and isolation; and small size. To verify the proposed converter, a laboratory prototype was manufactured with satisfactory performance. The practical results show that the power efficiencies of the converter including self‐driven synchronous rectifier for the light load and the full load are 91.9% and 94.95% at output power Pout = 20 W and Pout = 100 W, respectively.

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“…As LED light source is usually driven by a constant current, the quality of driver will affect the overall performance of the light source. Asymmetric half-bridge converter has features of high conversion efficiency, low voltage stress, constant frequency control, and a small capacitive filter [4], it has great advantages when applied to high-power LED driver [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Discrete-Time Modeling of High Power Asymmetric Half-Bridge LED Constant-Current Driver Controlled by Digital Current Mode

Qiao¹,

Wang²,

Wang³

et al. 2020

Preprint

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The high-power Asymmetric half-bridge Converter (AHBC) LED constant current driver controlled by digital current mode is a fourth-order system. Static operating point, parasitic resistance, load characteristics, sampling effect, modulation mode and loop delay will have great influence on its dynamic performance. In this paper, the small-signal pulse transfer function of the driver is established by the discrete-time modeling method for the two operating points corresponding to the three modulation modes of the trailing edge, leading edge and double edge. And, the effects of parasitic parameters, delay effect, sampling effect and load effect are fully considered in modeling. For a large number of complex exponential matrix operations, the first order Taylor formula is used for approximate calculation after the coefficient matrix is obtained by substituting the data. Then, Matlab software is used to compare and analyze the discrete-time model and the discrete-average model. The results show that the proposed discrete-time model can more accurately characterize the resonant peak and high-frequency dynamic characteristics, and is very suitable for the design of high frequency digital controller.

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An Improved Asymmetrical Half-Bridge Converter With Self-Driven Synchronous Rectifier for Dimmable LED Lighting

Cited by 16 publications

References 29 publications

A Review on Flicker-Free AC–DC LED Drivers for Single-Phase and Three-Phase AC Power Grids

A Review on Flicker-Free AC–DC LED Drivers for Single-Phase and Three-Phase AC Power Grids

A novel resonant ZVS power converter with self‐driven synchronous rectifier for low‐voltage high‐current applications

Discrete-Time Modeling of High Power Asymmetric Half-Bridge LED Constant-Current Driver Controlled by Digital Current Mode

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