A Novel Valley-Fill SEPIC-Derived Power Supply Without Electrolytic Capacitor for LED Lighting Application

Ma, Hongbo; Lai, Jih-Sheng; Feng, Quanyuan; Yu, Wensong; Zheng, Cong; Zhao, Zheng

doi:10.1109/tpel.2011.2174446

Cited by 168 publications

(78 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…C is the output capacitor of Vo1. The capacitor used to complete a certain voltage output voltage can be represented by (5).…”

Section: Realization Methods Of Non-electrolytic Capacitormentioning

confidence: 99%

See 1 more Smart Citation

Optimized Constant Current and Ripple Control of Non-electrolytic Capacitor LED AC/DC Power

Li¹,

Chen²,

Li³

et al. 2017

dtetr

View full text Add to dashboard Cite

For the traditional power supply of the non-continuous load Boost-Buck LED, when it has a high power factor, it will produce a significant low frequency ripple current. In this paper, a new type of LED driver power supply technology based on buck boost topology is proposed. The advantage of this technique is that the low frequency ripple current is greatly reduced without affecting the performance of the power factor and the advantages of high efficiency and low cost of the traditional boost buck LED driver are also preserved. We validate the performance of this new technology through a 30W and 50V-2A experimental prototype.

show abstract

“…C is the output capacitor of Vo1. The capacitor used to complete a certain voltage output voltage can be represented by (5).…”

Section: Realization Methods Of Non-electrolytic Capacitormentioning

confidence: 99%

“…It is the fourth generation light source following incandescent lamp, fluorescent lamp and high-intensity discharge lamp [1][2][3][4][5] . The development of LED lighting technology needs high reliability, high power factor, long lifetime and low cost LED drivers.…”

Section: Introductionmentioning

confidence: 99%

Optimized Constant Current and Ripple Control of Non-electrolytic Capacitor LED AC/DC Power

Li¹,

Chen²,

Li³

et al. 2017

dtetr

View full text Add to dashboard Cite

show abstract

“…Therefore, the input current of such a converter is highly distorted, which results in a large amount of harmonics and a low power factor. To address these problems, various power factor correction (PFC) ac-dc converters have been proposed and developed [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Improved Single-Stage AC-DC LED-Drive Flyback Converter using the Transformer-Coupled Lossless Snubber

Jeong¹,

Kwon²

2016

Journal of Electrical Engineering and Technology

View full text Add to dashboard Cite

-This paper presents an improved single-stage ac-dc LED-drive flyback converter using the transformer-coupled lossless (TCL) snubber. The proposed converter is derived from the integration of a full-bridge diode rectifier and a conventional flyback converter with a simple TCL snubber. The TCL snubber circuit is composed of only two diodes, a capacitor, and a transformer-coupled auxiliary winding. The TCL snubber limits the surge voltage of the switch and regenerates the energy stored in the leakage inductance of the transformer. Also, the switch of the proposed converter is turned on at a minimum voltage using a formed resonant circuit. Thus, the proposed converter achieves high efficiency. The proposed converter utilizes only one general power factor correction (PFC) control IC as its controller and performs both PFC and output power regulation, simultaneously. Therefore, the proposed converter provides a simple structure and an economic implementation and achieves a high power factor without the need for any separate PFC circuit. In this paper, the operational principle of the proposed converter is explained in detail and the design guideline of the proposed converter is briefly shown. Experimental results for a 40-W prototype are shown to validate the performance of the proposed converter.

show abstract

“…Flyback PFC can resolve the polarity reversal problem and possesses the characteristic of galvanic isolation, but it has the significant drawback of low efficiency [8]- [13]. Compared with the aforementioned step-up/step-down PFCs, the SEPIC type performs better in total harmonic distortion (THD), efficiency, and power factor [14]- [16].…”

Section: Introductionmentioning

confidence: 99%

Dual-Output Single-Stage Bridgeless SEPIC with Power Factor Correction

Shen¹,

Yang²

2015

Journal of Power Electronics

View full text Add to dashboard Cite

This study proposes a dual-output single-stage bridgeless single-ended primary-inductor converter (DOSSBS) that can completely remove the front-end full-bridge alternating current-direct current rectifier to accomplish power factor correction for universal line input. Without the need for bridge diodes, the proposed converter has the advantages of low component count and simple structure, and can thus significantly reduce power loss. DOSSBS has two uncommon output ports to provide different voltage levels to loads, instead of using two separate power factor correctors or multi-stage configurations in a single stage. Therefore, this proposed converter is cost-effective and compact. A magnetically coupled inductor is introduced in DOSSBS to replace two separate inductors to decrease volume and cost. Energy stored in the leakage inductance of the coupled inductor can be completely recycled. In each line cycle, the two active switches in DOSSBS are operated in either high-frequency pulse-width modulation pattern or low-frequency rectifying mode for switching loss reduction. A prototype for dealing with an 85-265 V rms universal line is designed, analyzed, and built. Practical measurements demonstrate the feasibility and functionality of the proposed converter.

show abstract

A Novel Valley-Fill SEPIC-Derived Power Supply Without Electrolytic Capacitor for LED Lighting Application

Cited by 168 publications

References 30 publications

Optimized Constant Current and Ripple Control of Non-electrolytic Capacitor LED AC/DC Power

Optimized Constant Current and Ripple Control of Non-electrolytic Capacitor LED AC/DC Power

Improved Single-Stage AC-DC LED-Drive Flyback Converter using the Transformer-Coupled Lossless Snubber

Dual-Output Single-Stage Bridgeless SEPIC with Power Factor Correction

Contact Info

Product

Resources

About