Design-Oriented Analysis and Performance Evaluation of a Low-Cost High-Brightness LED Driver Based on Flyback Power Factor Corrector

Lamar, Diego G.; Arias, Manuel; Rodríguez, Ángel Cervera; Fernández, Arturo; Hernando, M.M.; Sebastián, J.

doi:10.1109/tie.2012.2196905

Cited by 72 publications

(28 citation statements)

References 26 publications

(26 reference statements)

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“…For example, if the duty cycle increases, the output voltage increases and the bus voltage decreases in the same amount. The sum of both voltages does not depend on the duty cycle, being only proportional to the line peak voltage, as given by the following equation (2).…”

Section: Continuous Conduction Mode (Ccm)mentioning

confidence: 99%

Design of Integrated Double Buck Boost Converter for Industrial Applications

Kumar¹,

Monica²,

Kannan³

2015

IJAREEIE

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An Integrated double buck boost converter is analyzed and the design methodology is made as a high power factor of the power supply for the power LED lamps. -The IDBB converter features just one controlled switch and two inductors and is able to supply a solid-state lamp from the mains, providing high power factor. Here with a careful design of the converter, the filter capacitances can be made small enough so that film capacitors may be used in this way, the converter mean time between failures can be made high. The operation of the converter is equivalent to two buck-boost converters in cascade, in which the controlled switch is shared by the two stages. Compared to Buck boost converter this IDBB will provide high input power factor, reduced ripple current. Thus, the proposed converter includes two inductors, two capacitors, three diodes, and one ground-referenced controlled switch, featuring affordable low cost and good reliability for this kind of applications.

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Section: Continuous Conduction Mode (Ccm)mentioning

confidence: 99%

Design of Integrated Double Buck Boost Converter for Industrial Applications

Kumar¹,

Monica²,

Kannan³

2015

IJAREEIE

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“…The main concept of the single-stage ac-dc converter is that the PFC circuit and the high frequency dc-dc converter are simplified by sharing the switches of the PFC circuit and the dc-dc converter to eliminate the switch and control circuit for the PFC circuit. These single-stage ac-dc converters have the advantages of being simple and cost-effective [10,[14][15]. However, the conventional single-stage ac-dc converters still have drawbacks since they require a high capacity dc-link electrolytic capacitor and a boost inductor for the PFC circuit, similar to the two-stage ac-dc converters, and have high voltage stress and high switching loss of the main switch.…”

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

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-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.

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“…If the primary energy source is the ac line, then some type of ac-dc converter must be placed between the line and the HB-LEDs [3][4][5][6]. Furthermore, it is a well-known fact that the low-frequency harmonic content of the line current must comply with specific regulations (EN 61000-3-2 [7][8][9][10] and the ENERGY STAR® program [10]).…”

Section: Introductionmentioning

confidence: 99%

Using the loss-free resistor concept to design a simple ac-dc HB-LED driver for retrofit lamp applications

Lamar¹,

Arias²,

Hernando³

et al. 2014

2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014

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Abstract-Currently acknowledged, as a rapidly emerging technology, High-Brightness Light-Emitting Diodes (HB-LEDs) are considered the true alternative to many mature technologies (i.e., incandescent bulbs, compact fluorescent lamps, etc.) due to their high efficiency, low maintenance and durability. It is evident that the HB-LED driver must be durable and efficient to achieve these advantages. Moreover, in the case of replacing incandescent bulbs, the ac-dc HB-LED driver needs to be low cost and to have a high enough Power Factor (PF) to comply with international regulations. This paper presents a new proposal to design a simple low-cost ac-dc HB-LED driver for retrofit bulb lamps. The proposed solution originates from a very simple concept: the use a Switching Mode Power Supply (SMPS) acting as a Loss-Free Resistor (LFR) connected in series with the rectified mains to shape the line input current. For the proposed application, it is obvious that the LFR needs to have a very simple topology to be economical. However, efficiency cannot be ignored. This paper proposes the flyback converter working as a LFR connected in series with the rectified mains, operating in Boundary Conduction Mode (BCM) in order to improve its efficiency. First, a static analysis of the proposed concept will be presented. A distortion analysis of the input current of the proposed ac-dc HBLEDs driver will then be carried out to test compliance with international regulations. Finally, two 12 W experimental prototypes has been built and tested in order to validate the theoretical results presented in this paper. These results show the proposed ac-dc HB-LED driver to be a low-cost, high efficiency, quasi-sinusoidal input current option for designing retrofit lamps.

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Design-Oriented Analysis and Performance Evaluation of a Low-Cost High-Brightness LED Driver Based on Flyback Power Factor Corrector

Cited by 72 publications

References 26 publications

Design of Integrated Double Buck Boost Converter for Industrial Applications

Design of Integrated Double Buck Boost Converter for Industrial Applications

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

Using the loss-free resistor concept to design a simple ac-dc HB-LED driver for retrofit lamp applications

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