Power-transfer of isolated converter with integrated power sharing for LED-lighting system dependent on transformer coupling

Thomas, Werner; Pforr, Johannes

doi:10.1109/ecce.2010.5617990

Cited by 3 publications

(1 citation statement)

References 8 publications

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“…However, this solution will increase the cost and reduce power density of the driver [10,11]. Correspondingly, the single-inductor multiple-output (SIMO) LED drivers have attracted more and more attention recently [6,9,[12][13][14][15][16]. Here, each constant current module includes an independently series-connected power switch and all the modules are parallel connected to the one end of an inductor.…”

Section: Introductionmentioning

confidence: 99%

Analysis and design of a multi‐channel constant current LED driver based on DC current bus distributed power system structure

Luo

Huang

et al. 2020

IET Power Electronics

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The colourful light emitting diode (LED) strings require the corresponding driver to achieve independent control of each output current in the applications of RGB mixed colour LED lighting, LED projection etc. For this purpose, a multi-channel constant current LED driver based on DC current bus distributed power system structure is proposed and analysed here, which is composed of a source converter and several load converters as needed. The source converter adopts the flyback converter to realise power factor correction, electrical isolation, and the load converter adopts the current-type buck converter to realise independent control of the corresponding output current. A 60 W experimental prototype for 42.8 V/0.35 A, 40 V/0.5 A, 35.7 V/ 0.7 A three outputs with the universal input voltages 90-264 V is designed and implemented, and the experimental results are presented to verify the correctness of the theory analysis. 2 Independent closed-loop control strategy The control schematic diagram of the proposed LED driver is shown in Fig. 2. Four current control circuits (CCS) are included to produce the drive signals of Q s , Q 1 , Q 2 and Q 3 , and eventually

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Section: Introductionmentioning

confidence: 99%

Analysis and design of a multi‐channel constant current LED driver based on DC current bus distributed power system structure

Luo

Huang

et al. 2020

IET Power Electronics

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Simulation of simple capacitive-isolated LED drivers

Gasson-Garcia

Garduno-Wilches

Corral-Martínez

et al. 2016

2016 13th International Conference on Power Electronics (CIEP)

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Considerations on Practical Implementation of Current Source Mode Single-Inductor Multiple-Output LED Driver

Tetervenoks,

Galkin,

Bubovich

2023

Electronics

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There are many possible LED lighting applications where separate regulation of the LED current (luminous flux) of individual LED strings would be desirable—specialized variable correlated color temperature lights for ambient lighting, decorative lighting, surgical lights, horticultural lights, etc. Separate regulation of the current or light flux of individual LED strings is associated with a known problem: the necessity of using a controllable LED driver for each string, which increases the total component count, overall system complexity and costs. One of the possible solutions—a current source mode single-inductor multiple-output LED driver—was discussed in previous different papers. However, the practical implementation of this solution was not discussed in detail. This article aims to correct this omission.

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Power-transfer of isolated converter with integrated power sharing for LED-lighting system dependent on transformer coupling

Cited by 3 publications

References 8 publications

Analysis and design of a multi‐channel constant current LED driver based on DC current bus distributed power system structure

Analysis and design of a multi‐channel constant current LED driver based on DC current bus distributed power system structure

Simulation of simple capacitive-isolated LED drivers

Considerations on Practical Implementation of Current Source Mode Single-Inductor Multiple-Output LED Driver

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