Constant-Current LEDs driver based on DC-DC buck converter with dimming capability

Mrabet, Brahim; Chammam, Abdeljelil; Nsibi, Walid

doi:10.1109/energycon48941.2020.9236432

Cited by 1 publication

(2 citation statements)

References 8 publications

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“…The duty cycle at which the converter will be operating is determined by Equation (6). Subsequently, it is possible to calculate the value of the LED resistance from Ohm's law:…”

Section: Analysis Of the Equation For Buck Converter With Led Loadmentioning

confidence: 99%

“…However, it is common that the design of these topologies is based on the consideration of the LED as a resistive load, as is mentioned in [3][4][5]. This is not entirely correct, because it is assumed that the voltage and current ripples in the LED are the same, which is false due to the characteristics of the device itself, which leads to an inaccurate design [6].…”

Section: Introductionmentioning

confidence: 99%

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Assessment of the Current and Voltage Ripples of a Buck Converter as a Driver for LEDs Using a Non-Resistive Model

Alvarado-Maldonado,

Ponce-Silva,

Olivar-Castellanos

2023

Eng

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The main contribution of this paper is the assets of the current and voltage ripples in a buck converter with an LED load. The results indicate that the ripples are different and that it is possible to reduce the passive filter concerning the model of the LED as a simple resistance. The paper presents the design and simulation of a buck converter as a power supply for an LED lamp. Modeling the LED as a resistor and a voltage source (SVRM), the equations to calculate the components of the circuit using the SVRM model are presented, where the Fourier series and phasors are used to calculate the output filter. The equations are validated with SPICE simulations. The results indicate that the SVRM model for the LED load affects the calculation of the output filter of the buck converter as well as the voltage and current ripples, making it a more precise design alternative to the proposed development.

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“…The duty cycle at which the converter will be operating is determined by Equation (6). Subsequently, it is possible to calculate the value of the LED resistance from Ohm's law:…”

Section: Analysis Of the Equation For Buck Converter With Led Loadmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Assessment of the Current and Voltage Ripples of a Buck Converter as a Driver for LEDs Using a Non-Resistive Model

Alvarado-Maldonado,

Ponce-Silva,

Olivar-Castellanos

2023

Eng

View full text Add to dashboard Cite

show abstract

Constant-Current LEDs driver based on DC-DC buck converter with dimming capability

Cited by 1 publication

References 8 publications

Assessment of the Current and Voltage Ripples of a Buck Converter as a Driver for LEDs Using a Non-Resistive Model

Assessment of the Current and Voltage Ripples of a Buck Converter as a Driver for LEDs Using a Non-Resistive Model

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