A hybrid LED sink driver using a nesting-type switched-inductor/switched-capacitor buck-boost converter

Eguchi, Koichi; Bevrani, Hassan; Shafiee, Qobad; Shibata, Akira; Asadi, Farzin

doi:10.1016/j.egyr.2020.10.040

Cited by 4 publications

(1 citation statement)

References 6 publications

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“…ese techniques are mainly created with the help of circuit elements, including diodes, capacitors, and inductors. e switched capacitors [8,9], the switched inductors [8,10], and the voltage multipliers [11] are among the most important voltage boosting techniques. e use of coupled inductors [12] and multiphase converter topology, the so-called interleaved [13], are some of the most e ective voltage gain boosting techniques that researchers today use frequently in their designs.…”

Section: Introductionmentioning

confidence: 99%

A High Gain DC-DC Converter Based on Coupled Inductor and Switched-Capacitor Cell with Low-Voltage Stress

Fard

Sadeghzadeh

2022

Journal of Electrical and Computer Engineering

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This paper presents a nonisolated ultrahigh step-up DC-DC converter with an interleaved structure that is suitable for high power and voltage applications. In order to increase the voltage gain, the proposed structure uses coupled inductors and switched-capacitor cells. Achieving this goal is accompanied by avoiding the imposition of any extreme duty cycle or high turns ratio to the converter. The current ripple is reduced due to the use of the interleaved structure. Since the voltage stress of the switches is lower than the output voltage, by selecting the low-voltage rated switches and small RDS(on), the conduction losses are reduced. In addition, alleviating the phenomenon of reverse recovery of diodes and creating soft-switching conditions in MOSFETs, which leads to a reduction of switching losses, are other advantages of the proposed converter. Therefore, there is no need to use clamp circuits in the mentioned structure. The experimental results, using a prototype of 350 W-18 V/400 V, verify the effective performance of the proposed converter.

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Section: Introductionmentioning

confidence: 99%

A High Gain DC-DC Converter Based on Coupled Inductor and Switched-Capacitor Cell with Low-Voltage Stress

Fard

Sadeghzadeh

2022

Journal of Electrical and Computer Engineering

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A High Voltage Multiplier Using Stacked Hybrid Cockcroft– Walton/Dickson Multipliers

Eguchi

Nakashima

Ishibashi

et al. 2021

J. Phys.: Conf. Ser.

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Efficient power conversion with four switch soft-switching boost integrated half-bridge dual-output series resonant converter

Kumar,

Patthi,

Prakhya

et al. 2024

J. Eng. Appl. Sci.

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Soft switching reduces voltage and current stress during transitions, smoothing and quieting operations and reducing electromagnetic interference while also increasing efficiency and equipment lifespan. Circuit design, component selection, and switching frequency optimization affect power electronics soft switching. This paper proposes boost integrated half-bridge dual-output series resonant (BIHBDOSR) converter, a novel converter design and control method to increase series resonant converter performance by reducing storage element size, switch count, and switching losses. This methodology relies on soft-switching technologies like zero-voltage switching (ZVS) and zero-current switching (ZCS). These methods use class-D, class-E, series, parallel, and series–parallel resonant converter circuits to increase efficiency and minimize component stress. The proposed converter is ideal for constant voltage, constant power, and current-controlled loads with the output voltage being regulated by a closed-loop PI controller. The output voltages for two loads in the simulation depart from reference values. V01 changes from 14 to 20 V and V02 from 18 to 15 V at 300 ms owing to switching variances. The proposed converter utilizes gate driver circuits, resonant tank circuit, current sensor, FPGA board for closed-loop control, and current sensor for stability, ensuring converter stability. The proposed converter closed-loop control method modifies PWM signals to regulate both loads independently and ensure steady output voltage. Additionally, to validate the effectiveness of proposed converter, a 50-W driver circuit is designed, delivering two independent outputs of 20 W and 30 W. Frequency modulation (FM) and duty cycle control methods are employed to obtain the desired outputs.

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A hybrid LED sink driver using a nesting-type switched-inductor/switched-capacitor buck-boost converter

Cited by 4 publications

References 6 publications

A High Gain DC-DC Converter Based on Coupled Inductor and Switched-Capacitor Cell with Low-Voltage Stress

A High Gain DC-DC Converter Based on Coupled Inductor and Switched-Capacitor Cell with Low-Voltage Stress

A High Voltage Multiplier Using Stacked Hybrid Cockcroft– Walton/Dickson Multipliers

Efficient power conversion with four switch soft-switching boost integrated half-bridge dual-output series resonant converter

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