Independently Controllable Dual-Output Half-Bridge Series Resonant Converter for LED Driver Application

Kolla, Hemasundara Rao; Vishwanathan, N.; Murthy, Bhagwan K.

doi:10.1109/jestpe.2021.3120879

Cited by 16 publications

(7 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This study provides a comparison of the number of components, soft-switching capability, output load, and efficiency of these drivers, both domestically and internationally, as shown in Table 2. Notably, the input voltage of references [6,12,15] and the LED driver in this study is 48 V. Upon comparing these parameters, it becomes evident that the LED driver proposed in this paper has fewer switching devices and can accommodate more output loads. As a result, the entire system boasts a higher power density and has the capability to adjust the output current in proportion to the upper and lower current-sharing output units, offering superior soft-switching conditions and overall high efficiency.…”

Section: Discussionmentioning

confidence: 91%

“…Thus, the proposed cooperative control strategy achieves wide dimming range operation, but with reduced overall efficiency due to the cascade structure. Literature [15] puts forth a three-switch, double half-bridge, double-output LED driver, utilizing asymmetric duty cycle control to adjust output current but encountering the issue of diode inability to achieve soft switching, leading to significant diode conduction losses.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Soft-Switching Proportional Dimming LED Driver Based on Switched Capacitor

Zhang,

Jiang,

Xie

2024

Energies

View full text Add to dashboard Cite

This paper proposes a switched capacitor-based soft-switching proportional dimming LED driver to address color-mixing LED applications. The driver utilizes a half-bridge switch structure and incorporates a switched capacitor to regulate the dual resonant network. This configuration facilitates current sharing across each resonant network and enables fixed proportion dimming between them. The common inductance leveraged in this design results in fewer switching devices, thereby enhancing efficiency. Furthermore, all switches and diodes achieve soft switching, contributing to high efficiency. Finally, this paper built a 19 W experimental prototype, and the maximum efficiency reached 95.56%, which verified the correctness and feasibility of the driver.

show abstract

Section: Discussionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

A Soft-Switching Proportional Dimming LED Driver Based on Switched Capacitor

Zhang,

Jiang,

Xie

2024

Energies

View full text Add to dashboard Cite

show abstract

“…As multi-loads are used to validate the system, the independent current control is deployed for input voltage variations. A hybrid resonant LED driver with an LCC resonant converter is proposed for automotive LED applications (Kolla et al, 2022). The proposed topology provides the loadindependent output current characteristics for the variations in the input voltage.…”

Section: Single-stage Converter Topologiesmentioning

confidence: 99%

A comprehensive review on various non-isolated power converter topologies for a light-emitting diode driver

et al. 2022

View full text Add to dashboard Cite

Light-emitting diode (LED) lighting applications aided by an electronic power control have become very attractive in the recent years. For LED lighting applications, it is essential to design a converter with single/multi-output for handling multiple loads. As the LED load is more sensitive to the change in input/converter parameters, it is necessary to regulate the current concerning the design specifications. In this paper, several LED topologies are reviewed with a focus on power density, single/multi-load operation, size, and reliability. Several converter topologies are reviewed and compared in terms of power rating, number of semiconductor switches, isolation, and efficiency. Various modulation techniques used for dimming control are described in brief. The salient features of each converter topology are discussed with the power rating and application for which the topology can be preferred. So, the selection of the power factor correction (PFC) and low source side harmonics converter topology is presented. This paper will be helpful to the researchers who are working on the development of LED drivers.

show abstract

“…A two-output and independently controlled half-bridge resonant LED driver circuit is presented. 27 But the implementation of switching logic for independent operation is very difficult. A half-bridge converter using an LC resonant circuit 28 is addressed to power identical lamps with independent dimming.…”

Section: Introductionmentioning

confidence: 99%

“…However, it has more component count per lamp, which will increase the system's cost and size. A two‐output and independently controlled half‐bridge resonant LED driver circuit is presented 27 . But the implementation of switching logic for independent operation is very difficult.…”

Section: Introductionmentioning

confidence: 99%

Soft‐switched full‐bridge converter for LED lighting applications with reduced switch current

Patakamoori

Udumula

Nizami

et al. 2022

Circuit Theory & Apps

View full text Add to dashboard Cite

Lighting systems using light-emitting diode (LED) have drawn significant attention across the world. This is due to their promising features such as high energy efficiency, reduced greenhouse gas emission, and eco-friendly nature. However, these systems require constant current regulators to provide constant illumination. This article proposes a soft-switched full-bridge LED driver circuit for dc-grid applications with dimming control operation. The circuit consists of a softswitched full-bridge converter to power different LED lamps with reduced device count from dc-grid voltage. The semiconductor switches of the full-bridge converter conduct a small current during on time due to interleaved inductor and equal current sharing of lamp-2 and lamp-3. This feature reduces the conduction losses. In addition, the proposed converter yields less component count per lamp, dimming operation through on-off control and zero voltage switching, which results in low switching losses. The detailed steady-state analysis of the proposed converter for dc-grid applications with dimming control operation is presented in this work. The performance of the proposed converter is compared with other similar topologies available in the recent literature. Numerical simulations and real-time experimental validations are conducted to evaluate the steady-state performance of the proposed converter topology for LED applications, driving multiple lamp loads from dc-grid. It has been established that the efficiency of the proposed full-bridge converter is 97.52% at the rated power. K E Y W O R D S light-emitting diodes and dimming control, resonant converters, zero voltage switching

show abstract

Independently Controllable Dual-Output Half-Bridge Series Resonant Converter for LED Driver Application

Cited by 16 publications

References 26 publications

A Soft-Switching Proportional Dimming LED Driver Based on Switched Capacitor

A Soft-Switching Proportional Dimming LED Driver Based on Switched Capacitor

A comprehensive review on various non-isolated power converter topologies for a light-emitting diode driver

Soft‐switched full‐bridge converter for LED lighting applications with reduced switch current

Contact Info

Product

Resources

About