Novel Pulsating-DC High-Voltage Linear Driving Scheme for GaN LED General Lighting

Article Engineering, Electrical & Electronic

A Soft-Switching Interleaved Buck-Boost LED Driver With Coupled Inductor

Yao-Ching Hsieh et al.

Summary: This article introduces a novel dc-dc LED driver utilizing an interleaved converter, achieving zero-voltage switching with coupled inductors and high efficiency. Experimental results demonstrate that all semiconductor devices operate under ZVS or ZCS conditions, with a measured circuit efficiency as high as 95.0%.

IEEE TRANSACTIONS ON POWER ELECTRONICS (2022)

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Article Engineering, Biomedical

LED photobiomodulation therapy combined with biomaterial as a scaffold promotes better bone quality in the dental alveolus in an experimental extraction model

Vanessa Dalapria et al.

Summary: The study found that photobiomodulation combined with biomaterial improved bone quality and formation in the dental alveolus of Wistar rats, reducing bone degeneration. LED may be an important therapy to combine with biomaterials to promote bone healing.

LASERS IN MEDICAL SCIENCE (2022)

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Article Computer Science, Information Systems

Hybrid Modulated DCDC Boost Converter for Wearable Devices

Tong Li et al.

Summary: This study proposes a DCDC boost converter with hybrid modulation, which can achieve high efficiency over a wide range of load currents. The converter switches between different modulation modes automatically based on the load current, without the need for an additional mode selection module.

ELECTRONICS (2022)

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Article Computer Science, Information Systems

EMC Analysis of the Inverting Boost/Buck Converter Topology

Daniel Kircher et al.

Summary: This paper presents the analysis of electromagnetic compatibility (EMC) for an inverting buck/boost converter. A SPICE model was developed to analyze the EMC properties of the circuit and two EMI-relevant resonances were observed depending on the state of the switch. The simulations were validated with measurements using a circuit designed from discrete components and commercially available converters. The EMC properties of the tested converters were similar to those of the general model.

ELECTRONICS (2022)

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Article Optics

Monolithically integrated voltage-controlled MOSFET-LED device based on a GaN-on-silicon LED epitaxial wafer

Jiabin Yan et al.

Summary: This study presents a novel monolithically integrated voltage-controlled metal-oxide-semiconductor field effect transistor (MOSFET)-LED device with good dimming and switching capabilities, achieved without external metal interconnection. The innovative structure and fabrication process simplify the device structure and production.

OPTICS LETTERS (2021)

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Article Engineering, Electrical & Electronic

Preemphasis Control in Switched-Mode Power Converter for Energy-Efficient Wide Bandwidth Visible Light Communication

Lucas Teixeira et al.

Summary: This article presents an analysis of a preemphasis technique to overcome the low bandwidth constraint of light-emitting diode (LED) drivers in visible light communication (VLC) systems. The technique uses a preemphasis filter to provide wider bandwidth for communication, significantly increasing efficiency and data rates.

IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS (2021)

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Article Optics

Unidirectional-emitting GaN-based micro-LED for 3D display

Jinpeng Huang et al.

Summary: This study proposes a single-chip micro-LED display technology with unidirectional emission through the integration of a resonant cavity and metasurface, which can achieve efficient naked-eye 3D display with a wide viewing angle and multiple viewpoints. The research promotes the application of GaN-based micro-LEDs in displays, especially in 3D displays.

OPTICS LETTERS (2021)

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Proceedings Paper Computer Science, Artificial Intelligence