A GaN-Based Synchronous Buck Converter for High Power Laser Diode Drive Applications

Ugur, Abdulkerim; Yılmaz, Murat

doi:10.17694/bajece.402018

Cited by 4 publications

(1 citation statement)

References 8 publications

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“…The absence of linear stages reduced power loss. A GaN-based synchronous buck converter and a Si-based equivalent were studied in [ 17 ] for the GaN’s application in high-power LDDs. Losses were reduced by optimizing the dead-time, yielding highly promising results at a 700 kHz switching frequency in a 11 A, 300 W prototype.…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of a Power Semiconductor-Based Switching Mode Laser Diode Driver

Ma,

Zhang

2023

Micromachines

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Fiber lasers are commonly used in many industrial applications, such as cutting, welding, marking, and additive manufacturing. In a fiber laser system, the driver of a pumping source using a laser diode (LD) module and its dynamic control capability directly affect the performance of the fiber laser system. The commercial design of pumping source drivers for high-power fiber lasers is mainly based on a linear-type DC power supply, which has two major drawbacks, i.e., lower efficiency and bulk. In this regard, this paper proposes for the first time a new design approach with a programmable switching mode laser diode driver using a power semiconductor device (PSD)-based full-bridge phase-shifted (FB-PS) DC-DC converter for driving a 200 W optical power laser diode module. In this paper, the characteristics of a laser diode module and the system configuration of the proposed laser diode driver are first introduced. Then, a current control scheme using the concept of phase angle shifting to achieve a fast dynamic current tracking feature is explained. The proposed current control technique with a fully digital control scheme is then addressed. Next, dynamic mathematical models of the laser diode driver system and controllers are derived, and the quantitative design detail of the controller is presented. To confirm the correctness of the proposed control scheme, a simulation study on a typical control case is performed in PSIM 9.1 software environment. To verify the effectiveness of the proposed LD driver, a digital signal processor is then used as the control core to construct a hardware prototype implementation for performing experimental tests. Results obtained from simulation and hardware tests show highly satisfactory driving performances in the laser diode’s output current command tracking control.

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Section: Introductionmentioning

confidence: 99%

Design and Implementation of a Power Semiconductor-Based Switching Mode Laser Diode Driver

Ma,

Zhang

2023

Micromachines

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Dead-Time Evaluation With Switching Frequency for GaN-Based Non-Inverting Buck-Boost DC–DC Converter Using FPGA-Based High-Frequency Control

Tripathi

2024

IEEE J. Emerg. Sel. Topics Power Electron.

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The distinctive characteristics, such as fast switching and higher power density of gallium nitride (GaN) power semiconductor devices, are fascinating for power electronic applications. That makes it suitable for achieving high efficiency at high switching frequency operation. However, the control at higher switching frequency operation and evaluation of dead time is pivotal to achieving it. This paper presents the GaN-based noninverting buck-boost (NIBB) dc-dc converter for high-frequency and high-efficiency operation. The feedback control was designed and implemented using FPGA for the operation of the converter at a switching frequency of 500kHz and 800kHz under different operating load conditions. Furthermore, the dead time evaluated corresponds to switching frequencies and load conditions. The PCB layout was designed to develop an experimental prototype of the NIBB converter developed using the LMG5200 GaN halfbridge chip (80V, 10A). The converter is tested for the 48V-48V operation considering the LED applications with a one-to-one voltage ratio, and a Pareto front curve is given for the 250kHz, 500kHz, 800kHz and 1MHz switching frequency.

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High-Frequency Pulsed Laser Driver Using Complementary GaN HEMTs

Liu,

Lin,

Kuo

et al. 2025

IEEE Trans. Power Electron.

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A GaN-Based Synchronous Buck Converter for High Power Laser Diode Drive Applications

Cited by 4 publications

References 8 publications

Design and Implementation of a Power Semiconductor-Based Switching Mode Laser Diode Driver

Design and Implementation of a Power Semiconductor-Based Switching Mode Laser Diode Driver

Dead-Time Evaluation With Switching Frequency for GaN-Based Non-Inverting Buck-Boost DC–DC Converter Using FPGA-Based High-Frequency Control

High-Frequency Pulsed Laser Driver Using Complementary GaN HEMTs

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