Interleaved Flyback DC-DC Converter Design with 350 W Power Output Using LT 3757 in LT Spice

Rahayu, Siti Eka; Firmansyah, Eka; Isnaeni, M

doi:10.1088/1742-6596/824/1/012003

Cited by 3 publications

(4 citation statements)

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“…It is observed that the duty cycle of the signal is direct proportional to the transformation ratio. Moreover, the maximum duty cycle do not provide more than 44% at high frequencies [11].…”

Section: Mofidifed Flyback Converter Circuit Designingmentioning

confidence: 98%

A design of LED driver circuit for reducing production cost in Thailand industry

Lapsongphon

Pullteap

2018

MATEC Web Conf.

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Abstract. In this paper, the designing of a modified flyback converter circuit for 100 Watts LED lighting has been demonstrated. Some important factors, i.e. efficiency (ɛ), power factor (PF), and total harmonic current distortion (THDi), are considered for interpreting the performance of the proposed circuit. A commercial driver circuit which an efficiency of 94% and price of 2,000 THB has, consequently, been employed as a reference circuit. Two experimental setups, performance investigation and cost analysis, have been demonstrated for confirming the concept designed. However, the experimental results shown that an efficiency of the developed driver is 93.93%, while the implementation cost is 1,257 THB respectively. Compared with the reference circuit, we found that the performance of modified flyback circuit is almost equivalent in any parameters, while the cost is cheaper than the reference of 37.15%. This implies that there is a possibility to transfer the knowledge of designing concept to mass production for Thailand industry. In addition, it would thus be reduced the investment cost by the importation driver circuits from other countries and also to support Thailand industry for producing the high quality goods for exporting aboard.

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Section: Mofidifed Flyback Converter Circuit Designingmentioning

confidence: 98%

A design of LED driver circuit for reducing production cost in Thailand industry

Lapsongphon

Pullteap

2018

MATEC Web Conf.

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“…Using a transformer in the switching scheme of a DC-DC converter is a more effective way to provide electrical isolation between the input and output. Since the switching frequency is substantially higher than the frequency of the ac power supply, the transformer can be tiny [9]. A non-ideal flyback converter shown in Figure 1(b) operates in the continues conduction mode (CCM).…”

Section: A Construction Of Ideal and Non-ideal Flyback Dc-dc Convertermentioning

confidence: 99%

“…The advantages of isolated dc-dc converter are the input voltage transient is not transferred to the output, and it produce complete conductivity separation between input and output circuits by operating at a high transformer. Isolated DC to DC converters may be programmed to produce positive or negative output from error margin rails [9]. Based on the previous studies, [3] reported flyback converter design for low power application.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of a Switched-Mode Flyback DC-DC Converter with Influence of Non-Ideal Switching Devices

Kamar,

Azmi,

Isa

2023

IOP Conf. Ser.: Earth Environ. Sci.

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This paper approach for the performance analysis of a dc-dc flyback converter for low power application. Modelling is done with parasitic components for non-ideal flyback converter. Ac and dc input characteristic of the flyback converter are analysed and investigated by PSIM simulations and calculations. The influence of parasitic effects in converter components on input characteristic is studied in continuous conduction mode (CCM). The results of the calculation based on analytical formula and averaged models are in a good accordance with PSIM simulations and calculation. The goal of this project is to compare an ideal and non-ideal condition in order to see the effect on the efficiency and ability of the converter to control the output voltage. The converter is expected to be operated in continuous conduction mode at all time and focus application is low power application that less than 100W.

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“…LTSpice facilitates transformer modelling with a hysteresis model of the magnetic core, leveraging the core's basic hysteresis loop parameters and linear dimensions. [6].…”

Section: Design and Simulation Of Gan Hemt Flyback Convertermentioning

confidence: 99%

Minimizing High-Frequency Switching Losses in Wideband Gan Hemts for Flyback Converters

Arseniuk,

Zinkovskyi

2023

ITS

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Background. In the realm of pulse power supplies, flyback converters play a pivotal role in efficient voltage conversion and providing electrical isolation. Typically, these converters utilize silicon transistors. However, they encounter several issues that hinder their energy efficiency and operational stability. A primary concern is the increase in switching losses at high frequencies. This is attributed to the lower switching speed and higher on-state resistance characteristic of silicon transistors. Such inefficiency leads to substantial power dissipation, thereby reducing overall efficiency. Additionally, the heat generated from these losses necessitates complex temperature control systems, increasing operational burden and affecting the reliability and longevity of the converters. Furthermore, the operational frequency of these converters is limited. While operating at higher frequencies is beneficial for reducing the size of passive components, it exacerbates the problems of switching losses and heat dissipation in silicon transistors. Objective. This article aims to conduct a comprehensive study and optimization of flyback converters based on High Electron Mobility Transistors (HEMT) made of Gallium Nitride (GaN), focusing on minimizing losses in high-frequency switching. The study delves into the intrinsic properties of GaN HEMTs, highlighting their superior characteristics compared to traditional silicon counterparts, and emphasizes the circuit design methods for minimizing losses and their features. Method. The research involved a detailed analysis of the switching losses of GaN HEMTs under high-frequency switching conditions. Using computer simulation models, the study examines the impact of various parameters, such as currents and voltages on the GaN transistor, power dissipation, and the output characteristics of the device with different circuit topologies on the performance and efficiency of switching. Results. The results provide insights into the optimization strategies of topology, particularly the use of transistor gate drivers and snubber circuits, which are crucial for enhancing the overall efficiency and reliability of flyback converters. Conclusions. The article offers an in-depth analysis into optimizing high-frequency flyback converters using GaN HEMTs, providing valuable guidance for devices requiring compact power sources, such as in small aircraft systems and telecommunications networks.

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Interleaved Flyback DC-DC Converter Design with 350 W Power Output Using LT 3757 in LT Spice

Cited by 3 publications

References 0 publications

A design of LED driver circuit for reducing production cost in Thailand industry

A design of LED driver circuit for reducing production cost in Thailand industry

Performance Analysis of a Switched-Mode Flyback DC-DC Converter with Influence of Non-Ideal Switching Devices

Minimizing High-Frequency Switching Losses in Wideband Gan Hemts for Flyback Converters

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