High frequency half-bridge converter using multilayered coreless Printed Circuit Board step-down power transformer

Majid, Abdul; Kotte, Hari Babu; Saleem, Jawad; Ambatipudi, Radhika; Haller, Stefan; Bertilsson, Kent

doi:10.1109/icpe.2011.5944712

Cited by 11 publications

(4 citation statements)

References 2 publications

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“…The primary and secondary windings are fabricated using the two copper layers of a double-layer PCB [ 58 , 59 , 60 , 61 , 62 , 63 ], although there are developments using multiple layers (four layers) PCBs [ 56 , 64 ]. In the first case, the FR4 layer offers an electrical isolation ranging between 15 and 40 kV.…”

Section: Printed Circuit Boards For Electronics Sensors and Actuatorsmentioning

confidence: 99%

“…Investigations into the use of coreless PCB-based transformers for MOSFET/IGBT gate drive circuits are reported in [ 61 ]. Finally, a half bridge DC-DC converter for high frequency applications is developed using a step-down power coreless transformer built with a four-layer PCB [ 64 ]. The devices are based on a copper coil fabricated using copper layers of the PCB substrate.…”

Section: Printed Circuit Boards For Electronics Sensors and Actuatorsmentioning

confidence: 99%

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Printed Circuit Boards: The Layers’ Functions for Electronic and Biomedical Engineering

Perdigones

Quero

2022

Micromachines

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This paper describes the fabrication opportunities that Printed Circuit Boards (PCBs) offer for electronic and biomedical engineering. Historically, PCB substrates have been used to support the components of the electronic devices, linking them using copper lines, and providing input and output pads to connect the rest of the system. In addition, this kind of substrate is an emerging material for biomedical engineering thanks to its many interesting characteristics, such as its commercial availability at a low cost with very good tolerance and versatility, due to its multilayer characteristics; that is, the possibility of using several metals and substrate layers. The alternative uses of copper, gold, Flame Retardant 4 (FR4) and silver layers, together with the use of vias, solder masks and a rigid and flexible substrate, are noted. Among other uses, these characteristics have been using to develop many sensors, biosensors and actuators, and PCB-based lab-on chips; for example, deoxyribonucleic acid (DNA) amplification devices for Polymerase Chain Reaction (PCR). In addition, several applications of these devices are going to be noted in this paper, and two tables summarizing the layers’ functions are included in the discussion: the first one for metallic layers, and the second one for the vias, solder mask, flexible and rigid substrate functions.

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Section: Printed Circuit Boards For Electronics Sensors and Actuatorsmentioning

confidence: 99%

Section: Printed Circuit Boards For Electronics Sensors and Actuatorsmentioning

confidence: 99%

Printed Circuit Boards: The Layers’ Functions for Electronic and Biomedical Engineering

Perdigones

Quero

2022

Micromachines

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“…The spiral winding transformers based on printing technology are widely concerned and at recent time relevant researches focus on micro transformer on chip [2,3] and miniature transformers on PCB [4,5] .…”

Section: Introductionmentioning

confidence: 99%

PCB Spiral Winding Transformer Design

Yaokang¹,

Li²,

Wu³

2017

The 5th International Conference on Advanced Computer Science Applications and Technologies (ACSAT 2017)

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The present article puts forward a mathematical model for spiral windings transformer based on the PCB technique and the coils is equivalent to the concentric rings. Formulas for calculating the mutual inductance between two parallel rings are derived from Neumann formula and three simplified formulas are obtained for three special circumstances, i.e. two coils are coaxial but in different planes, in the same plain and concentric, and complete coincidence. Then the self and mutual inductances of the spiral windings are calculated. Base on theoretical calculation, the spiral winding specifications are analyzed including turns of windings, the distance between turns and between layers, the number of layers, the relationship of those between inductances, coupling coefficient.The key points relating spiral transformer design are summarized. Finally, the PCB spiral transformer electrical model is established based on the ideal transformer and practical samples are produced to verify the accuracy of the formulas and the electrical model. The theoretical formulas and the electrical model derived are suitable for circuit designs in practice.

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“…The development of emerging semiconductor devices, like Cool MOS, GaN and SiC power MOSFETs, and high frequency multilayered PCB power transformers have made it possible to design the compact, high frequency and power efficient isolated converters. Using these new power MOSFETs and multilayered PCB power transformers the power converters are designed in the switching frequency range of 2-4 MHz and tested output power level up to 40 W [1]- [4]. It is very important to analyze the EMI generated by these converters and develop them according to Electro Magnetic Compatibility (EMC) standards.…”

Section: Introductionmentioning

confidence: 99%

Design and implementation of EMI filter for high frequency (MHz) power converters

Majid

Saleem

Kotte

et al. 2012

International Symposium on Electromagnetic Compatibility - EMC EUROPE

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Abstract-The fabrication of emerging power semiconductor devices and high frequency PCB power transformers has made it possible to design the power converters in MHz switching frequency range. However, the higher switching frequency, di/dt loops and dv/dt nodes in power stages of these converters generate higher order harmonics which causes Electro Magnetic Interference (EMI). It is commonly believed that the EMI has worst affect in the converters switching in MHz frequency range than the converters operating below 150 kHz. Thus, it is important research direction to investigate the consequences of implementing a line filter to suppress the conducted EMI in high frequency power converters. In this paper, the measurements, and analysis of the conducted EMI in emerging power converters, switching in MHz frequency range, and the design of the filter for its suppression is presented. The design of LISN and its PCB implementation for EMI measurements is presented. The measurement of conducted EMI of a half bridge DC-DC converter switching at 3.45 MHz and the analysis of the frequency spectrum is discussed. The design, PCB implementation and characterization of the EMI filter and the measurement of the suppressed conducted noise by applying the filter are also discussed.

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High frequency half-bridge converter using multilayered coreless Printed Circuit Board step-down power transformer

Cited by 11 publications

References 2 publications

Printed Circuit Boards: The Layers’ Functions for Electronic and Biomedical Engineering

Printed Circuit Boards: The Layers’ Functions for Electronic and Biomedical Engineering

PCB Spiral Winding Transformer Design

Design and implementation of EMI filter for high frequency (MHz) power converters

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