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논문 기본 정보

자료유형
학술대회자료
저자정보
저널정보
전력전자학회 ICPE(ISPE)논문집 2001년 ICPE논문집
발행연도
2001.10
수록면
1 - 6 (6page)

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In this article, the fundamental concept, characteristics and application potentials of coreless printed-circuit-board (PCB) transformers are described. Coreless PCB transformers do not have the limitations associated with magnetic cores, such as the frequency limitation, magnetic saturation and core losses. In addition, they eliminate the manual winding process and its associated problems, including labor cost, reliability problems and difficulties in ensuring transformer quality in the manufacturing process The parameters of the printed windings can be precisely controlled in modern PCB technology Because of the drastic reduction in the vertical dimension, coreless PCB transformers can achieve high power density and are suitable for applications in which stringent height requirements for the circuits have to be met. A transformer's power density of 24W/cm2 has been reported in a power conversion application. When used in an isolation amplifier application, coreless PCB transformers tested so far enable the amplifier to achieve a remarkable linear frequency range of 1MHz, which is almost eight times higher than the frequency range of 120 kHz in existing Integrated-Circuit products. PCB materials offer extremely high isolation voltage, typically from 15kV to 40kV, which is higher than many other isolation means such as optocouplers. It is envisaged that coreless PCB transformers can replace traditional core-based transformers in some industrial applications Their application potentials deserve more attention and exploration.

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Abstract

1.Introduction

2.Basic Structure and Equivalent Circuit of Coreless PCB Transformers

3.Characteristics of Coreless PCB Transformers

4.Transformers for Signal Transfer and Power Transfer

5.Some Application Examples

6.Conclusions

References

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