High inductance planar transformers

被引：17

作者：

Dezuari, O ^{[1
]}

Gilbert, SE ^{[1
]}

Belloy, E ^{[1
]}

Gijs, MAM ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Inst Microsyst, CH-1015 Lausanne, Switzerland

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2000年 / 81卷 / 1-3期

关键词：

planar transformers; PCB technology; high permeability material; inductance; Vitrovac (R);

D O I：

10.1016/S0924-4247(99)00110-7

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We have developed a new printed circuit board (PCB) technology adapted for the fabrication of ultra-flat microtransformers. The two outer layers of the PCB stack comprise the electrical windings of the inductive devices, while the inner layer is made of a micro-patterned amorphous magnetic ribbon with extremely high relative magnetic permeability (mu(r) approximate to 100,000). The electrical properties of the toroidal microtransformers have been studied as a function of frequency. Inductances were found to be as much as 30 mu H at 1 kHz, a relatively high value compared to microtransformers of similar size. Despite a relatively high leakage flux, the voltage transformation efficiency is measured at 89%. The high performance of these devices is primarily due to the use of the high permeability magnetic core. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：355 / 358

页数：4

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