Design and Fabrication of a 315 μH Bondwire Micro-Transformer for Ultra-Low Voltage Energy Harvesting

被引：0

作者：

Macrelli, Enrico ^{[1
]}

Wang, Ningning ^{[2
]}

Roy, Saibal ^{[2
]}

Hayes, Michael ^{[2
]}

Paganelli, Rudi Paolo ^{[3
]}

Tartagni, Marco ^{[1
]}

Romani, Aldo ^{[1
]}

机构：

[1] Univ Bologna DEI, Bologna, Italy

[2] Univ Coll Cork, Tyndall Natl Inst, Cork, Ireland

[3] Natl Res Council CNR IEIIT, Bologna, Italy

来源：

2014 DESIGN, AUTOMATION AND TEST IN EUROPE CONFERENCE AND EXHIBITION (DATE) | 2014年

关键词：

bonding wires; bondwire; converter; DC-DC; energy harvesting; ferrite; magnetics; on-chip; PCB; transformer; CHIP;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper presents a design study of a new topology for miniaturized bondwire transformers fabricated and assembled with standard IC bonding wires and toroidal ferrite (Fair-Rite 5975000801) as a magnetic core. The micro-transformer realized on a PCB substrate, enables the build of magnetics on-top-of-chip, thus leading to the design of high power density components. Impedance measurements in a frequency range between 100 kHz to 5 MHz, show that the secondary self-inductance is enhanced from 0.3 mu H with an epoxy core to 315 mu H with the ferrite core. Moreover, the micro-machined ferrite improves the coupling coefficient from 0.1 to 0.9 and increases the effective turns ratio from 0.5 to 35. Finally, a low-voltage IC DC-DC converter solution, with the transformer mounted on-top, is proposed for energy harvesting applications.

引用

页数：4

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