Microfabricated coupled inductors for integrated power converters

Satish Prabhakaran; Terence O'Donnell; Charles R. Sullivan; Magali Brunet; Saibal Roy; Cian O'Mathuna

doi:10.1016/j.jmmm.2004.11.433

Microfabricated coupled inductors for integrated power converters

Satish Prabhakaran
, Terence O'Donnell
, Charles R. Sullivan
, Magali Brunet
, Saibal Roy
, Cian O'Mathuna

Dartmouth College

Research output: Contribution to journal › Article › peer-review

Abstract

A microfabricated coupled inductor for low-voltage, high-current power converters is presented. The aim is to miniaturize such converters and improve their transient response using high-performance microfabricated inductors. These inductors have high power density enabled by a high-flux-density magnetic material (NiFe) and have the potential for integration with silicon circuits. A four-phase magnetically coupled structure with 14 nH of inductance per phase has been fabricated on silicon and implemented in a 5 MHz, 5-1 V, 4 A DC-DC converter. The coupled structure consists of four adjacent U-shaped copper windings sandwiched between two layers of NiFe. Electrical measurements match well with predictions for the converter.

Original language	English
Pages (from-to)	1343-1346
Number of pages	4
Journal	Journal of Magnetism and Magnetic Materials
Volume	290-291 PART 2
DOIs	https://doi.org/10.1016/j.jmmm.2004.11.433
Publication status	Published - Apr 2005

Keywords

Micro inductor
NiFe
Power converter
Thin films laminated

Access to Document

10.1016/j.jmmm.2004.11.433

Cite this

@article{0993d403d8d94c8bbe4e730d6093f05b,

title = "Microfabricated coupled inductors for integrated power converters",

abstract = "A microfabricated coupled inductor for low-voltage, high-current power converters is presented. The aim is to miniaturize such converters and improve their transient response using high-performance microfabricated inductors. These inductors have high power density enabled by a high-flux-density magnetic material (NiFe) and have the potential for integration with silicon circuits. A four-phase magnetically coupled structure with 14 nH of inductance per phase has been fabricated on silicon and implemented in a 5 MHz, 5-1 V, 4 A DC-DC converter. The coupled structure consists of four adjacent U-shaped copper windings sandwiched between two layers of NiFe. Electrical measurements match well with predictions for the converter.",

keywords = "Micro inductor, NiFe, Power converter, Thin films laminated",

author = "Satish Prabhakaran and Terence O'Donnell and Sullivan, \{Charles R.\} and Magali Brunet and Saibal Roy and Cian O'Mathuna",

year = "2005",

month = apr,

doi = "10.1016/j.jmmm.2004.11.433",

language = "English",

volume = "290-291 PART 2",

pages = "1343--1346",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Microfabricated coupled inductors for integrated power converters

AU - Prabhakaran, Satish

AU - O'Donnell, Terence

AU - Sullivan, Charles R.

AU - Brunet, Magali

AU - Roy, Saibal

AU - O'Mathuna, Cian

PY - 2005/4

Y1 - 2005/4

N2 - A microfabricated coupled inductor for low-voltage, high-current power converters is presented. The aim is to miniaturize such converters and improve their transient response using high-performance microfabricated inductors. These inductors have high power density enabled by a high-flux-density magnetic material (NiFe) and have the potential for integration with silicon circuits. A four-phase magnetically coupled structure with 14 nH of inductance per phase has been fabricated on silicon and implemented in a 5 MHz, 5-1 V, 4 A DC-DC converter. The coupled structure consists of four adjacent U-shaped copper windings sandwiched between two layers of NiFe. Electrical measurements match well with predictions for the converter.

AB - A microfabricated coupled inductor for low-voltage, high-current power converters is presented. The aim is to miniaturize such converters and improve their transient response using high-performance microfabricated inductors. These inductors have high power density enabled by a high-flux-density magnetic material (NiFe) and have the potential for integration with silicon circuits. A four-phase magnetically coupled structure with 14 nH of inductance per phase has been fabricated on silicon and implemented in a 5 MHz, 5-1 V, 4 A DC-DC converter. The coupled structure consists of four adjacent U-shaped copper windings sandwiched between two layers of NiFe. Electrical measurements match well with predictions for the converter.

KW - Micro inductor

KW - NiFe

KW - Power converter

KW - Thin films laminated

UR - https://www.scopus.com/pages/publications/14944379055

U2 - 10.1016/j.jmmm.2004.11.433

DO - 10.1016/j.jmmm.2004.11.433

M3 - Article

AN - SCOPUS:14944379055

SN - 0304-8853

VL - 290-291 PART 2

SP - 1343

EP - 1346

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

ER -

Microfabricated coupled inductors for integrated power converters

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this