WO1998054733A3 - Low profile pin-less planar magnetic devices and method of making same - Google Patents

Low profile pin-less planar magnetic devices and method of making same Download PDF

Info

Publication number
WO1998054733A3
WO1998054733A3 PCT/US1998/011747 US9811747W WO9854733A3 WO 1998054733 A3 WO1998054733 A3 WO 1998054733A3 US 9811747 W US9811747 W US 9811747W WO 9854733 A3 WO9854733 A3 WO 9854733A3
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic device
coils
low profile
making same
magnetic devices
Prior art date
Application number
PCT/US1998/011747
Other languages
French (fr)
Other versions
WO1998054733A2 (en
Inventor
Gedaly Levin
Original Assignee
Tdk Corp Of America
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tdk Corp Of America filed Critical Tdk Corp Of America
Priority to AU79550/98A priority Critical patent/AU7955098A/en
Publication of WO1998054733A2 publication Critical patent/WO1998054733A2/en
Publication of WO1998054733A3 publication Critical patent/WO1998054733A3/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • H01F27/292—Surface mounted devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/0006—Printed inductances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/0006—Printed inductances
    • H01F17/0013—Printed inductances with stacked layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/041—Printed circuit coils
    • H01F41/042—Printed circuit coils by thin film techniques
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/041—Printed circuit coils
    • H01F41/046—Printed circuit coils structurally combined with ferromagnetic material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
    • H05K1/165—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor incorporating printed inductors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
    • H05K3/403—Edge contacts; Windows or holes in the substrate having plural connections on the walls thereof
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/46—Manufacturing multilayer circuits
    • H05K3/4611—Manufacturing multilayer circuits by laminating two or more circuit boards
    • H05K3/4638—Aligning and fixing the circuit boards before lamination; Detecting or measuring the misalignment after lamination; Aligning external circuit patterns or via connections relative to internal circuits

Abstract

A planar magnetic device (20) is disclosed. The magnetic device has generally spirally-directed planar coils (24) supported on plural substrates (23). The plural substrates are stacked so as to have their respective outer peripheries connected to termination pads which are laterally spaced from the termination pads of other coils, as viewed in a direction perpendicular to the planar coils (24). The inner termination of at least two coils may be interconnected by a plated via to constitute a single winding on plural planes. An exposed portion of the termination pads resides alongside vertical edges of the magnetic device and is electrically connected to a vertical plating (32) which form pin-less terminations of the magnetic device. The magnetic device may include a bevelled portion for orientation of the device in a circuit. A method of manufacturing the magnetic coil device is also disclosed.
PCT/US1998/011747 1997-05-29 1998-05-29 Low profile pin-less planar magnetic devices and method of making same WO1998054733A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU79550/98A AU7955098A (en) 1997-05-29 1998-05-29 Low profile pin-less planar magnetic devices and method of making same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US86545697A 1997-05-29 1997-05-29
US08/865,456 1997-05-29

Publications (2)

Publication Number Publication Date
WO1998054733A2 WO1998054733A2 (en) 1998-12-03
WO1998054733A3 true WO1998054733A3 (en) 1999-05-14

Family

ID=25345549

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/011747 WO1998054733A2 (en) 1997-05-29 1998-05-29 Low profile pin-less planar magnetic devices and method of making same

Country Status (2)

Country Link
AU (1) AU7955098A (en)
WO (1) WO1998054733A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001037323A2 (en) * 1999-11-03 2001-05-25 Hwu R Jennifer Vertical transformer
ITTO20001128A1 (en) * 2000-12-04 2002-06-04 Fiat Ricerche PLANAR INDUCTOR WITH FERROMAGNETIC CORE AND RELATED MANUFACTURING METHOD.
KR20140011693A (en) * 2012-07-18 2014-01-29 삼성전기주식회사 Magnetic substance module for power inductor, power inductor and manufacturing method for the same
WO2015029976A1 (en) * 2013-09-02 2015-03-05 株式会社村田製作所 Electronic component, and common mode choke coil
WO2023232437A1 (en) * 2022-05-30 2023-12-07 Valeo Eautomotive France Sas Planar electrical transformer and assembly

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483499A (en) * 1968-08-08 1969-12-09 Bourns Inc Inductive device
US3765082A (en) * 1972-09-20 1973-10-16 San Fernando Electric Mfg Method of making an inductor chip
US3833872A (en) * 1972-06-13 1974-09-03 I Marcus Microminiature monolithic ferroceramic transformer
JPS58140104A (en) * 1982-02-16 1983-08-19 Olympus Optical Co Ltd Electric coil
JPH0582350A (en) * 1991-09-20 1993-04-02 Murata Mfg Co Ltd Transformer
JPH05258973A (en) * 1992-03-10 1993-10-08 Mitsubishi Electric Corp Thin film inductor element and manufacture thereof
JPH05315152A (en) * 1992-05-01 1993-11-26 Murata Mfg Co Ltd Laminated coil
JPH0669038A (en) * 1992-08-13 1994-03-11 Murata Mfg Co Ltd Chip-shaped coil

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483499A (en) * 1968-08-08 1969-12-09 Bourns Inc Inductive device
US3833872A (en) * 1972-06-13 1974-09-03 I Marcus Microminiature monolithic ferroceramic transformer
US3765082A (en) * 1972-09-20 1973-10-16 San Fernando Electric Mfg Method of making an inductor chip
JPS58140104A (en) * 1982-02-16 1983-08-19 Olympus Optical Co Ltd Electric coil
JPH0582350A (en) * 1991-09-20 1993-04-02 Murata Mfg Co Ltd Transformer
JPH05258973A (en) * 1992-03-10 1993-10-08 Mitsubishi Electric Corp Thin film inductor element and manufacture thereof
JPH05315152A (en) * 1992-05-01 1993-11-26 Murata Mfg Co Ltd Laminated coil
JPH0669038A (en) * 1992-08-13 1994-03-11 Murata Mfg Co Ltd Chip-shaped coil

Also Published As

Publication number Publication date
WO1998054733A2 (en) 1998-12-03
AU7955098A (en) 1998-12-30

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