NDLI: A novel silicon-embedded coreless transformer for isolated DC-DC converter application

Content Provider	IEEE Xplore Digital Library
Author	Rongxiang Wu Sin, J.K.O. Hui, S.Y.
Copyright Year	2011
Description	Author affiliation: Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, China (Hui, S.Y.) \|\| Dept. of Electron. & Comput. Eng., Hong Kong Univ. of Sci. & Technol., Kowloon, China (Rongxiang Wu; Sin, J.K.O.)
Abstract	In this paper, a novel silicon-embedded coreless transformer (SECT) is proposed and demonstrated for isolated dc-dc converter applications. By embedding two interleaved thick Cu coils in the bottom layer of the Si substrate, the designed 2 $mm^{2}$ SECT can achieve a maximum transformer efficiency of 85% at 50 MHz. Compared to the on-silicon coreless power transformer reported earlier for 0.5 W isolated dc-dc conversion at 170 MHz with a transformer efficiency of over 70%, the much lower operating frequency of the SECT allows the power losses of the power MOSFETs and Schottky diodes to be reduced by around 50%, leading to a converter loss reduction of 38%. Since only 4 vias are opened at the top layer of the substrate, most of the top layer of the substrate can be used for power IC implementation to achieve efficient monolithic integration. Experimental results show that the SECT provides a maximum transformer efficiency of 73% at 50 MHz, which is lower than expected and due to the non-optimized isolation oxide used.
Sponsorship	IEEE Electron Devices Soc.
Starting Page	352
Ending Page	355
File Size	433556
Page Count	4
File Format	PDF
ISBN	9781424484256
ISSN	19460201
e-ISBN	9781424484249
DOI	10.1109/ISPSD.2011.5890863
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-05-23
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power transformers Coils Transformer cores Inductance Copper Q factor Silicon
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Thin type DC/DC converter using a coreless wire transformer

A new multi-polar flat transformer and its application to a planar type DC/DC converter

10kV SiC-based isolated DC-DC converter for medium voltage-connected Solid-State Transformers

Novel Silicon-Embedded Coreless Transformer for On-Chip Isolated Signal Transfer

High speed cascode flyback converter using multilayered coreless printed circuit board (PCB) step-down power transformer

Transformer design as a key for efficiency optimization

Design and optimization of a high insulation voltage DC/DC power supply with coreless PCB transformer

Design and analysis of a coreless flyback converter with a planar printed-circuit-board transformer

Design of Imperfectly Coupled Power Transformers for DC to DC Conversion

A novel silicon-embedded coreless transformer for isolated DC-DC converter application

Similar Documents

Thin type DC/DC converter using a coreless wire transformer

A new multi-polar flat transformer and its application to a planar type DC/DC converter

10kV SiC-based isolated DC-DC converter for medium voltage-connected Solid-State Transformers

Novel Silicon-Embedded Coreless Transformer for On-Chip Isolated Signal Transfer

High speed cascode flyback converter using multilayered coreless printed circuit board (PCB) step-down power transformer

Transformer design as a key for efficiency optimization

Design and optimization of a high insulation voltage DC/DC power supply with coreless PCB transformer

Design and analysis of a coreless flyback converter with a planar printed-circuit-board transformer

Design of Imperfectly Coupled Power Transformers for DC to DC Conversion

A novel silicon-embedded coreless transformer for isolated DC-DC converter application