Development of an isolated flyback converter employing boundary-mode operation and magnetic flux sensing feedback

This thesis focuses on the marriage of magnetic-flux-sensing feedback and boundary-mode operation in a flyback converter to create a simple, small, low-cost, isolated, and tightly regulated power supply. Although each technique has been implemented before, the marriage of these two concepts is new. The union of these two techniques is powerful in terms of simplifying the overall design. The same signal, the flyback pulse on the bias winding, controls the feedback loop and the turn-on of the switch. In the process of building an isolated power supply, a complete understanding of the benefits and disadvantages of various operational modes along with other design options are explored. The flyback converter was built using discrete parts including op-amps, comparators, and other analog building blocks. The goal was to create a proof of concept board to test the overall effectiveness of the new topology in a simple, quick manner.

Department dc:contributor.department

Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2004

Author dc:creator

• Kenia, Mayur V. (Mayur Vasant), 1981-

Advisor dc:contributor.advisor

• Tony Bonte and David Perreault.

• Electrical Engineering and Computer Science.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

en_US

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/28415

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/28415