The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 07, 2022
Filed:
Apr. 08, 2020
Applicant:
The Regents of the University of California, Oakland, CA (US);
Inventors:
Sally Amin, La Jolla, CA (US);
Patrick Mercier, San Diego, CA (US);
Assignee:
The Regents of the University of California, Oakland, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 3/07 (2006.01); H03K 3/356 (2006.01); H02J 7/00 (2006.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
H02M 3/073 (2013.01); H02J 7/007 (2013.01); H03K 3/356113 (2013.01); H01M 10/0525 (2013.01); H02J 2207/20 (2020.01);
Abstract
A DC-DC converter converts voltage from a battery source providing a voltage Vto a lower level. A four-level transistor stack selectively connects an input voltage and flying capacitor voltages to an output inductor. Stress reduction transistors limit the charging of the flying capacitors to V/3. The stress reduction transistors can also limit switching transistor voltages to V/3. Freewheel switches can be used to limit ringing in the output inductor.