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:
Sep. 07, 2010
Filed:
Mar. 25, 2008
Constantin Bucur, Santa Clara, CA (US);
Vlad Mihail Popescu-stanesti, San Jose, CA (US);
Marian Niculae, San Jose, CA (US);
Daryl Nees, San Jose, CA (US);
Constantin Bucur, Santa Clara, CA (US);
Vlad Mihail Popescu-Stanesti, San Jose, CA (US);
Marian Niculae, San Jose, CA (US);
Daryl Nees, San Jose, CA (US);
O2Micro International Limited, Georgetown, Grand Cayman, KY;
Abstract
A power supply topology according to one embodiment includes a first path coupled to a controllable DC power source, a second path coupled to a rechargeable battery, and a third path coupled to a system load, the three paths coupled to a common node. The topology may further include a unidirectional switch coupled to the first path and a selectively unidirectional switch coupled to the second path. The topology may further include a power management control circuit including a wake up circuit having a comparison circuit and an output decision circuit. Of course, many alternatives, variations, and modifications are possible without departing from this embodiment.