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:
Jul. 12, 2011
Filed:
Oct. 01, 2007
Stefan Maireanu, Sunnyvale, CA (US);
Alex Hartular, San Jose, CA (US);
Chun LU, San Jose, CA (US);
Jianping Xu, Chengdu, CN;
Xinhe Su, Chengdu, CN;
Xiaodong Wang, Chengdu, CN;
Stefan Maireanu, Sunnyvale, CA (US);
Alex Hartular, San Jose, CA (US);
Chun Lu, San Jose, CA (US);
Jianping Xu, Chengdu, CN;
Xinhe Su, Chengdu, CN;
Xiaodong Wang, Chengdu, CN;
O2 Micro, Inc., Santa Clara, CA (US);
Abstract
A power supply system can include a primary power supply coupled to an output, and a secondary power supply coupled to the output. The primary power supply provides power to the output when a voltage level of the secondary power supply is less than a first predetermined level. The secondary power supply provides power to the output when the voltage level of the secondary power supply is greater than the first predetermined level. The secondary power supply not only provides power to the output, but also charges the primary power supply when the voltage level of the secondary power supply is greater than a second predetermined level that is greater than the first predetermined level.