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. 22, 2009
Filed:
Nov. 18, 2005
Chun LU, San Jose, CA (US);
You-yuh Shyr, San Jose, CA (US);
Alexandru Hartular, San Jose, CA (US);
Constantin Bucur, Santa Clara, CA (US);
Chun Lu, San Jose, CA (US);
You-Yuh Shyr, San Jose, CA (US);
Alexandru Hartular, San Jose, CA (US);
Constantin Bucur, Santa Clara, CA (US);
O2Micro International Limited, Georgetown, Grand Cayman, KY;
Abstract
A current mode charger controller for controlling a DC to DC converter. The current mode charger may include a first error amplifier having an output coupled to a common node. The first error amplifier may be configured to compare a first signal representative of a charging current provided to a rechargeable battery with a maximum charging current and provide a current control signal in response to the comparison. The current mode charger controller may further include an internal compensation network coupled to the common node, and a comparator configured to compare an inductor current signal representative of an inductor current through an inductor of the DC to DC converter with a compensation signal. The need for any external compensation for the current mode charger controller may be eliminated.