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. 29, 2008
Filed:
Nov. 29, 2004
Pi-fen Chen, Hsin-Chu, TW;
Pi-Fen Chen, Hsin-Chu, TW;
Mediatek Incorporation, Hsin-Chu Hsien, TW;
Abstract
The present invention provides a battery charger and a method for preventing an overshoot charging current during a mode transition. The battery charger includes a charging regulation circuit for outputting a charging current whose amount is regulated based on a regulation signal at a control terminal, a first current sensing unit for sensing a current level and outputting an error signal based on both the current level and a first reference signal, an operational amplifier for generating the regulation signal, and a reference voltage generator which includes an ADC for converting the error signal outputted by the current sensing unit to a digital signal, and a DAC for converting the digital signal to a reference voltage.