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:
Oct. 14, 2025
Filed:
Jul. 26, 2022
Will Semiconductor (Shanghai) Co. Ltd., Shanghai, CN;
Manabu Ishida, Miyagi, JP;
WILL SEMICONDUCTOR (SHANGHAI) CO. LTD., Shanghai, CN;
Abstract
A power supply system includes a regulator, outputting a system voltage; a load, receiving the system voltage to operate; a battery, charged by the system voltage; a charging transistor, receiving the system voltage and controlling a charging current to the battery; and a three-input amplifier, in which three factors including a charging current detection value, a reference charging current, and a reference limit current determined according to a difference between the system voltage and a minimum system voltage are input, and which obtains an output corresponding to a difference between the reference charging current and the charging current detection value when the reference charging current is equal to or less than the reference limit current, and obtains an output corresponding to a difference between the reference limit current and the charging current detection value when the reference charging current exceeds the reference limit current.