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:
Jun. 02, 2026
Filed:
Feb. 14, 2022
Dialog Semiconductor (Uk) Limited, London, GB;
Arun Sundar, Campbell, CA (US);
Jinseok Park, San Jose, CA (US);
Amit Jain, Dublin, CA (US);
Aravind Mangudi, Gilbert, AZ (US);
RENESAS DESIGN (UK) LIMITED, , GB;
Abstract
A battery charger is provided that includes a switching power converter that regulates an output voltage on an output voltage rail. A transistor couples between the output voltage rail and a rechargeable battery for a system. An error amplifier controls the conductance of the transistor based upon a difference between a battery current conducted by the transistor to the battery and a battery current threshold. A pulse width modulator controls a duty cycle of the switching power converter responsive to a selected error signal from a group of error signals. Based upon which error signal is selected for the duty cycle control, the battery charger either increases or decreases the battery current threshold to assist in keeping the output voltage above a minimum system voltage for the system.