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:
Mar. 22, 2022
Filed:
Feb. 12, 2020
Nuvoton Technology Corporation, Hsinchu, TW;
Chang-Xian Wu, San Jose, CA (US);
Bal S. Sandhu, Fremont, CA (US);
NUVOTON TECHNOLOGY CORPORATION, Hsinchu, TW;
Abstract
An integrated circuit includes a current detection circuit configured for coupling to an output terminal of a voltage regulator, the output terminal providing a total current that is divided into a load current to a load device and a feedback current for providing a feedback signal to the voltage regulator. The current detection circuit includes a current sampling circuit and a current comparator circuit. The current sampling circuit provides a first current that is proportional to the total current, a second current that is proportional to the feedback current, and a third current that is proportional to the load current. The current comparator circuit is configured to compare the third current with a threshold current, and output a detection signal that indicates whether the third current matches the threshold current, thereby indicating a target load device is detected.