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:
May. 23, 2017
Filed:
Sep. 11, 2015
Applicant:
Maxim Integrated Products, Inc., San Jose, CA (US);
Inventors:
Shiau Chwun George Pwu, Frisco, TX (US);
Chen-Hsien Hung, Dallas, TX (US);
Matthew Ray Harrington, Carrolton, TX (US);
Assignee:
Maxim Integrated Products, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03B 1/00 (2006.01); H03K 3/00 (2006.01); H03K 17/12 (2006.01); H03K 5/24 (2006.01); H03K 21/40 (2006.01);
U.S. Cl.
CPC ...
H03K 17/122 (2013.01); H03K 5/24 (2013.01); H03K 21/40 (2013.01);
Abstract
A power switch control circuit is provided for power management in one-wire application. The circuit comprises a controllable switch coupled between an input node and an internal power node. A comparator is utilized for power loss sensing to close the switch when necessary to minimize the power loss while the input is low or floating. A watchdog circuit is incorporated within the control circuit to pull down the input node periodically to detect small leakage current when the input node is floating.