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:
Sep. 17, 2019
Filed:
Nov. 07, 2018
Nxp B.v., Eindhoven, NL;
Anu Mathew, Chandler, AZ (US);
Abhijeet Chandrakant Kulkarni, Chandler, AZ (US);
Siamak Delshadpour, Phoenix, CA (US);
NXP B.V., Eindhoven, NL;
Abstract
A circuit for detecting charger connection through a universal serial bus (UBS) connector is disclosed. The circuit includes a comparator having a first input coupled to a fixed voltage reference and a second input coupled to D+ pin of the USB connector, a voltage controlled current source (VCCS) coupled having a first terminal coupled to a supply and a second terminal coupled to the D+ pin and a resistor coupled between the first terminal and the second terminal of the VCCS. The VCCS is configured to bring voltage at the D+ pin within a preselected voltage range at the D+ pin when the voltage at the D+ pin varies beyond the preselected voltage range.