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.

Date of Patent:
Dec. 26, 2023

Filed:

Dec. 02, 2021
Applicant:

Cirrus Logic International Semiconductor Ltd., Edinburgh, GB;

Inventors:

Chandra B. Prakash, Austin, TX (US);

Ramin Zanbaghi, Austin, TX (US);

Assignee:

Cirrus Logic Inc., Austin, TX (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H 47/00 (2006.01); H01F 7/06 (2006.01); H02K 33/00 (2006.01); H04R 9/06 (2006.01);
U.S. Cl.
CPC ...
H01F 7/064 (2013.01); H02K 33/00 (2013.01); H04R 9/06 (2013.01); H04R 2400/03 (2013.01);
Abstract

A system may include an electromagnetic load, a driver configured to drive the electromagnetic load with a driving signal, and a processing system communicatively coupled to the electromagnetic load and configured to, during a haptic mode of the system couple a first terminal of the electromagnetic load to a ground voltage and cause the driving signal to have a first slew rate, and during a load sensing mode of the system for sensing a current associated with the electromagnetic load, couple the first terminal to a current-sensing circuit having a sense resistor coupled between the first terminal and an electrical node driven to a common-mode voltage and cause the driving signal to have a second slew rate lower than the first slew rate.


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