Invention Grant
- Patent Title: Duty cycle of an output signal of a magnetic field sensor to detect speed and direction of angular rotation of a rotating magnetic structure or a fault
-
Application No.: US15655403Application Date: 2017-07-20
-
Publication No.: US10473486B2Publication Date: 2019-11-12
- Inventor: Michael C. Doogue , P. Karl Scheller
- Applicant: Allegro MicroSystems, LLC
- Applicant Address: US NH Manchester
- Assignee: Allegro MicroSystems, LLC
- Current Assignee: Allegro MicroSystems, LLC
- Current Assignee Address: US NH Manchester
- Agency: Daly, Crowley, Mofford & Durkee, LLP
- Main IPC: G01D5/14
- IPC: G01D5/14 ; G01D5/24 ; G01D5/244 ; G01R31/02

Abstract:
In one aspect, an integrated circuit (IC) includes a magnetic field sensor to detect speed and direction of angular rotation of a rotating magnetic structure. The magnetic field sensor includes at least two magnetic field sensing elements configured to sense changes in a magnetic field caused by rotation of the magnetic structure. The IC also includes an output port configured to provide an output signal of the magnetic field sensor. A duty cycle percentage of the output signal indicates the speed and the direction or indicates a fault.
Public/Granted literature
Information query