Magnetic field sensor with overcurrent detection
US12078695B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2022 |
| Grant date | Sep 3, 2024 |
| Priority date | — |
| Expiry date | Oct 10, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/0005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure provides a magnetic field sensor system, comprising an AMR magnetic field sensor and an overcurrent detection sensor. The overcurrent detection sensor comprises an AMR sensing element connected in a half bride arrangement with a field insensitive component. The output of the overcurrent detection sensor is able to monitor the strength of the magnetic field experiences by the sensor system, and detect if the magnet field goes beyond a sensing threshold of the AMR magnetic field sensor. Outside of this threshold, the AMR magnet field sensor is unable to provide a measurement of the magnetic field strength. The overcurrent detection sensor can therefore detect that the system is operating in very high magnetic fields, which in turn can indicate that there is overcurrent in the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.