Patents
US 12676611 B2: Low-power magnetic sensing device and magnetic switch device comprising the magnetic sensing device
- Granted
- 2026-07-07
- Filed
- 2024-01-31 application 18428150
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Magnetic sensing device integrated in a magnetic switch device that makes or breaks contact in the presence of an external magnetic field, comprising: a first transistor biased at a first terminal by a first bias voltage and a first magnetoresistive element having a first resistance variable with the external magnetic field. At a reference field strength, the first resistance has a first reference resistance value, and the first bias voltage is adjustable to control a first current at the second terminal of the first transistor at a first reference current value. When the external magnetic field is varied around the reference field strength, the first variable resistance varies around the first reference resistance value by a resistance delta, such that the first current modulates around the first reference current value by a current delta. A magnetic switch device comprising the magnetic sensing device is also disclosed.
Source: PTBLXML, file of 2026-07-07 (ipgb20260707.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Allegro MicroSystems, LLC 910 patents | US company or organization | Manchester, NH | ALLEGRO MICROSYSTEMS, INC. SEC filer FUZZY low confidence: same name (legal endings aside), one of each nationally | PTBLXML, file of 2026-07-07 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Hakan Ates Gurcan | Los Gatos, CA | PTBLXML, file of 2026-07-07 | ||
| Jeffrey Childress | San Jose, CA | PTBLXML, file of 2026-07-07 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H03K | Pulse technique | H03K17/9505 | PTBLXML, file of 2026-07-07 |
| G01R | Measuring electric variables; measuring magnetic variables | G01R33/098 | PTBLXML, file of 2026-07-07 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.