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US 11,115,084 B2Granted
Isolated data transfer system
AssigneeAllegro MicroSystems, LLC
InventorsAlexander Latham, Claude Fermon, Myriam Pannetier-Lecoeur
Life of this patent
Estimating the term…
Abstract
Methods and apparatus for providing data transfer with a drive coil to transmit information, a receive coil magnetically coupled to the drive coil, and a first magnetoresistive sensor proximate the receive coil to detect information from the receive coil. In embodiments, the drive and receive coils are separated by an isolation material. In embodiments, a signal isolator IC packages includes transmit and receive coils and a magnetic field sensing element coupled to the receive coil.
Claims29
A system, comprising:
- a drive coil to transmit information;
- a receive coil magnetically coupled to the drive coil for receiving the information from the drive coil;
- and
- a first magnetic field sensing element proximate the receive coil to detect the information from the receive coil, wherein the receive coil includes a first narrowed portion for concentrating magnetic field generated by the current through the receive coil on the first magnetic field sensing element.
1 more element
A signal isolator IC package, comprising:
- a drive coil to transmit information;
- a receive coil magnetically coupled to the drive coil for receiving the information from the drive coil;
- and
- a first magnetic field sensing element proximate the receive coil to detect the information from the receive coil,
- wherein the receive coil includes a first narrowed portion for concentrating magnetic field generated by the current through the receive coil on the first magnetic field sensing element.
2 more elements
A method, comprising:
- employing a drive coil to transmit information;
- employing a receive coil magnetically coupled to the drive coil for receiving the information from the drive coil;
- and
- employing a first magnetic field sensing element proximate the receive coil to detect the information from the receive coil,
- wherein the receive coil includes a first narrowed portion for concentrating magnetic field generated by the current through the receive coil on the first magnetic field sensing element.
2 more elements
Dependencies are inferred from the claim text.