Allegro Microsystems, LLC

Zf Friedrichshafen Ag

Thomas Kerdraon

Andreas P Friedrich

Yannick Vuillermet

Gary T Pepka

Simon Tima

Dominikus Maisl

Manfred Busch

Michael C Doogue

Shaun D Milano

Michael J Gaboury

Loïc André Messier

Simon Rock

Georges El Bacha

Stefan Hakspiel

Current sensor packages are described including a leadframe configured to carry a current to be sensed and a current sensor that is electrically isolated from the leadframe. The current sensor is disposed adjacent to a first portion of the leadframe that includes a plurality of notches. An encapsulating material is configured to encapsulate the current sensor and at least a part of the first portion of the leadframe that is adjacent to the current sensor and includes the plurality of notches. The current sensor includes a substrate, a first magnetic field sensing element that is formed on the substrate, and a second magnetic field sensing element that is formed on the substrate. The first magnetic field sensing element and the second magnetic field sensing element are disposed on opposite sides of a central axis of the first portion of the leadframe.

Current sensor package

A magnetic field sensor includes a back bias magnet to generate a DC magnetic field. First and second magnetic field sensing elements of the magnetic field sensor are disposed proximate to at least one ferromagnetic surface of a ferromagnetic target object. The first and second magnetic field sensing elements generate first and second electronic signals, respectively, in response to first and second sensed magnetic fields corresponding to the DC magnetic field but influenced by the at least one ferromagnetic surface. The magnetic field sensor generates a difference signal that is a difference of amplitudes of the first and second electronic signals. The difference signal is indicative of a rotation measurement of an absolute relative rotation of the ferromagnetic target object and the magnetic field sensor about a rotation axis.

Angle sensing using differential magnetic measurement and a back bias magnet

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. The output signal indicates the angular direction and one of the speed or a fault.

Magnetic field sensor to detect direction of angular rotation of a rotating magnetic structure, speed of the rotating magnetic structure or fault

In one aspect, an integrated circuit (IC) includes a magnetic field sensor to detect an angular speed and an angular direction 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. The output signal indicates the angular direction and the speed.

Magnetic field sensor to detect speed and direction of angular rotation of a rotating magnetic structure

A shifting device with two positive-locking shifting element halves includes a positive connection between the shifting element halves that is able to be established or released. The respective prevailing operating states of the shifting element halves are determined through a sensor device. The surface areas of an encoder contour relative to a measuring device are formed in a convex or concave manner, whereas a perpendicular gap between the surface areas of the encoder contour and a permanent magnet, starting from a joint area between the surface areas in the direction of an end area of the surface areas increases or decreases in each case.

Shifting device of a vehicle transmission

A magnetic field sensor with a magnet is disposed proximate to a ferromagnetic target object having at least one ferromagnetic surface. The magnetic field sensor is operable to sense a relative location between the magnetic field sensor and the ferromagnetic target object along a movement line. In some embodiments, the target object is also spinning about a rotation axis parallel to the movement line. A corresponding method is described.

Magnetic field sensor and method for sensing relative location of the magnetic field sensor and a target object along a movement line

Methods and apparatus for an integrated circuit having a magnetic sensing element, a fault detection module including circuitry to detect a fault condition and to self-test operation of the circuitry to detect the fault. The integrated circuit includes a fault pin to indicate the fault condition.

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Lenzkirch, Germany

Thomas Kerdraon