Allegro Microsystems, LLC

Evan Shorman

Alexander Latham

William P Taylor

Michael C Doogue

Andreas P Friedrich

Yannick Vuillermet

Juan Manuel Cesaretti

Loïc André Messier

Simon Rock

Cory Voisine

Georges El Bacha

A system, comprising a bus bar having a first through-hole formed therein and a first current sensor that is disposed adjacent to the first branch. The first through-hole is arranged to define, at least in part, a first branch of the bus bar and a second branch of the bus bar. The first branch has different length and/or thickness than the second branch. The first current sensor is arranged to measure an electrical current through the bus bar.

Multiple branch bus bar for coreless current sensing application

A sensor includes a sensing element configured to generate a sensing element output signal indicative of a sensed parameter and a signal path responsive to the sensing element output signal and having at least one of an adjustable gain or an adjustable offset, wherein the signal path is configured to generate a sensor output signal indicative of the sensed parameter. A supply voltage detector is configured to generate a supply voltage signal indicative of which of a plurality of voltage ranges a supply voltage of the sensor falls within and at least one of the adjustable gain or the adjustable offset is adjustable in response to the supply voltage signal.

Supply voltage configurable sensor

A magnetic field sensor is provided with improved stress compensation accounting for temperature. The magnetic field sensor includes a stress sensing, element, a temperature sensing element, a magnetic field sensing element, a memory, and an electronic circuitry. The memory is configured to store a first table. The first table identities a plurality of stress-to-sensitivity coefficients. Each of the plurality of stress-to-sensitivity coefficients is mapped to a different temperature value. The electronic circuitry is configured to use a temperature reading and a stress reading to calculate a stress difference between an expected stress and the stress reading. The electronic circuitry is further configured to obtain a stress-to-sensitivity coefficient that corresponds to the temperature reading by using the first table, calculate a gain adjustment coefficient based an the stress-to-sensitivity coefficient, and adjust a gain of a signal that is generated by the magnetic field sensing element based on the grain adjustment coefficient.

Magnetic sensor with improved stress compensation accounting for temperature

A magnetic field sensor includes a substrate, a first channel comprising a first magnetic field sensing element supported by the substrate and configured to generate a first magnetic field signal indicative of a first magnetic field experienced by the first magnetic field sensing element, a second channel comprising a second magnetic field sensing element supported by the substrate and configured to generate a second magnetic field signal indicative of a second magnetic field experienced by the second magnetic field sensing element, and at least one shield configured to reduce a bandwidth of the first magnetic field by a first amount and to reduce a bandwidth of the second magnetic field by a second amount. The shield is able to act as a magnetic anti-aliasing filter for the magnetic field sensing elements, which can then be chopped or sampled.

Magnetic field sensors having a magnetic anti-aliasing filter

A current sensor integrated circuit including a magnetic field sensing element, a current conductor, an insulation structure, and a power calculation circuit is configured to meet safety isolation requirements. Isolation resistors allow for voltage from a high voltage side to be sensed at a low voltage side of the circuit. The insulation structure, current sensor package, and isolation resistors can achieve at least 500 Vrms isolation.

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Manchester, NH, United States of America

Evan Shorman