329 patents
Page 4 of 17
Utility
Signal path monitor
24 Jan 23
A method for testing a signal path in a sensor, the signal path including a filter circuit and a comparator circuit, the method including: closing a first signal line that is arranged to bypass a first capacitor in the filter circuit; injecting a test signal into the signal path after the first signal line is closed; and detecting whether a signal that is output by the comparator circuit in response to the test signal satisfies a predetermined condition.
Ezequiel Rubinsztain, Pablo Javier Bolsinger
Filed: 22 Dec 20
Utility
Harmonic compensation with magnitude feedback for magnetic field sensors
17 Jan 23
A magnetic field sensor configured to sense a parameter associated with a rotatable target that affects a magnetic field includes at least one magnetic field sensing element that is arranged to generate a signal that is indicative of the magnetic field, a magnitude calculator responsive to the signal and configured to generate a magnitude signal indicative of a magnitude of the magnetic field, and a harmonic compensator responsive to the magnitude signal and configured to generate an estimate of a harmonic error of the signal and apply the estimate of the harmonic error of the signal to the signal to generate a corrected signal.
Nicolás Rigoni, Cristian Trinidad, Emanuele Andrea Casu
Filed: 20 Oct 21
Utility
Integrated shunt and magnetic field current sensor
17 Jan 23
According to some embodiments, a device includes: a magnetic field current sensor magnetically coupled to a conductor and configured to generate a magnetic field signal having a magnitude responsive to a current flowing through the conductor; a shunt interface having first and second input terminals electrically coupled to ends of a shunt disposed along the conductor, the shunt interface configured to generate a shunt signal having a magnitude responsive to the current flowing through the conductor; and a diagnostic circuit configured to receive the magnetic field signal and the shunt signal and to generate a fault signal based on a comparison between the magnitude of the magnetic field signal and the magnitude of the shunt signal.
Andreas P. Friedrich, Loïc André Messier, Alexander Latham
Filed: 2 Mar 21
Utility
Electronic circuit having vertical hall elements arranged on a substrate to reduce an orthogonality error
17 Jan 23
An electronic circuit can have a first plurality of vertical Hall elements and a second plurality of vertical Hall elements all disposed on a substrate having a plurality of crystal unit cells, wherein the first plurality of vertical Hall elements have longitudinal axes disposed within five degrees of parallel to an edge of the crystal unit cells, and wherein the second plurality of vertical Hall elements have longitudinal axes disposed between eighty-five and ninety-five degrees relative to the longitudinal axes of the first plurality of vertical Hall elements.
Hernán D. Romero, Gerardo A. Monreal, Juan Manuel Cesaretti
Filed: 23 Apr 21
Utility
Reducing stray magnetic-field effects using a magnetic-field closed-loop system
17 Jan 23
In one aspect, a magnetic-field sensor includes main coil circuitry configured to generate a first magnetic field signal at a first frequency.
Hernán D. Romero
Filed: 4 Jan 21
Utility
Semiconductor device having a group of trenches in an active region and a mesa portion
27 Dec 22
A semiconductor device is disclosed that includes a group of trenches positioned in active region inside a first semiconductor region.
Taro Kondo
Filed: 12 Jan 21
Utility
Magnetic-field sensor with test pin for diagnostic assessment of target validity, target placement and/or control of signal range and/or offset
13 Dec 22
In one aspect, an integrated circuit (IC) includes a magnetic-field sensor.
Kevin Maffei
Filed: 13 Jul 21
Utility
Reducing voltage non-linearity in a bridge having tunneling magnetoresistance (TMR) elements
13 Dec 22
In one aspect, a magnetic field sensor includes a plurality of tunneling magnetoresistance (TMR) elements that includes a first TMR element, a second TMR element, a third TMR element and a fourth TMR element.
Rémy Lassalle-Balier, Pierre Belliot, Christophe Hoareau, Jean-Michel Daga
Filed: 15 Oct 21
Utility
Current sensor integrated circuits
6 Dec 22
A current sensor integrated circuit (IC) includes a unitary lead frame having at least one first lead having a terminal end, at least one second lead having a terminal end, and a paddle having a first surface and a second opposing surface.
Shixi Louis Liu, Paul A. David, Shaun D. Milano, Rishikesh Nikam, Alexander Latham, Wade Bussing, Natasha Healey, Georges El Bacha
Filed: 13 Sep 21
Utility
Packaged current sensor integrated circuit
6 Dec 22
A packaged current sensor integrated circuit includes a primary conductor having an input portion and an output portion configured to carry a current to be measured by a magnetic sensing element supported by a semiconductor die adjacent to the primary conductor.
Simon E. Rock, Alexander Latham, Robert A. Briano, Shixi Louis Liu
Filed: 23 Aug 21
Utility
Current sensor having a flux concentrator for redirecting a magnetic field through two magnetic field sensing elements
29 Nov 22
A method can use a current sensor that can include a magnetic flux concentrator along with first and second magnetic field sensing elements disposed proximate to the magnetic flux concentrator, wherein the magnetic flux concentrator is operable to influence a direction of first and second magnetic fields at the first and second magnetic field sensing elements, respectively, the first and second magnetic fields resulting from an electrical current passing through a conductor, the first and second magnetic field sensing elements operable to generate first and second signals, respectively, in response to the first and second magnetic fields, respectively, wherein the current sensor can also include a differencing circuit operable to subtract the first and second signals to generate a difference signal related to the electrical current.
Yannick Vuillermet, Cédric Gillet, Loïc André Messier, Xavier Blanc
Filed: 30 Jun 21
Utility
Dual circuit digital isolator
29 Nov 22
An apparatus, comprising: a substrate; a coupling capacitor that is formed over the substrate; and an isolator that is formed between the substrate and the coupling capacitor, the isolator including: (a) an MP-well layer, (b) a first well layer, (c) an epi tub layer that is nested in the MP-well layer and the first well layer, and (d) a second well layer that is nested in the epi tub layer.
Sundar Chetlur, Maxim Klebanov, Cory Voisine, Kenneth Snowdon, Hsuan-Jung Wu
Filed: 9 Oct 20
Utility
Stray field immune coil-activated sensor
8 Nov 22
A magnetic field sensor includes: a substrate; a transmission coil formed on the substrate, the transmission coil being configured to generate a direct magnetic field; a sensing bridge that is formed on the substrate, the sensing bridge being configured to detect the direct magnetic field and a reflected magnetic field that is generated by a target, the reflected magnetic field being generated in response to eddy currents that are induced in the target by the direct magnetic field; a processing circuitry being configured to generate an output signal that is indicative of a position of the target, the output signal being generated by normalizing a first signal with respect to a second signal, the first signal being generated at least in part by using the sensing bridge, and the second signal being generated at least in part by using the sensing bridge, wherein the second signal is based on the detected direct magnetic field.
Hernán D. Romero
Filed: 26 Feb 21
Utility
Non-orthogonality adjustment based on a duty cycle
25 Oct 22
According to some embodiments, a method implemented in electronic circuitry includes: receiving a first signal having a sinusoidal waveform; receiving a second signal having a sinusoidal waveform; generating a composite signal responsive to the first and second signals; determining an orthogonality adjustment coefficient based on a duty cycle of the composite signal; and applying the orthogonality adjustment coefficient to generate an adjusted second signal that is substantially orthogonal to the first signal.
Sergio Nicolás Deligiannis, Nicolás Rigoni
Filed: 4 Dec 20
Utility
System and related techniques that provide an angle sensor for sensing an angle of rotation of a ferromagnetic screw
18 Oct 22
A system and a method can use a magnetic field sensor to measure rotation angles of a ferromagnetic object in the form of a screw having screw threads.
Aurelian Diaconu, Paul A. David
Filed: 16 Apr 21
Utility
Low acoustic noise open loop motor startup
18 Oct 22
Methods and apparatus for open loop startup of a three-phase motor that reduces acoustic noise.
Masahira Kurihara, Dmytro Sakharov, Anton Babushkin
Filed: 9 Jul 21
Utility
Linear bridges having nonlinear elements
11 Oct 22
In one aspect, a bridge includes a first magnetoresistance element having a first reference angle, a second magnetoresistance element in series with the first magnetoresistance element and having a second reference angle, a third magnetoresistance element in parallel with the first magnetoresistance element and having the first reference angle and a fourth magnetoresistance element in series with the third magnetoresistance element and having the second reference angle.
Rémy Lassalle-Balier, Jean-Michel Daga, Damien Dehu
Filed: 18 Mar 20
Utility
Converter digital control circuit with adaptive feedforward compensation
11 Oct 22
A control circuit for a voltage regulator includes a divider coupled to the regulated output voltage to generate a divided voltage having a value that is a fraction of the regulated output voltage, an ADC responsive to the divided voltage to generate a feedback control signal, a digital compensator responsive to the feedback control signal and to a feedforward control signal scaled by a feedforward gain value to generate a compensator signal, and a pulse width modulator responsive to the compensator signal to generate a voltage control signal to control a switch of the voltage regulator.
Kapil Kesarwani, Mackenzie Tope
Filed: 1 Oct 19
Utility
Reducing stray magnetic field effects using a magnetic field feedback
11 Oct 22
In one aspect, a magnetic-field sensor includes main coil circuitry configured to generate a first magnetic-field signal at a first frequency; a first channel; a second channel; a subtractor circuit configured to subtract a second channel output signal from a first channel output signal to form a subtraction signal; an adder circuit configured to combine the first channel output signal and the second channel output signal to form a summation signal; processing circuitry configured to receive the summation signal and to provide a magnetic-field sensor output signal indicating a position of the target; feedback circuitry configured to receive the subtraction signal and to provide a first feedback signal to the processing circuitry, and a second feedback signal; and a secondary coil circuitry configured to receive the second feedback signal and to generate, based on the second feedback signal, a second magnetic-field signal to reduce the first magnetic-field signal received.
Hernán D. Romero, Octavio H. Alpago
Filed: 28 May 21
Utility
Circuit and method for storing information in non-volatile memory during a loss of power event
11 Oct 22
A data storage circuit for storing data from volatile memory in response to a power loss, the data storage circuit including an input for receiving a power loss signal in response to a power loss from at least one power source, an input configured to receive data from a volatile memory, a single block of non-volatile matrix of memory cells and a driver circuit coupled to said single row of non-volatile matrix of memory cells.
Juan Manuel Cesaretti, Alejandro Gabriel Milesi
Filed: 15 Jan 21