Allegro Microsystems, LLC

Stmicroelectronics Design and Application S.r.o.

Stmicroelectronics (grenoble 2) Sas

Stmicroelectronics Asia Pacific Pte Limited

Roman Prochazka

Hernán D Romero

Craig S Petrie

David Jamie Haas

Chee Weng Cheong

Christophe Lorin

Steven Daubert

Martin Drinovsky

Richard Stary

Sina Haji Alizad

Milan Valenta

Benedicte Micheau

Vaclav Jelen

Ondrej Plachy

A current sensor integrated circuit to sense a current through a resistor includes a substrate, a tub disposed in the substrate, an analog front end disposed in the tub and comprising an amplifier having inputs coupled across the resistor and a charging circuit configured to bias the analog front end and the tub to a bias voltage that is a predetermined offset voltage greater than a common mode voltage associated with the resistor. In embodiments, the analog front end is biased to a first bias voltage and the tub is biased to a second, different bias voltage.

Current sensor integrated circuit with common mode voltage rejection

Magnetic field sensors and associated techniques use a Hall effect element in a current spinning arrangement in combination with a rippled reduction feedback network configured to reduce undesirable spectral components generated by the current spinning and other circuit elements.

Fast response magnetic field sensors and associated methods for removing undesirable spectral components

A current mirror circuit includes an input current leg and an output current leg. The input current leg includes: a first bipolar junction transistor (BJT) having a collector terminal configured to receive an input current sourced at a current node and a first metal oxide semiconductor field effect transistor (MOSFET) having a gate terminal coupled to the current node and a source terminal coupled to a base terminal of the first BJT. The output current leg includes: a second BJT having a collector terminal configured to supply an output current and a second MOSFET having a gate terminal coupled to the current node and a source terminal coupled to a base terminal of the second BJT.

Base current compensation for a BJT current mirror

A method of charging a battery of a device using a battery of a computer powered by the battery, in which the procedure is implemented by a circuit independent of the computer's processors. The method includes supplying a power supply voltage, insufficient to charge a battery, to a computer port, as long as a device is detected as connected to the port, controlling the supply of a charging voltage to the port, while supplying charging voltage to the port, detecting an end of charging condition of a battery of the device, and controlling the cutting off of the charging voltage to the port if the end of charging condition is detected, where this condition is determined according to the intensity of a charging current and according to a quantity of electrical charge supplied to the port and/or of a charging period.

Procedure for charging a portable device using a battery-operated computer

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Struharov, Czechia

Roman Prochazka