Stmicroelectronics S.r.l.

Ambrogio Bogani

Alberto Gussoni

Fabrizio Martignoni

Mattia Fausto Moretti

Valerio Lo Muzzo

Paolo Pascale

Luigino D'Alessio

A current monitoring circuit includes: an output terminal configured to be coupled to a controller; an inverter having an output coupled to the output terminal; a first transconductance amplifier having first and second inputs configured to be coupled across a sense resistive element, and an output coupled to an input of the inverter; and a current generator having a second transconductance amplifier configured to generate a reference current at an output of the current generator based on a reference voltage, the output of the current generator being coupled to the input of the inverter, where the output of the inverter is configured to be in a first state when a load current flowing through the sense resistive element is higher than a predetermined threshold, and in a second state when the load current is lower than the predetermined threshold, and where the predetermined threshold is based on the reference current.

High-speed AFE for current monitoring applications

A method is for choosing a mode out of a set of functioning modes of an integrated circuit (IC) device powered from different supply voltages from respective supply nodes. The IC device may include a mode pin for determining a functioning mode of the device, an internal control circuit coupled to the supply nodes and to the mode pin for sensing an electrical value on the mode pin and to start the IC device in a respective functioning mode depending on the supply node that is powered first. The method may include identifying the different supply voltage that first exceeds a threshold voltage, when the internal control circuit is powered, sensing the electrical value on the mode pin, and powering circuits of the IC device from the different supply voltage that first exceeded the threshold voltage and starting the device in a functioning mode determined by a value of the electrical value sensed on the mode pin and by the different supply voltage that first exceeded the voltage threshold.

Method of choosing a functioning mode of an integrated circuit device and relative device

Growing community of inventors

Limbiate, Italy

Ambrogio Bogani