公开(公告)号：US11435382B2

公开(公告)日：2022-09-06

申请号：US17166676

申请日：2021-02-03

Applicant: STMicroelectronics S.r.l.

Inventor： Valerio Lo Muzzo ,  Alberto Gussoni ,  Ambrogio Bogani ,  Fabrizio Martignoni ,  Mattia Fausto Moretti

IPC: G01R19/00 ,  G01R19/165 ,  H03F1/52 ,  H03F1/22

Abstract: 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.

公开(公告)号：US20210156894A1

公开(公告)日：2021-05-27

申请号：US17166676

申请日：2021-02-03

Applicant: STMicroelectronics S.r.l.

Inventor： Valerio Lo Muzzo ,  Alberto Gussoni ,  Ambrogio Bogani ,  Fabrizio Martignoni ,  Mattia Fausto Moretti

IPC: G01R19/165 ,  H03F1/52 ,  H03F1/22

Abstract: 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.

公开(公告)号：US20210003619A1

公开(公告)日：2021-01-07

申请号：US16460680

申请日：2019-07-02

Applicant: STMicroelectronics S.r.l.

Inventor： Valerio Lo Muzzo ,  Alberto Gussoni ,  Ambrogio Bogani ,  Fabrizio Martignoni ,  Mattia Fausto Moretti

IPC: G01R19/165 ,  H03F1/22 ,  H03F1/52

Abstract: 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.

公开(公告)号：US10928425B2

公开(公告)日：2021-02-23

申请号：US16460680

申请日：2019-07-02

Applicant: STMicroelectronics S.r.l.

Inventor： Valerio Lo Muzzo ,  Alberto Gussoni ,  Ambrogio Bogani ,  Fabrizio Martignoni ,  Mattia Fausto Moretti

IPC: G01R19/00 ,  G01R19/165 ,  H03F1/52 ,  H03F1/22

Abstract: 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.