公开(公告)号：US11658674B2

公开(公告)日：2023-05-23

申请号：US17501112

申请日：2021-10-14

Applicant: STMicroelectronics S.r.l.

Inventor： Nicola Errico ,  Marzia Annovazzi ,  Alessandro Cannone ,  Enrico Ferrara ,  Gea Donzelli ,  Paolo Turbanti

IPC: H03M1/10 ,  H03M1/06

CPC classification number: H03M1/1071 ,  H03M1/0687

Abstract: In an embodiment, a circuit includes N sensing channels. Each channel includes a first main sensing node and a second redundancy sensing node paired therewith. N analog-to-digital converters (ADCs) are coupled to the first sensing nodes, with digital processing circuits coupled to the N ADCs. A pair of multiplexers are coupled to the second sensing nodes and to the N ADCs with a further ADC coupled to the output of the second multiplexer. An error checking circuit is coupled to the outputs of the second multiplexer and the further ADC to compare, at each time window in a sequence of N time windows, a first digital value and a second digital value resulting from conversion to digital of: an analog sensing signal at one of the first sensing nodes, and an analog sensing signal at the second sensing node paired with the selected one of the first sensing nodes.

公开(公告)号：US11557891B2

公开(公告)日：2023-01-17

申请号：US17454228

申请日：2021-11-09

Applicant: STMicroelectronics S.r.l.

Inventor： Nicola Errico ,  Antonio Giordano ,  Orazio Pennisi ,  Leonardo Pedone ,  Luca Finazzi

IPC: H02H3/087 ,  B60R16/03

Abstract: A circuit includes comparator circuitry to sense a current through a load and compare the intensity of the current with a comparison threshold which can be set to a first, lower threshold value and a second, higher threshold value. Logic circuitry receives from the comparator circuitry a comparison signal having a first value or a second value based on whether the intensity is lower or higher than the comparison threshold. The logic circuitry is configured to assert a first overcurrent event signal or a second overcurrent event signal based on the comparison signal having the first value or the second value and the comparison threshold set to the first or second threshold value.

公开(公告)号：US20210389351A1

公开(公告)日：2021-12-16

申请号：US17340559

申请日：2021-06-07

Applicant: STMicroelectronics S.r.l.

Inventor： Vanni Poletto ,  Nicola Errico ,  Paolo Vilmercati ,  Marco Cignoli ,  Vincenzo Salvatore Genna ,  Diego Alagna

IPC: G01R19/165 ,  H01H47/32 ,  H01H47/02

Abstract: An embodiment circuit comprises high-side and low-side switches arranged between supply and reference nodes, and having an intermediate node. A switching control signal is applied with opposite polarities to the high-side and low-side switches. An inductive load is coupled between the intermediate node and one of the supply and reference nodes. Current sensing circuitry is configured to sample a first value of the load current flowing in one of the high-side and low-side switches before a commutation of the switching control signal, sample a second value of the load current flowing in the other of the high-side and low-side switches after the commutation of the switching control signal, sample a third value of the load current flowing in the other of the high-side and low-side switches after the second sampling, and generate a failure signal as a function of the first, second and third sampled values of the load current.