公开(公告)号：US12015515B2

公开(公告)日：2024-06-18

申请号：US17845860

申请日：2022-06-21

Applicant: STMicroelectronics S.r.l.

Inventor： Valerio Bendotti ,  Nicola De Campo ,  Carlo Curina

IPC: H04L27/36 ,  H03K17/687 ,  H03K19/096 ,  H03K19/21 ,  H04L25/40

CPC classification number: H04L27/36 ,  H03K17/687 ,  H03K19/096 ,  H03K19/21 ,  H04L25/40

Abstract: A transmitter circuit receives a PWM input signal and a clock signal. A logic circuit generates a control signal as a function of the clock signal. The control signal is normally set to high, and is periodically set to low for a transmission time interval when an edge is detected in the clock signal. The transmission time interval is shorter than a half clock period of the clock signal. A tri-state transmitter receives the PWM input signal and the control signal, and produces first and a second output signals at first and second transmitter output nodes, respectively. The output signals have a voltage swing between a positive voltage and a reference voltage. An output control circuit is sensitive to the control signal and is coupled to the first and second transmitter output nodes.

公开(公告)号：US11892518B2

公开(公告)日：2024-02-06

申请号：US17368153

申请日：2021-07-06

Applicant: STMicroelectronics S.r.l.

Inventor： Orazio Pennisi ,  Valerio Bendotti ,  Vanni Poletto ,  Vittorio D'Angelo

IPC: G01R31/396 ,  G01R31/50 ,  G01R31/54 ,  B60L58/22 ,  H01M10/46 ,  H01M10/18 ,  H02J7/14 ,  H01M10/48 ,  G01R31/52

CPC classification number: G01R31/396 ,  B60L58/22 ,  G01R31/50 ,  G01R31/52 ,  G01R31/54 ,  H01M10/46 ,  H01M10/482 ,  H02J7/14

Abstract: A method of operating a control device includes performing an open load test or a current leakage test. The open load test includes activating a first current and then a second current and sensing with the first current and the second current activated, respectively, a first voltage drop and a second voltage drop between charge distribution pins and charge sensing pins of the control device. Respective differences are calculated between the first voltage drop and the second voltage drop sensed with the first current and the second current activated, respectively. These differences are compared with respective thresholds and an open circuit condition is declared as a result of the differences calculated reaching these thresholds.

公开(公告)号：US11885845B2

公开(公告)日：2024-01-30

申请号：US17678772

申请日：2022-02-23

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Gaudenzia Bagnati ,  Stefano Castorina ,  Valerio Bendotti

IPC: G01R31/02 ,  H03K17/687 ,  H03K5/24 ,  G01R31/54 ,  G01R19/165 ,  G01R31/28

CPC classification number: G01R31/2851 ,  G01R19/16571 ,  G01R31/54 ,  H03K5/24 ,  H03K17/6874 ,  H03K2217/0063 ,  H03K2217/0072

Abstract: An integrated circuit includes a plurality of power transistor driver channels for driving external loads. The driver channels can be selectively configured as high-side (HS) or low-side (LS) driver channels. The integrated circuit includes, for each driver channel, a respective on-state test circuit and a respective controller. The on-state test circuits can be selectively configured to test for HS overcurrent conditions, LS overcurrent conditions, HS open load conditions, and LS open load conditions.

公开(公告)号：US20230308097A1

公开(公告)日：2023-09-28

申请号：US18328266

申请日：2023-06-02

Applicant: STMicroelectronics S.r.l.

Inventor： Vittorio D'Angelo ,  Salvatore Cannavacciuolo ,  Valerio Bendotti ,  Paolo Selvo ,  Diego Alagna

IPC: H03K17/567 ,  H03K3/017 ,  H03K7/08 ,  H03K17/687 ,  H03K17/689 ,  H03M1/50

CPC classification number: H03K17/567 ,  H03K3/017 ,  H03K7/08 ,  H03K17/687 ,  H03K17/689 ,  H03M1/504

Abstract: In an embodiment a method includes receiving, at an input of a low-voltage section of a gate driver, a PWM control signal with a switching frequency, providing, at an output of a high-voltage section of the gat driver, a gate-driving signal as a function of the PWM control signal to a power stage, wherein the high-voltage section is galvanically isolated from the low-voltage section, receiving, at a feedback input of the high-voltage section, at least one feedback signal indicative of an operation of the power stage, converting, at an ADC module of the high-voltage section, the feedback signal into a digital data stream, providing, to the ADC module, a conversion-trigger signal designed to determine a start of a conversion for acquiring a new sample of the feedback signal and sending, via an isolation communication channel between the low-voltage section and the high-voltage section, the digital data stream to the low-voltage section.

公开(公告)号：US11370321B2

公开(公告)日：2022-06-28

申请号：US16893729

申请日：2020-06-05

Applicant: STMicroelectronics S.r.l.

Inventor： Orazio Pennisi ,  Valerio Bendotti ,  Vittorio D'Angelo ,  Daniele Zella

IPC: B60L58/10 ,  B60L50/60 ,  H02J7/00

Abstract: A method of operating a battery management system is disclosed. A first voltage drop is sensed between a first terminal of a first battery cell and a second terminal of the first battery cell and a second voltage drop is sensed between a charge distribution pin and the second terminal of the first battery cell. The charge distribution pin is coupled to the first terminal of the first battery cell through a resistor. A difference is calculated between the first voltage drop and the second voltage drop and a faulty condition is detected when Rn absolute value of the difference between the first voltage drop and the second voltage drop exceeds a threshold.