公开(公告)号：US11018601B2

公开(公告)日：2021-05-25

申请号：US16294679

申请日：2019-03-06

Applicant: STMicroelectronics S.r.l.

Inventor： Giuseppe D'Angelo

IPC: H02M7/5387 ,  H02P6/28 ,  H02M1/088 ,  H03K7/08 ,  H02M1/00

Abstract: A half-bridge driver circuit includes an amplifier configured to generate a measurement signal indicative of a current flowing through a shunt resistor. A processing circuit is configured to selectively acquire a sample of the measurement signal in response to a trigger signal. A synchronization circuit is configured to determine a first value indicative of the switch-on duration of a high side control signal, determine a second value indicative of the switching period of the high side control signal, compute a third value based on the first and second values, generate a third signal based on the third value when the next switching period of the high side control signal starts, start a second counter in response to the third signal, compare the count value of the second counter with a reference value to generate a fourth signal, and generate the trigger signal as a function of the fourth signal.

公开(公告)号：US10197625B2

公开(公告)日：2019-02-05

申请号：US15389335

申请日：2016-12-22

Applicant: STMicroelectronics S.r.l.

Inventor： Giuseppe D'Angelo

IPC: G01R31/317 ,  H03K7/08 ,  H03K19/007 ,  G01R31/3181 ,  H03K17/22 ,  H03K21/38

Abstract: Fault detection circuitry and a corresponding method are disclosed. A count value that is indicative of the switching period of a PWM signal is determined and it is determined whether this count value is between a first threshold and a second threshold. An error signal is generated when the switching period is not between the first and the second threshold. A count value that is indicative of the switch-on duration of the PWM signal is determined and compared with a switch-on threshold in order to determine whether the switch-on duration is greater than a maximum switch-on duration. A count value that is indicative of the switch-off duration of the PWM signal is determined and compared with a switch-off threshold in order to determine whether the switch-off duration is greater than a maximum switch-off duration. Error signals can be generated when the durations are greater than the maximum durations.

公开(公告)号：US11204620B2

公开(公告)日：2021-12-21

申请号：US16851988

申请日：2020-04-17

Applicant: STMicroelectronics S.r.l.

Inventor： Giuseppe D'Angelo

IPC: H03K21/00 ,  G06F1/08 ,  G04F10/04 ,  H03K5/159 ,  H03K21/02

Abstract: A time capture circuit can measure time between edges of a logic input signal. A delay line generates consecutive increasingly delayed replicas of the logic input signal. A free running counter is clocked by a counter clock signal corresponding to an external clock signal multiplied by a clock scale factor. A counter value capture circuit captures the counter value upon occurrence of an edge in the input signal, outputs a captured counter value, and issues a trigger signal. A decoder determines a decoded value based on values of the input signal and of the plurality of consecutive increasingly replicas when the trigger signal is issued and computes a capture value as the difference of the captured counter value logical left shifted by a first scale factor and the decoded value logical right shifted by a second scale factor.

公开(公告)号：US20200153447A1

公开(公告)日：2020-05-14

申请号：US16667419

申请日：2019-10-29

Applicant: STMicroelectronics S.r.l.

Inventor： Giuseppe D'Angelo

IPC: H03M1/06 ,  H02P6/14 ,  H03M1/10

Abstract: In an embodiment, a circuit includes first and second analog-to-digital conversion circuit path. The first analog-to-digital conversion circuit path is configured to provide first converted digital data from an analog input signal. The second analog-to-digital conversion circuit path is configured to provide second converted digital data from the analog input signal. A comparison circuit is configured to compare the first converted digital data with the second converter digital data and generate a fault based on the comparison to reveal a mismatch between the first and second converted digital data.

公开(公告)号：US20190280619A1

公开(公告)日：2019-09-12

申请号：US16294679

申请日：2019-03-06

Applicant: STMicroelectronics S.r.l.

Inventor： Giuseppe D'Angelo

IPC: H02M7/5387 ,  H02P6/28 ,  H02M1/088

Abstract: A half-bridge driver circuit includes an amplifier configured to generate a measurement signal indicative of a current flowing through a shunt resistor. A processing circuit is configured to selectively acquire a sample of the measurement signal in response to a trigger signal. A synchronization circuit is configured to determine a first value indicative of the switch-on duration of a high side control signal, determine a second value indicative of the switching period of the high side control signal, compute a third value based on the first and second values, generate a third signal based on the third value when the next switching period of the high side control signal starts, start a second counter in response to the third signal, compare the count value of the second counter with a reference value to generate a fourth signal, and generate the trigger signal as a function of the fourth signal.

公开(公告)号：US11265004B2

公开(公告)日：2022-03-01

申请号：US16667419

申请日：2019-10-29

Applicant: STMicroelectronics S.r.l.

Inventor： Giuseppe D'Angelo

IPC: H03M1/10 ,  H03M1/06 ,  H02P6/14

Abstract: In an embodiment, a circuit includes first and second analog-to-digital conversion circuit path. The first analog-to-digital conversion circuit path is configured to provide first converted digital data from an analog input signal. The second analog-to-digital conversion circuit path is configured to provide second converted digital data from the analog input signal. A comparison circuit is configured to compare the first converted digital data with the second converter digital data and generate a fault based on the comparison to reveal a mismatch between the first and second converted digital data.

公开(公告)号：US20190146034A1

公开(公告)日：2019-05-16

申请号：US16244954

申请日：2019-01-10

Applicant: STMicroelectronics S.r.l

Inventor： Giuseppe D'Angelo

IPC: G01R31/317 ,  H03K7/08 ,  H03K19/007 ,  G01R31/3181 ,  H03K17/22

Abstract: Fault detection circuitry and a corresponding method are disclosed. A count value that is indicative of the switching period of a PWM signal is determined and it is determined whether this count value is between a first threshold and a second threshold. An error signal is generated when the switching period is not between the first and the second threshold. A count value that is indicative of the switch-on duration of the PWM signal is determined and compared with a switch-on threshold in order to determine whether the switch-on duration is greater than a maximum switch-on duration. A count value that is indicative of the switch-off duration of the PWM signal is determined and compared with a switch-off threshold in order to determine whether the switch-off duration is greater than a maximum switch-off duration. Error signals can be generated when the durations are greater than the maximum durations.

公开(公告)号：US20170328953A1

公开(公告)日：2017-11-16

申请号：US15389335

申请日：2016-12-22

Applicant: STMicroelectronics S.r.l.

Inventor： Giuseppe D'Angelo

IPC: G01R31/317 ,  G01R31/3181 ,  H03K7/08 ,  H03K17/22

CPC classification number: G01R31/31703 ,  G01R31/3181 ,  H03K7/08 ,  H03K17/22 ,  H03K19/007 ,  H03K21/38

Abstract: Fault detection circuitry and a corresponding method are disclosed. A count value that is indicative of the switching period of a PWM signal is determined and it is determined whether this count value is between a first threshold and a second threshold. An error signal is generated when the switching period is not between the first and the second threshold. A count value that is indicative of the switch-on duration of the PWM signal is determined and compared with a switch-on threshold in order to determine whether the switch-on duration is greater than a maximum switch-on duration. A count value that is indicative of the switch-off duration of the PWM signal is determined and compared with a switch-off threshold in order to determine whether the switch-off duration is greater than a maximum switch-off duration. Error signals can be generated when the durations are greater than the maximum durations.

公开(公告)号：US09523566B2

公开(公告)日：2016-12-20

申请号：US14310536

申请日：2014-06-20

Applicant: STMicroelectronics S.r.l.

Inventor： Giuseppe D'Angelo ,  Giovanni Moselli ,  Virginia Clemente

IPC: H02P6/00 ,  G01B7/00 ,  H02P6/18

CPC classification number: G01B7/003 ,  H02P6/18

Abstract: Electric circuit for estimating the angular position of a rotor of an electric motor, including: a sensing module configured to receive at least one electric signal representative of a drive current of the electric motor and to generate a measurement signal indicative of a switching of the at least one electric signal and a switching index indicative of the type of switching, rising or falling, of the at least one electric signal; and a computing module configured to supply, from the measurement signal and switching index a position signal representative of an angular position of the electric motor rotor.

Abstract translation: 用于估计电动机的转子的角位置的电路​​，包括：感测模块，被配置为接收表示所述电动机的驱动电流的至少一个电信号，并产生指示所述电动机的转换的测量信号 至少一个电信号和指示所述至少一个电信号的切换，上升或下降的类型的开关指标; 以及计算模块，被配置为从所述测量信号和切换指数提供表示所述电动机转子的角位置的位置信号。

公开(公告)号：US20190280635A1

公开(公告)日：2019-09-12

申请号：US16294573

申请日：2019-03-06

Applicant: STMicroelectronics S.r.l.

Inventor： Giuseppe D'Angelo

IPC: H02P27/08 ,  H02M7/5387 ,  H02P6/08

Abstract: A half-bridge driver circuit is configured to generate drive signals based on control signals. A processing circuit is configured to generate high side and low side control signals based on a control signal. An edge detector is configured to generate first and second signals in response to rising and falling edges in the control signal. A state machine transitions between states in response to the first and second signals, and is configured to sequentially, in response to the first signal, set the high side and low side control signals low; in response to the second signal, set the high side control signal high and the low side control signal low; in response to the first signal, set the high side and low side control signals low; and in response to the second signal, set the high side control signal low and the low side control signal high.