公开(公告)号：US20210384852A1

公开(公告)日：2021-12-09

申请号：US17323602

申请日：2021-05-18

Applicant: STMicroelectronics S.r.l. ,  STMicroelectronics Application GMBH ,  STMicroelectronics (Alps) SAS

Inventor： Aldo Occhipinti ,  Christophe Roussel ,  Fritz Burkhardt ,  Ignazio Testoni

IPC: H02P7/03 ,  H02P7/29 ,  H03K3/037 ,  H03K17/687 ,  E05F15/60

Abstract: An embodiment driver circuit comprises a power supply pin configured to receive a power supply voltage, and a set of control pins configured to provide a set of control signals for controlling switching of a set of switches of an h-bridge circuit comprising a pair of high-side switches and a pair of low-side switches. The driver circuit comprises control circuitry coupled to the control pins and configured to generate the control signals, and sensing circuitry coupled to the power supply pin and configured to generate a detection signal indicative of the power supply voltage exceeding a threshold value. The control circuitry is sensitive to the detection signal and is configured to generate the control signals to activate one of the pair of high-side switches and the pair of low-side switches and de-activate the other of the pair of high-side switches and the pair of low-side switches.

公开(公告)号：US20200287755A1

公开(公告)日：2020-09-10

申请号：US16800733

申请日：2020-02-25

Applicant: STMicroelectronics S.r.l.

Inventor： Domenico Massimo Porto ,  Giovanni Luca Torrisi ,  Ignazio Testoni

IPC: H04L25/03 ,  H03M1/12 ,  H04L12/40 ,  H04B17/345

Abstract: A method of compensating electromagnetic emissions of a device for use in a communication bus, the method including: transmitting a test signal over the communication bus; receiving, at the device, the test signal after propagation over the communication bus; performing frequency analysis processing of the test signal received to detect a set of harmonic components of the test signal received having an amplitude exceeding a certain threshold; storing respective values of frequency of harmonic components in the set of harmonic components having an amplitude exceeding the certain threshold; and generating and transmitting over the communication bus a set of compensation signals, each compensation signal in the set of compensation signals being a sinusoidal signal having a respective frequency equal to one of the frequencies stored, and being in anti-phase with respect to the harmonic component of the test signal received having the respective frequency.

公开(公告)号：US11973457B2

公开(公告)日：2024-04-30

申请号：US17323602

申请日：2021-05-18

Applicant: STMicroelectronics S.r.l. ,  STMicroelectronics Application GMBH ,  STMicroelectronics (Alps) SAS

Inventor： Aldo Occhipinti ,  Christophe Roussel ,  Fritz Burkhardt ,  Ignazio Testoni

IPC: H02P3/18 ,  E05F15/60 ,  H02P6/16 ,  H02P7/03 ,  H02P7/29 ,  H03K3/037 ,  H03K17/687 ,  B60J5/10 ,  B60R16/033

CPC classification number: H02P7/04 ,  E05F15/60 ,  H02P7/29 ,  H03K3/0377 ,  H03K17/6871 ,  B60J5/10 ,  B60R16/033 ,  E05Y2201/434 ,  E05Y2900/548 ,  H03K2217/0063 ,  H03K2217/0072 ,  H03K2217/0081

Abstract: An embodiment driver circuit comprises a power supply pin configured to receive a power supply voltage, and a set of control pins configured to provide a set of control signals for controlling switching of a set of switches of an h-bridge circuit comprising a pair of high-side switches and a pair of low-side switches. The driver circuit comprises control circuitry coupled to the control pins and configured to generate the control signals, and sensing circuitry coupled to the power supply pin and configured to generate a detection signal indicative of the power supply voltage exceeding a threshold value. The control circuitry is sensitive to the detection signal and is configured to generate the control signals to activate one of the pair of high-side switches and the pair of low-side switches and de-activate the other of the pair of high-side switches and the pair of low-side switches.

公开(公告)号：US11296910B2

公开(公告)日：2022-04-05

申请号：US16800733

申请日：2020-02-25

Applicant: STMicroelectronics S.r.l.

Inventor： Domenico Massimo Porto ,  Giovanni Luca Torrisi ,  Ignazio Testoni

IPC: H04L25/03 ,  H04B17/345 ,  H03M1/12 ,  H04L12/40

Abstract: A method of compensating electromagnetic emissions of a device for use in a communication bus, the method including: transmitting a test signal over the communication bus; receiving, at the device, the test signal after propagation over the communication bus; performing frequency analysis processing of the test signal received to detect a set of harmonic components of the test signal received having an amplitude exceeding a certain threshold; storing respective values of frequency of harmonic components in the set of harmonic components having an amplitude exceeding the certain threshold; and generating and transmitting over the communication bus a set of compensation signals, each compensation signal in the set of compensation signals being a sinusoidal signal having a respective frequency equal to one of the frequencies stored, and being in anti-phase with respect to the harmonic component of the test signal received having the respective frequency.