公开(公告)号：US20180351765A1

公开(公告)日：2018-12-06

申请号：US15854583

申请日：2017-12-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Abhijeeth Aarey Premanath ,  Richard Edwin Hubbard ,  Maxwell Guy Robertson ,  Lokesh Kumar Gupta ,  Mark Edward Wentroble ,  Roland Sperlich ,  Dejan Radic

IPC: H04L12/40 ,  H04L12/12

CPC classification number: H04L12/40032 ,  H04L12/12 ,  H04L12/40039 ,  H04L2012/40215 ,  H04L2012/40273

Abstract: Two CAN bus transceivers utilized in a single integrated circuit package with the CAN bus connections between the two transceivers being inverted. Thus, one transceiver is connected to the CAN bus high and low lines while the other transceiver is connected to the CAN bus low and high lines. Both transceivers power up in a standby condition and each transceiver is monitoring for wake up signals on the CAN bus. The transceiver that is correctly connected to the CAN bus detects wake up signals. When the wake up signals are detected at that transceiver, that transceiver is brought to full operating state and the other transceiver is placed in a full standby condition. Additional input resistance is provided with each transceiver to maintain the proper input resistance for the integrated circuit.

公开(公告)号：US20210211039A1

公开(公告)日：2021-07-08

申请号：US16736235

申请日：2020-01-07

Applicant: Texas Instruments Incorporated

Inventor： Yihuang Lin ,  Abhijeeth Aarey Premanath ,  Anant Shankar Kamath

IPC: H02M1/32 ,  H02M7/06

Abstract: A circuit for providing input surge protection in a digital input module, the circuit comprising a surge protection input stage, including a bridge rectifier coupled to receive the bidirectional input signal, and coupled to the unidirectional input of the digital input module. The bridge rectifier comprises TVS rectifiers TVS1 and TVS2, and diode rectifiers D2 and D3, intercoupled in a bridge rectifier configuration in which: TVS1 and TVS4 are transient voltage suppression diodes; and rectifiers D2 and D3 are rectifier diodes. Diodes TVS1 and TVS4 can be implemented as either respective unidirectional TVS diodes; or a single bidirectional TVS diode. The digital input module can be a digital input receiver, or a opto-isolator/coupler, or other digital input module.

公开(公告)号：US11342835B2

公开(公告)日：2022-05-24

申请号：US16736235

申请日：2020-01-07

Applicant: Texas Instruments Incorporated

Inventor： Yihuang Lin ,  Abhijeeth Aarey Premanath ,  Anant Shankar Kamath

IPC: H02M1/32 ,  H02M7/06

Abstract: A circuit for providing input surge protection in a digital input module, the circuit comprising a surge protection input stage, including a bridge rectifier coupled to receive the bidirectional input signal, and coupled to the unidirectional input of the digital input module. The bridge rectifier comprises TVS rectifiers TVS1 and TVS2, and diode rectifiers D2 and D3, intercoupled in a bridge rectifier configuration in which: TVS1 and TVS4 are transient voltage suppression diodes; and rectifiers D2 and D3 are rectifier diodes. Diodes TVS1 and TVS4 can be implemented as either respective unidirectional TVS diodes; or a single bidirectional TVS diode. The digital input module can be a digital input receiver, or a opto-isolator/coupler, or other digital input module.

公开(公告)号：US10560282B2

公开(公告)日：2020-02-11

申请号：US15854583

申请日：2017-12-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Abhijeeth Aarey Premanath ,  Richard Edwin Hubbard ,  Maxwell Guy Robertson ,  Lokesh Kumar Gupta ,  Mark Edward Wentroble ,  Roland Sperlich ,  Dejan Radic

IPC: H04L12/40 ,  H04L12/12

Abstract: Two CAN bus transceivers utilized in a single integrated circuit package with the CAN bus connections between the two transceivers being inverted. Thus, one transceiver is connected to the CAN bus high and low lines while the other transceiver is connected to the CAN bus low and high lines. Both transceivers power up in a standby condition and each transceiver is monitoring for wake up signals on the CAN bus. The transceiver that is correctly connected to the CAN bus detects wake up signals. When the wake up signals are detected at that transceiver, that transceiver is brought to full operating state and the other transceiver is placed in a full standby condition. Additional input resistance is provided with each transceiver to maintain the proper input resistance for the integrated circuit.

公开(公告)号：US10884069B2

公开(公告)日：2021-01-05

申请号：US16101213

申请日：2018-08-10

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Richard Edwin Hubbard ,  Abhijeeth Aarey Premanath ,  Terry Mayhugh ,  Mark Edward Wentroble ,  Wesley Ryan Ray

IPC: G01R31/02 ,  H04L12/24 ,  G01R19/25 ,  G01R31/50 ,  H04L12/40

Abstract: A CAN bus transceiver includes CAN bus fault detection circuitry that can provide detailed information to simplify the task of the service technician when there is a CAN bus fault. Voltage and current measurements of the CAN bus are made and from them a fault type is determined. A time-domain reflectometer monitors the CAN bus signals for transmitted and reflected signals and from them a distance to the fault is determined. Either or both values are provided to a service technician to allow error determination and correction.

公开(公告)号：US10014760B2

公开(公告)日：2018-07-03

申请号：US15395370

申请日：2016-12-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Shailendra Kumar Baranwal ,  Alan Stephen Bass ,  Vighnesh Rudra Das ,  Anant Shankar Kamath ,  Abhijeeth Aarey Premanath

IPC: H02M1/08 ,  H02M3/335

CPC classification number: H02M1/08 ,  H02M1/36 ,  H02M3/33515 ,  H03K17/163 ,  H03K17/164

Abstract: One example includes a switch circuit. The switch circuit includes a transistor configured to activate in response to an activation voltage at an activation terminal of the transistor. The switch circuit also includes a current source coupled to the activation terminal and being configured to generate an activation current. The switch circuit further includes a driver control circuit interconnecting the activation terminal and a voltage rail. The driver control circuit includes digital counter logic configured to cycle through a predetermined number of count values based on an oscillator signal. The driver control circuit is configured to adjust an amplitude of the activation voltage at each of the predetermined number of count values based on the activation current to provide a soft-start activation of the transistor.