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公开(公告)号：US10574226B2
公开(公告)日：2020-02-25
申请号：US15896952
申请日：2018-02-14
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Navaneeth Kumar Narayanasamy , Salil Chellappan , Apoorva Awasthy
IPC: H03K17/0812 , H03K17/0814 , H02H3/08 , H02H7/20
Abstract: In some examples, a gate driver includes a gate sense pin and a gate sense circuit configured to couple to a node of a transistor via the gate sense pin. The gate sense circuit includes an overcurrent detection circuit configured to detect a first fault condition based on the node before the transistor turns on in a soft switching mode. The gate sense circuit also includes a Miller plateau detection circuit configured to detect a second fault condition based on the node when the transistor is turning on in a hard switching mode.
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公开(公告)号：US20190235010A1
公开(公告)日：2019-08-01
申请号：US16381224
申请日：2019-04-11
Applicant: Texas Instruments Incorporated
Inventor： Navaneeth Kumar Narayanasamy , Manu Balakrishnan
CPC classification number: G01R31/06 , G01D5/2006 , G01R31/2829 , H01F7/1844 , H01F2007/185
Abstract: An apparatus and method of detecting movement of a plunger of the solenoid includes detecting a peak (IPEAK) in a current signal applied to a coil of the solenoid. A predetermined threshold is added to the current signal applied to the coil of the solenoid to generate a level shifted signal. The level shifted signal and the peak signal are compared to detect movement of a plunger of the solenoid.
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公开(公告)号：US12289047B2
公开(公告)日：2025-04-29
申请号：US18587119
申请日：2024-02-26
Applicant: Texas Instruments Incorporated
Inventor： Navaneeth Kumar Narayanasamy , Manu Balakrishnan
Abstract: A circuit includes a first rectifier having a first rectifier input and a first rectifier output. The circuit also includes a bridge circuit and a second rectifier. The bridge circuit is coupled to the first rectifier output. The bridge circuit has first, second, third, and fourth terminals. The first and second terminals are coupled to the first rectifier output, and the third and fourth terminals are adapted to be coupled to a primary winding of a transformer. The second rectifier has a second rectifier input and a second rectifier output. The second rectifier input is adapted to be coupled to a secondary winding of the transformer.
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公开(公告)号：US11962234B2
公开(公告)日：2024-04-16
申请号：US17406762
申请日：2021-08-19
Applicant: Texas Instruments Incorporated
Inventor： Navaneeth Kumar Narayanasamy , Manu Balakrishnan
Abstract: A circuit includes a first rectifier having a first rectifier input and a first rectifier output. The circuit also includes a bridge circuit and a second rectifier. The bridge circuit is coupled to the first rectifier output. The bridge circuit has first, second, third, and fourth terminals. The first and second terminals are coupled to the first rectifier output, and the third and fourth terminals are adapted to be coupled to a primary winding of a transformer. The second rectifier has a second rectifier input and a second rectifier output. The second rectifier input is adapted to be coupled to a secondary winding of the transformer.
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公开(公告)号：US20240079950A1
公开(公告)日：2024-03-07
申请号：US18507613
申请日：2023-11-13
Applicant: Texas Instruments Incorporated
Inventor： Navaneeth Kumar Narayanasamy
IPC: H02M1/38 , H02M1/00 , H02M1/08 , H02M7/5395
CPC classification number: H02M1/38 , H02M1/0009 , H02M1/08 , H02M7/5395
Abstract: A pulse width modulator circuit with circuitry for providing a first and second pulse width modulation signal with dead time periods between the first and second pulse width modulation signals, an input for receiving a signal representative of a current in a load adapted to be driven in response to the first and second pulse width modulation signals, and circuitry coupled to the input for adjusting the dead time periods in response to the signal representative of a current.
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Patent Agency Ranking
公开(公告)号：US20230072415A1
公开(公告)日：2023-03-09
申请号：US18054974
申请日：2022-11-14
Applicant: Texas Instruments Incorporated
Inventor： Navaneeth Kumar Narayanasamy , Martin Staebler
Abstract: A motor system with an input for coupling to a motor control signal that, when presented in a predetermined state, indicates a motor receiving power should be disabled from rotating. The system also includes controller circuitry for providing a disabling signal to motor rotation, independent of processor software control signaling and the power, in response to the control signal.
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公开(公告)号：US11502629B2
公开(公告)日：2022-11-15
申请号：US17137598
申请日：2020-12-30
Applicant: Texas Instruments Incorporated
Inventor： Navaneeth Kumar Narayanasamy , Martin Staebler
Abstract: A motor system with an input for coupling to a motor control signal that, when presented in a predetermined state, indicates a motor receiving power should be disabled from rotating. The system also includes controller circuitry for providing a disabling signal to motor rotation, independent of processor software control signaling and the power, in response to the control signal.
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公开(公告)号：US11255887B2
公开(公告)日：2022-02-22
申请号：US16669687
申请日：2019-10-31
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Navaneeth Kumar Narayanasamy
Abstract: A current measurement circuit includes first, second, and third conductors, a first current sensor, a second current sensor, and current computation circuitry. The first conductor is configured to conduct a first phase current of a three-phase current. The second conductor is configured to conduct a second phase current of the three-phase current. The third conductor is configured to conduct a third phase current of the three-phase current. The first current sensor is coupled to the first, the second, and the third conductors. The second current sensor is coupled to the second conductor and the third conductor. The current computation circuitry is coupled to the first current sensor and the second current sensor, and is configured to determine the first current, the second current, and the third current by applying an inverse Clarke transform to the output of the first current sensor and the output of the second current sensor.
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公开(公告)号：US10317453B2
公开(公告)日：2019-06-11
申请号：US16006880
申请日：2018-06-13
Applicant: Texas Instruments Incorporated
Inventor： Navaneeth Kumar Narayanasamy , Manu Balakrishnan
Abstract: An apparatus and method of detecting movement of a plunger of the solenoid includes detecting a peak (IPEAK) in a current signal applied to a coil of the solenoid. A predetermined threshold is added to the current signal applied to the coil of the solenoid to generate a level shifted signal. The level shifted signal and the peak signal are compared to detect movement of a plunger of the solenoid.
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公开(公告)号：US20240213975A1
公开(公告)日：2024-06-27
申请号：US18438707
申请日：2024-02-12
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Navaneeth Kumar Narayanasamy
Abstract: An electronic circuit for controlling a power switch having a gate input, includes a signal generator configured to generate a gate driver input signal. The gate driver input signal has a first voltage during a first period of time, a second voltage during a second period of time, and toggles between the first voltage and the second voltage during a third period of time. The electronic circuit also includes a gate driver configured to receive the gate driver input signal and to provide a gate driver output signal based on the gate driver input signal. The signal generator is configured to cause the gate driver input signal to toggle during the third period of time such that the gate driver output signal has a third voltage during the second period of time, and an intermediate voltage that is less than the third voltage during the third period of time.
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