公开(公告)号：US11444618B2

公开(公告)日：2022-09-13

申请号：US16707160

申请日：2019-12-09

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Manu Balakrishnan

IPC: H03K17/56 ,  H02M7/217 ,  H03K4/06

Abstract: An electrical system includes a motor and a plurality of switch pairs, each switch pair having a high-side switch, a low-side switch, and a switch node coupled to the motor. The electrical system also includes gate driver circuitry coupled to each switch of the plurality of switch pairs. The electrical system also includes a controller coupled to the gate driver circuitry. The controller is configured to direct the gate driver circuitry to provide a first set of gate drive signals together with (i.e., overlapping pulses) a second set of gate drive signals, wherein the first set of gate drive signals is phase-shifted relative to the second set of gate drive signals.

公开(公告)号：US11271562B2

公开(公告)日：2022-03-08

申请号：US17072289

申请日：2020-10-16

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Navaneeth Kumar Narayanasamy ,  Manu Balakrishnan ,  Miroslav Oljaca

IPC: H03K17/08 ,  H03K17/0812 ,  H03K17/082 ,  H03K17/687 ,  H03K17/76 ,  H03K17/693

Abstract: A solid-state relay circuit includes an isolator circuit, a first output terminal, a second output terminal, and an output switch. The output switch is coupled to the isolator circuit, and includes a first transistor, a second transistor, and a diode. The first transistor is coupled to the first output terminal. The second transistor is coupled to the first transistor and the second output terminal. The diode is coupled to the first transistor, the second transistor, and ground, and is configured to block current flow from ground to the first transistor and the second transistor. The isolator circuit is coupled to the output switch and is configured to activate the first transistor and the second transistor.

公开(公告)号：US20200287486A1

公开(公告)日：2020-09-10

申请号：US16807924

申请日：2020-03-03

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Manu Balakrishnan

IPC: H02P6/28 ,  H02P6/16 ,  H01F13/00

Abstract: A circuit comprises a multiphase gate driver to be coupled to a multiphase inverter for driving a multiphase motor. For each phase, the multi-phase gate driver is to, in accordance with a pulse width modulation (PWM) control signal, turn on and off a high side transistor of a given pair of high and low side transistors of the multiphase inverter, discontinue the PWM control signal turn to the high side transistor of the given pair and turn off the high side transistor of the given pair, and turn on the low side transistor of the given pair until a current level through the low side transistor falls below a threshold, at which time, turn off the low side transistor.

公开(公告)号：US10581351B2

公开(公告)日：2020-03-03

申请号：US15972688

申请日：2018-05-07

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Manu Balakrishnan

IPC: H02P6/28 ,  H02P6/16 ,  H01F13/00

Abstract: A circuit comprises a multiphase gate driver to be coupled to a multiphase inverter for driving a multiphase motor. For each phase, the multi-phase gate driver is to, in accordance with a pulse width modulation (PWM) control signal, turn on and off a high side transistor of a given pair of high and low side transistors of the multiphase inverter, discontinue the PWM control signal turn to the high side transistor of the given pair and turn off the high side transistor of the given pair, and turn on the low side transistor of the given pair until a current level through the low side transistor falls below a threshold, at which time, turn off the low side transistor.

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

IPC: G01R31/06 ,  H01F7/18 ,  G01D5/20

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.