公开(公告)号：US20230378869A1

公开(公告)日：2023-11-23

申请号：US18229755

申请日：2023-08-03

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Naman BAFNA ,  Preetam Charan Anand TADEPARTHY ,  Ammineni BALAJI ,  Sreelakshmi SURESH ,  Mayank JAIN

IPC: H02M3/157 ,  H02M1/084 ,  H02M1/00

CPC classification number: H02M3/157 ,  H02M1/0845 ,  H02M1/0009

Abstract: In an example, a method includes storing a pending PWM pulse for a switching voltage regulator. The method also includes determining a switching voltage regulator is operating in a current limit mode, where an inductor current is above a current limit threshold. The method includes providing a predetermined number of PWM pulses in the current limit mode. The method also includes, responsive to providing the predetermined number of PWM pulses, ceasing storage of pending PWM pulses for the switching voltage regulator.

公开(公告)号：US20230130783A1

公开(公告)日：2023-04-27

申请号：US17682747

申请日：2022-02-28

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Naman BAFNA ,  Cheng Wei Chen ,  Preetam Charan Anand Tadeparthy ,  Sreelakshmi Suresh ,  Ammineni Balaji Balaji

IPC: H02M3/158 ,  H02M1/00

Abstract: An example circuit includes a loop controller having current phase inputs, a feedback input, a control loop output and a transient event output. The feedback input is adapted to be coupled to an output terminal of a multi-phase power stage. A PWM circuit has a blanking input, a control input and a PWM output, the control input coupled to the control loop output. A phase management circuit has a transient detect input, a PWM input, a blanking output and phase outputs. The transient detect input is coupled to the transient event output. The PWM input is coupled to the PWM output and the blanking output is coupled to the blanking input. Each of the phase outputs is adapted to be coupled to a respective phase of the multi-phase power stage. The phase management circuit is configured to provide a blanking control signal representative of a variable blanking time.

公开(公告)号：US20220393588A1

公开(公告)日：2022-12-08

申请号：US17490671

申请日：2021-09-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Naman BAFNA ,  Preetam Charan Anand TADEPARTHY ,  Ammineni BALAJI ,  Sreelakshmi SURESH ,  Mayank JAIN

IPC: H02M3/157 ,  H02M1/00 ,  H02M1/084

Abstract: In an example, a method includes storing a pending PWM pulse for a switching voltage regulator. The method also includes determining a switching voltage regulator is operating in a current limit mode, where an inductor current is above a current limit threshold. The method includes providing a predetermined number of PWM pulses in the current limit mode. The method also includes, responsive to providing the predetermined number of PWM pulses, ceasing storage of pending PWM pulses for the switching voltage regulator.

公开(公告)号：US20220209658A1

公开(公告)日：2022-06-30

申请号：US17138484

申请日：2020-12-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Naman BAFNA ,  Muthusubramanian VENKATESWARAN ,  Mayank JAIN ,  Vikram GAKHAR ,  Vikas LAKHANPAL ,  Preetam Charan Anand TADEPARTHY ,  Pamidi RAMASIDDAIAH

IPC: H02M3/155 ,  H02M1/08 ,  H03K5/24

Abstract: In some examples, a circuit includes a state machine. The state machine is configured to operate in a first state in which the state machine gates a pulse width modulation (PWM) signal provided for control of a power converter according to a first signal provided by a voltage control loop. The state machine is configured to operate in a second state in which the state machine gates the PWM signal according to a second signal provided by a current limit comparator. The state machine is configured to transition from the first state to the second state responsive to the second signal being asserted after the first signal is asserted in a switching cycle of the power converter. The state machine is configured to transition from the current state to the first state responsive to the first signal being asserted after the second signal in a switching cycle of the power converter.