公开(公告)号：US20150097539A1

公开(公告)日：2015-04-09

申请号：US14518776

申请日：2014-10-20

Applicant: Texas Instruments Incorporated

Inventor： Scott E. Ragona ,  Rengang Chen ,  David Jauregui

IPC: H02M3/158

CPC classification number: H02M3/1588 ,  H02M2001/0009 ,  Y02B70/1466

Abstract: A switching converter having a high-side switching transistor and a low-side switching transistor and an inductor, having a circuit for generating a simulated waveform representing a sawtooth inductor current waveform. A circuit for monitoring and voltage at a switch node between the high-side and low-side transistors to determine a time during which the inductor current is increasing and a time during which the inductor current is decreasing wherein voltage across the low-side transistor when it is conducting represents a first portion of the simulated sawtooth inductor current waveform. A circuit for utilizing the time when the inductor current is increasing, the time when the inductor current is decreasing and the voltage across the low-side transistor when it is conducting to generate a portion of the simulated inductor current waveform when the high-side transistor is conducting. A method and a power supply utilizing this circuit are also disclosed.

Abstract translation: 一种具有高侧开关晶体管和低侧开关晶体管和电感器的开关转换器，具有用于产生表示锯齿波电感电流波形的模拟波形的电路。 用于在高侧和低侧晶体管之间的开关节点处监视和电压的电路，以确定电感器电流增加的时间和电感器电流下降的时间，其中低侧晶体管的电压 它是导电表示模拟锯齿电感器电流波形的第一部分。 电路用于利用电感电流增加的时间，电感电流下降的时间和低侧晶体管导通时的电压，以在高侧晶体管产生模拟电感电流波形时产生一部分 正在进行。 还公开了一种利用该电路的方法和电源。

公开(公告)号：US11682900B2

公开(公告)日：2023-06-20

申请号：US17339576

申请日：2021-06-04

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Rajesh Venugopal ,  Matthew John Ascher Schurmann ,  Preetam Charan Anand Tadeparthy ,  Rengang Chen

IPC: H02J1/10 ,  G06F1/3203 ,  H02M3/158

CPC classification number: H02J1/106 ,  G06F1/3203 ,  H02M3/158

Abstract: A system includes a first power stage circuit having a first PWM input, a first voltage input and a first power output. The first power stage circuit is configured to provide a first current at the first power output responsive to a PWM signal at the first PWM input, and configured to receive a voltage at the first voltage input. The system includes a second power stage circuit having a second PWM input, a second voltage input and a second power output. The second voltage input is coupled to the first voltage input, and the second power stage circuit is configured to provide a second current at the second power output responsive to the PWM signal at the second PWM input. The second power stage circuit is configured to receive the voltage at the second voltage input, the voltage representing an average of the first current and the second current.

公开(公告)号：US20220231605A1

公开(公告)日：2022-07-21

申请号：US17152223

申请日：2021-01-19

Applicant: Texas Instruments Incorporated

Inventor： Scott Edward Ragona ,  Rengang Chen ,  Preetam Charan Anand Tadeparthy ,  Evan Michael Reutzel

IPC: H02M3/158 ,  H02M3/157 ,  H02M1/08

Abstract: A converter stage having a control pin, an input voltage pin, an output pin, a ground pin, a high-side switch coupled between the input voltage pin and the output pin, a low-side switch coupled between the output pin and the ground pin, a current sensor configured to detect a current at the output pin, and control logic coupled to the control pin and the current sensor. The control logic is configured to control switching of the high-side and the low-side switches in continuous conduction mode, discontinuous conduction mode, and body braking control for the converter stage in response to a first signal received via the control line and a second signal received from the current sensor. A driver controls switching, based on the detected current and sequential event tracking, between an on state and an off state.

公开(公告)号：US09966855B2

公开(公告)日：2018-05-08

申请号：US14518776

申请日：2014-10-20

Applicant: Texas Instruments Incorporated

Inventor： Scott E. Ragona ,  Rengang Chen ,  David Jauregui

IPC: H02M3/158 ,  H02M1/00

CPC classification number: H02M3/1588 ,  H02M2001/0009 ,  Y02B70/1466

Abstract: A switching converter having a high-side switching transistor and a low-side switching transistor and an inductor, having a circuit for generating a simulated waveform representing a sawtooth inductor current waveform. A circuit for monitoring and voltage at a switch node between the high-side and low-side transistors to determine a time during which the inductor current is increasing and a time during which the inductor current is decreasing wherein voltage across the low-side transistor when it is conducting represents a first portion of the simulated sawtooth inductor current waveform. A circuit for utilizing the time when the inductor current is increasing, the time when the inductor current is decreasing and the voltage across the low-side transistor when it is conducting to generate a portion of the simulated inductor current waveform when the high-side transistor is conducting. A method and a power supply utilizing this circuit are also disclosed.

公开(公告)号：US11569744B2

公开(公告)日：2023-01-31

申请号：US17152223

申请日：2021-01-19

Applicant: Texas Instruments Incorporated

Inventor： Scott Edward Ragona ,  Rengang Chen ,  Preetam Charan Anand Tadeparthy ,  Evan Michael Reutzel

IPC: H02M3/158 ,  H02M1/08 ,  H02M1/00

Abstract: A converter stage having a control pin, an input voltage pin, an output pin, a ground pin, a high-side switch coupled between the input voltage pin and the output pin, a low-side switch coupled between the output pin and the ground pin, a current sensor configured to detect a current at the output pin, and control logic coupled to the control pin and the current sensor. The control logic is configured to control switching of the high-side and the low-side switches in continuous conduction mode, discontinuous conduction mode, and body braking control for the converter stage in response to a first signal received via the control line and a second signal received from the current sensor. A driver controls switching, based on the detected current and sequential event tracking, between an on state and an off state.

公开(公告)号：US12206331B2

公开(公告)日：2025-01-21

申请号：US17875214

申请日：2022-07-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Rengang Chen ,  Bo Wang ,  Evan Reutzel ,  Dattatreya Baragur Suryanarayana ,  Bhaskar Ramachandran ,  Preetam Tadeparthy

IPC: H02M3/158 ,  H02M1/00

Abstract: A DC-DC converter includes a current sense circuit. The current sense circuit includes a sense current output, an inductor current measurement circuit, an inductor current emulation circuit, a first switch, and a second switch. The inductor current measurement circuit has an output. The inductor current emulation circuit has an output. The first switch is coupled between the output of the inductor current measurement circuit and the sense current output. The second switch is coupled between the output of the inductor current emulation circuit and the sense current output.

公开(公告)号：US20180226892A1

公开(公告)日：2018-08-09

申请号：US15942962

申请日：2018-04-02

Applicant: Texas Instruments Incorporated

Inventor： Scott E. Ragona ,  Rengang Chen ,  David Jauregui

IPC: H02M3/158 ,  H02M1/00

CPC classification number: H02M3/1588 ,  H02M2001/0009 ,  Y02B70/1466

Abstract: A switching converter having a high-side switching transistor and a low-side switching transistor and an inductor, having a circuit for generating a simulated waveform representing a sawtooth inductor current waveform. A circuit for monitoring and voltage at a switch node between the high-side and low-side transistors to determine a time during which the inductor current is increasing and a time during which the inductor current is decreasing wherein voltage across the low-side transistor when it is conducting represents a first portion of the simulated sawtooth inductor current waveform. A circuit for utilizing the time when the inductor current is increasing, the time when the inductor current is decreasing and the voltage across the low-side transistor when it is conducting to generate a portion of the simulated inductor current waveform when the high-side transistor is conducting. A method and a power supply utilizing this circuit are also disclosed.

公开(公告)号：US20250062700A1

公开(公告)日：2025-02-20

申请号：US18451363

申请日：2023-08-17

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Mohamed Ahmed ,  Matthew Schurmann ,  Preetam Tadeparthy ,  Rohit Narula ,  Vikram Gakhar ,  Vikas Lakhanpal ,  Karthik Anyam ,  Rengang Chen

IPC: H02M7/537

Abstract: A power controller comprises a control loop configured to control timing of pulsed signals that activate phases of a coupled inductor voltage regulator based on current demand of a load circuit and comprises a transient detection circuit configured to determine a projected current through a compensation inductor of the coupled inductor voltage regulator based on a state of the phases and operating parameters of the coupled inductor voltage regulator. The transient detection circuit is configured to detect a transient in the current demand of the load circuit based on a variability in phase-to-phase overlap of the pulsed signals. Responsive to detecting the transient, the transient detection circuit is configured to apply a correction to the control loop that alters the timing of the pulsed signals based on the projected current through the compensation inductor.

公开(公告)号：US20240405659A1

公开(公告)日：2024-12-05

申请号：US18326584

申请日：2023-05-31

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Mohamed Ahmed ,  Matthew Schurmann ,  Rengang Chen

IPC: H02M1/00 ,  H02M3/335

Abstract: A circuit includes a compensation inductor, a compensation resistor, and a current emulation circuit. The current emulation circuit has a time constant smaller than a time constant of the compensation inductor and the compensation resistor. The current emulation circuit includes a sense resistor having a first terminal coupled with a first terminal of the compensation inductor, and a sense capacitor having a first terminal coupled with a second terminal of the sense resistor and a second terminal coupled with ground.

公开(公告)号：US11949320B2

公开(公告)日：2024-04-02

申请号：US17678220

申请日：2022-02-23

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Vishnuvardhan Reddy Jaladanki ,  Preetam Charan Anand Tadeparthy ,  Scott Ragona ,  Rengang Chen ,  Evan Michael Reutzel ,  Bhaskar Ramachandran

IPC: H02M3/158 ,  H02M1/00

CPC classification number: H02M1/0009 ,  H02M3/158

Abstract: A device includes a current mirror, a switch, first and second current paths, first and second buffers, a variable resistor, a temperature-sensing circuit, and a controller. The first current path is coupled between the current mirror's input and the switch. The switch switches between ground and a transistor based on a control signal. The second current path is coupled between a first current mirror output and ground. The first buffer is coupled to a second current mirror output. The second buffer is coupled to the variable resistor, which is coupled to the first buffer. The temperature-sensing circuit provides a device temperature to the controller, which is coupled to a first buffer output and determines a first adjustment to the first and second current paths and a second adjustment to the variable resistor based on the device temperature.