公开(公告)号：US20240113611A1

公开(公告)日：2024-04-04

申请号：US17956100

申请日：2022-09-29

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Maik Peter KAUFMANN ,  Stefan HERZER ,  Michael LUEDERS

IPC: H02M1/00 ,  H02M3/158 ,  H03K17/16

CPC classification number: H02M1/0029 ,  H02M3/1584 ,  H03K17/163 ,  H03K2217/0063 ,  H03K2217/0072

Abstract: A circuit includes a half-bridge circuit is configured to provide a switching voltage responsive to respective high-side and low-side drive signals. High-side slew control circuitry is configured to provide a high-side slew-compensated control signal responsive to a high-side enable signal and a slew current signal representative of a slew rate at a switching output. A high-side driver is configured to provide the high-side drive signal responsive to the high-side slew-compensated control signal. Low-side slew control circuitry is configured to provide a low-side slew-compensated drive signal responsive to a low-side enable signal and the slew current signal. A low-side driver is configured to provide the low-side drive signal responsive to the low-side slew-compensated control signal. A capacitor is coupled between the high-side and low-side slew control circuitry and is configured to convert the slew rate to the slew current signal.

公开(公告)号：US20230387817A1

公开(公告)日：2023-11-30

申请号：US17829035

申请日：2022-05-31

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sombuddha CHAKRABORTY ,  Taisuke KAZAMA ,  Nicola BERTONI ,  Dongbin HOU ,  Raul BLECIC ,  Stefan HERZER

IPC: H02M3/335 ,  H02M1/00

CPC classification number: H02M3/33592 ,  H02M1/0058

Abstract: A voltage converter includes a switch network, a rectifier, and a transformer coupled between the switch network and the rectifier. The voltage converter includes an adaptive ON-time generation circuit having a control input and a control output, the control input. The adaptive ON-time generation circuit is configured to receive a WAKE signal to turn ON the switch network, generate a signal indicative of an OFF time of the switch network, and determine an ON time for the switch network based on the signal indicative of the OFF time.

公开(公告)号：US20220158554A1

公开(公告)日：2022-05-19

申请号：US16950660

申请日：2020-11-17

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Neil GIBSON ,  Stefan HERZER

IPC: H02M3/158

Abstract: In some examples, a circuit comprises a first field effect transistor (FET) having a first gate adapted to couple to a reference voltage source, a first source coupled to a first current source, and a first drain coupled to a second current source. The circuit comprises a second FET having a second gate coupled to the first drain, a second drain coupled to the first current source, and a second source coupled to a first resistor. The circuit comprises a third FET having a third gate adapted to couple to a feedback loop of a voltage converter, a third source coupled to a third current source, and a third drain coupled to a fourth current source. The circuit comprises a fourth FET having a fourth gate coupled to the third drain, a fourth drain coupled to the third current source, and a fourth source coupled to a second resistor.

公开(公告)号：US20210344272A1

公开(公告)日：2021-11-04

申请号：US17376549

申请日：2021-07-15

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Neil GIBSON ,  Stefan HERZER

IPC: H02M3/158

Abstract: A voltage regulation circuit includes a switching output terminal, a high-side output transistor, a low-side output transistor, a high-side replica transistor, a low-side replica transistor, and a comparator circuit. The high-side output transistor is configured to drive the switching output terminal. The low-side output transistor is configured to drive the switching output terminal. The high-side replica transistor is coupled to the high-side output transistor. The low-side replica transistor is coupled to the high-side replica transistor and the low-side output transistor. The comparator circuit is coupled to the high-side replica transistor and the low-side replica transistor, and is configured to compare a signal received from both the high-side replica transistor and the low-side replica transistor to a ramp signal.

公开(公告)号：US20240421810A1

公开(公告)日：2024-12-19

申请号：US18337096

申请日：2023-06-19

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Saqib SATTI ,  Qiao YANG ,  Stefan HERZER

IPC: H03K17/0412 ,  H03K17/16

Abstract: A circuit includes a first transistor and a ringing control circuit. The first transistor is coupled between a power terminal and a switching terminal. The first transistor includes a first control terminal. The ringing control circuit is coupled between the power terminal and the first control terminal. The ringing control circuit includes a second transistor and a variable resistance circuit. The second transistor is coupled between the power terminal and the first control terminal. The second transistor has a second control terminal. The variable resistance circuit is coupled between the second control terminal and the switching terminal. The variable resistance circuit includes a control input coupled to the power terminal.

公开(公告)号：US20240258917A1

公开(公告)日：2024-08-01

申请号：US18161924

申请日：2023-01-31

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Saqib SATTI ,  Qiao YANG ,  Stefan HERZER

IPC: H02M3/158 ,  H02M1/14 ,  H02M1/32

CPC classification number: H02M3/158 ,  H02M1/143 ,  H02M1/325

Abstract: A circuit includes a transistor and a ringing control circuit. The transistor is coupled between an input voltage terminal and a switching terminal. The transistor includes a control terminal. The ringing control circuit has a control input and a control output. The control input is coupled to the switching terminal, and the control output is coupled to the control terminal.

公开(公告)号：US20240146177A1

公开(公告)日：2024-05-02

申请号：US18050220

申请日：2022-10-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Syed Wasif MEHDI ,  Stefan HERZER

IPC: H02M1/08 ,  H02M1/00 ,  H02M1/44

CPC classification number: H02M1/08 ,  H02M1/0054 ,  H02M1/44

Abstract: A gate driver circuit includes a charge pump circuit, a gate pull-up transistor, a resistor, and a capacitor. The charge pump circuit includes an output. The gate pull-up transistor includes a first current terminal, a second current terminal, and a control terminal. The first current terminal is coupled to the output of the charge pump circuit. The second current terminal is coupled to a gate drive output terminal. The resistor is coupled between the power input terminal and the control terminal. The capacitor is coupled between the control terminal and a ground terminal.

公开(公告)号：US20210159787A1

公开(公告)日：2021-05-27

申请号：US16694441

申请日：2019-11-25

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Neil GIBSON ,  Stefan HERZER

IPC: H02M3/158

Abstract: A voltage regulation circuit includes a switching output terminal, a high-side output transistor, a low-side output transistor, a high-side replica transistor, a low-side replica transistor, and a comparator circuit. The high-side output transistor is configured to drive the switching output terminal. The low-side output transistor is configured to drive the switching output terminal. The high-side replica transistor is coupled to the high-side output transistor. The low-side replica transistor is coupled to the high-side replica transistor and the low-side output transistor. The comparator circuit is coupled to the high-side replica transistor and the low-side replica transistor, and is configured to compare a signal received from both the high-side replica transistor and the low-side replica transistor to a ramp signal.