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    Floating high-voltage level translator with adaptive bypass circuit
    1.
    发明授权
    Floating high-voltage level translator with adaptive bypass circuit 有权

    公开(公告)号：US11855630B2

    公开(公告)日：2023-12-26

    申请号：US17828797

    申请日：2022-05-31

    Applicant: Texas Instruments Incorporated

    Inventor： Tuli Luthuli Dake ,  Satish Kumar Vemuri

    IPC: H03K19/0175 ,  H03K19/0185 ,  H03K17/10 ,  H03K3/356 ,  H03K19/003

    CPC classification number: H03K19/018528 ,  H03K3/356113 ,  H03K17/102 ,  H03K19/00361 ,  H03K19/017509

    Abstract: Techniques are described herein to enhance capability of floating level translators. For example, increased headroom is accomplished by adaptively bypassing the protection elements of the voltage level translator. In an example, a floating level translator can translate an input signal from a low-voltage domain to a high-voltage domain. A bypass circuit is coupled across the protection elements. The bypass circuit selectively engages during low-voltage operation (e.g., thereby providing a lower loss path relative to loss caused by the high-voltage protection elements and thus increasing the headroom swing), and disengages responsive to the high-voltage reference rail of the high-voltage domain exceeding a threshold or otherwise being high enough (e.g., greater than the potential of the low-voltage domain power rail). The bypass circuit can be implemented in a relatively low-complexity manner (e.g., back-to-back high-voltage FETs) without additional signals to control low-voltage capability.

    Gate driver bootstrap circuits and related methods
    2.
    发明授权
    Gate driver bootstrap circuits and related methods 有权

    公开(公告)号：US11342911B2

    公开(公告)日：2022-05-24

    申请号：US16801746

    申请日：2020-02-26

    Applicant: Texas Instruments Incorporated

    Inventor： Kyoung Min Lee ,  Satish Kumar Vemuri ,  James Michael Walden

    IPC: H03K17/567 ,  H02M1/08 ,  H02M7/5387 ,  H02P27/08

    Abstract: Gate driver bootstrap circuits and related methods are disclosed. An example gate driver stage includes a first terminal and a second terminal, the first terminal to be coupled to a capacitor, the capacitor and the second terminal to be coupled to a gate terminal of a power transistor, a gate driver coupled to the first terminal and the second terminal, and a bootstrap circuit coupled to the first terminal, the second terminal, and the gate driver, the bootstrap circuit including a control stage circuit having an output and a first transistor having a first gate terminal and a first current terminal, the first gate terminal coupled to the output, the first current terminal coupled to the first terminal.

    FLOATING HIGH-VOLTAGE LEVEL TRANSLATOR WITH ADAPTIVE BYPASS CIRCUIT
    3.
    发明公开
    FLOATING HIGH-VOLTAGE LEVEL TRANSLATOR WITH ADAPTIVE BYPASS CIRCUIT 审中-公开

    公开(公告)号：US20240080028A1

    公开(公告)日：2024-03-07

    申请号：US18507502

    申请日：2023-11-13

    Applicant: Texas Instruments Incorporated

    Inventor： Tuli Luthuli Dake ,  Satish Kumar Vemuri

    IPC: H03K19/0185 ,  H03K3/356 ,  H03K17/10 ,  H03K19/003 ,  H03K19/0175

    CPC classification number: H03K19/018528 ,  H03K3/356113 ,  H03K17/102 ,  H03K19/00361 ,  H03K19/017509

    Abstract: Techniques are described herein to enhance capability of floating level translators. For example, increased headroom is accomplished by adaptively bypassing the protection elements of the voltage level translator. In an example, a floating level translator can translate an input signal from a low-voltage domain to a high-voltage domain. A bypass circuit is coupled across the protection elements. The bypass circuit selectively engages during low-voltage operation (e.g., thereby providing a lower loss path relative to loss caused by the high-voltage protection elements and thus increasing the headroom swing), and disengages responsive to the high-voltage reference rail of the high-voltage domain exceeding a threshold or otherwise being high enough (e.g., greater than the potential of the low-voltage domain power rail). The bypass circuit can be implemented in a relatively low-complexity manner (e.g., back-to-back high-voltage FETs) without additional signals to control low-voltage capability.

    Signal chatter mitigation
    5.
    发明授权
    Signal chatter mitigation 有权

    公开(公告)号：US12237836B2

    公开(公告)日：2025-02-25

    申请号：US17710533

    申请日：2022-03-31

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Kyoung Min Lee ,  Satish Kumar Vemuri ,  Zhidong Liu ,  Maxim James Franke ,  Kory Andrew McCarthy

    IPC: H03K5/00 ,  H03K3/012 ,  H03K5/1252

    Abstract: In some examples, a circuit includes a capacitor having a first terminal and a second terminal, the first terminal coupled to a voltage supply terminal of the circuit. The circuit also includes a transistor having a transistor gate, a transistor drain, and a transistor source, the transistor source coupled to ground and the transistor drain coupled to an input terminal of the circuit. The transistor is configured to conduct responsive to a gate signal received at the transistor gate, the gate signal based on a signal provided at the second terminal of the capacitor. The circuit also includes a Schmitt trigger having a Schmitt trigger input coupled to the transistor drain.

    Flyback converter with secondary side regulation
    6.
    发明授权
    Flyback converter with secondary side regulation 有权

    公开(公告)号：US12081134B2

    公开(公告)日：2024-09-03

    申请号：US18211318

    申请日：2023-06-19

    Applicant: Texas Instruments Incorporated

    Inventor： Satish Kumar Vemuri ,  James M. Walden ,  Isaac Cohen

    IPC: H02M3/335 ,  H02M1/00

    CPC classification number: H02M3/33592 ,  H02M3/33523 ,  H02M1/0009 ,  Y02B70/10

    Abstract: Disclosed examples include flyback converters, control circuits and methods to facilitate secondary side regulation of the output voltage. A primary side control circuit operates a primary side switch to independently initiate power transfer cycles to deliver power to a transformer secondary winding in a first mode. A secondary side control circuit operates a synchronous rectifier or secondary side switch to generate a predetermined cycle start request signal via a transformer auxiliary winding to assume secondary side regulation and to cause the primary side controller to initiate new power transfer cycles.

    FLYBACK CONVERTER WITH SECONDARY SIDE REGULATION
    8.
    发明公开
    FLYBACK CONVERTER WITH SECONDARY SIDE REGULATION 审中-公开

    公开(公告)号：US20230336089A1

    公开(公告)日：2023-10-19

    申请号：US18211318

    申请日：2023-06-19

    Applicant: Texas Instruments Incorporated

    Inventor： Satish Kumar Vemuri ,  James M. Walden ,  Isaac Cohen

    IPC: H02M3/335

    CPC classification number: H02M3/33592 ,  H02M3/33523 ,  Y02B70/10 ,  H02M1/0009

    Abstract: Disclosed examples include flyback converters, control circuits and methods to facilitate secondary side regulation of the output voltage. A primary side control circuit operates a primary side switch to independently initiate power transfer cycles to deliver power to a transformer secondary winding in a first mode. A secondary side control circuit operates a synchronous rectifier or secondary side switch to generate a predetermined cycle start request signal via a transformer auxiliary winding to assume secondary side regulation and to cause the primary side controller to initiate new power transfer cycles.

    Flyback converter with secondary side regulation
    9.
    发明授权
    Flyback converter with secondary side regulation 有权

    公开(公告)号：US11722067B2

    公开(公告)日：2023-08-08

    申请号：US15987493

    申请日：2018-05-23

    Applicant: Texas Instruments Incorporated

    Inventor： Satish Kumar Vemuri ,  James M. Walden ,  Isaac Cohen

    IPC: H02M3/335 ,  H02M1/00

    CPC classification number: H02M3/33592 ,  H02M3/33523 ,  H02M1/0009 ,  Y02B70/10

    Abstract: Disclosed examples include flyback converters, control circuits and methods to facilitate secondary side regulation of the output voltage. A primary side control circuit operates a primary side switch to independently initiate power transfer cycles to deliver power to a transformer secondary winding in a first mode. A secondary side control circuit operates a synchronous rectifier or secondary side switch to generate a predetermined cycle start request signal via a transformer auxiliary winding to assume secondary side regulation and to cause the primary side controller to initiate new power transfer cycles.

    Wide high voltage swing input comparator stage with matching overdrive
    10.
    发明授权
    Wide high voltage swing input comparator stage with matching overdrive 有权

    公开(公告)号：US11569808B2

    公开(公告)日：2023-01-31

    申请号：US17515077

    申请日：2021-10-29

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Tuli Luthuli Dake ,  Satish Kumar Vemuri ,  Ritesh Jitendra Oza ,  Laszlo Balogh

    IPC: H03K5/00 ,  H03K5/24 ,  H03K19/003 ,  H03K17/08

    Abstract: An apparatus includes a differential input pair, a first resistor, a second resistor, and a comparator. The differential input pair having first and second differential inputs. The first differential input is adapted to be coupled to an output of a controller and the second differential input is adapted to be coupled to a signal ground of the controller. The first resistor is adapted to be coupled to a third resistor via the first differential input to form a first voltage divider. The second resistor is adapted to be coupled to a fourth resistor via the second differential input to form a second voltage divider. The comparator having first and second comparator inputs. The first comparator input is coupled between the first resistor and the first differential input. The second comparator input is coupled between the second resistor and the second differential input.

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