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.

公开(公告)号：US20230261657A1

公开(公告)日：2023-08-17

申请号：US18307994

申请日：2023-04-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kyoung Min Lee ,  James M. Walden ,  Brian Linehan ,  Yang Zhang

IPC: H03K19/003 ,  H03K17/16 ,  H03K17/081 ,  H03K17/0812

CPC classification number: H03K19/00384 ,  H03K17/166 ,  H03K17/08104 ,  H03K17/08122 ,  H03K17/0812 ,  H03K17/163

Abstract: In a transistor turnoff system, a transistor control circuit is configured to adjust a control voltage at a transistor control output responsive to a comparison signal at a control input. The control voltage has a slew rate. A comparator has a comparator output and first and second comparator inputs. The first comparator input is coupled to the transistor control output. The comparator is configured to: provide the comparison signal at the comparator output based on a reference voltage at the second comparator input; and deactivate the transistor control circuit by changing a state of the comparison signal responsive to the control voltage falling below the reference voltage. A slew-rate compensator is configured to increase the reference voltage by a compensation voltage that compensates for a time delay of the comparator or the transistor control circuit. The compensation voltage is proportional to the slew rate.

公开(公告)号：US11283448B2

公开(公告)日：2022-03-22

申请号：US17078329

申请日：2020-10-23

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kyoung Min Lee ,  James Michael Walden ,  Brian Jude Linehan ,  Yang Zhang

IPC: H03K17/16 ,  H03K19/003 ,  H03K17/081 ,  H03K17/0812

Abstract: One example includes a circuit that includes a transistor control circuit having an input and an output adapted to be coupled to the output of the transistor control circuit and can provide a slew-rate compensation voltage proportional to a slew-rate of a control voltage of the transistor. A reference voltage source can be coupled to the slew-rate compensator to provide a reference voltage at the output of the reference voltage source, the slew-rate compensator configured to add the slew-rate compensation voltage to the reference voltage to provide an adjusted reference voltage at the output of the slew rate compensator. A reference comparator having a first input, a second input and an output is coupled to the input of the transistor control circuit. The first input can be coupled to the control terminal of the transistor, and the second input can be coupled to the output of the slew-rate compensator.

公开(公告)号：US20240405017A1

公开(公告)日：2024-12-05

申请号：US18325376

申请日：2023-05-30

Applicant: Texas Instruments Incorporated

Inventor： Dong Seup Lee ,  Sunglyong Kim ,  Kyoung Min Lee

IPC: H01L27/06 ,  H01L29/66

Abstract: A microelectronic device including an integrated boot diode and a depleted mode LDMOS transistor with a charge balance layer isolated from the body region and electrically in contact with a substrate. The connection of the charge balance layer of the depleted mode LDMOS transistor directly to the substrate or ground reference eliminates body diode turn-on from the body of the transistor to the drain which typically happens above approximately 0.7 volts. In addition, the depleted mode LDMOS transistor may separate a source contact from a body contact which allows a negative bias of the body with respect to the source. Typically, the source voltage is limited to approximately 7 volts before parasitic PNP turn on becomes a factor. By negatively biasing the body with respect to the source, the maximum source voltage of the depleted mode LDMOS transistor without PNP parasitic turn-on may be increased to approximately 30 V.

公开(公告)号：US20240404929A1

公开(公告)日：2024-12-05

申请号：US18325708

申请日：2023-05-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kapil Sahasrabudhe ,  Kyoung Min Lee ,  Philomena Brady

IPC: H01L23/495 ,  H01L23/00

Abstract: An electronic device includes a leadframe having a die pad and leads. A die having an active side is attached to the die pad. The die further includes a dielectric layer deposited on a side of the die opposite that of the active side and an die attach film deposited on the dielectric layer. Wire bonds are attached from the active side of the die to the leads. A critical signal wire bond is attached from the active side of the die to the die pad. A mold compound encapsulates the die, the wire bonds, the critical signal wire bond, and a portion of the leadframe. A stacked formation of the die, the dielectric layer, and the die attach film form a capacitor that filters noise from a critical signal carried by the critical signal wire bond.

公开(公告)号：US11671098B2

公开(公告)日：2023-06-06

申请号：US17700354

申请日：2022-03-21

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kyoung Min Lee ,  James M. Walden ,  Brian Linehan ,  Yang Zhang

IPC: H03K19/003 ,  H03K17/16 ,  H03K17/081 ,  H03K17/0812

CPC classification number: H03K19/00384 ,  H03K17/0812 ,  H03K17/08104 ,  H03K17/08122 ,  H03K17/163 ,  H03K17/166

Abstract: In a transistor turnoff system, a transistor control circuit is configured to adjust a control voltage at a transistor control output responsive to a comparison signal at a control input. The control voltage has a slew rate. A comparator has a comparator output and first and second comparator inputs. The first comparator input is coupled to the transistor control output. The comparator is configured to: provide the comparison signal at the comparator output based on a reference voltage at the second comparator input; and deactivate the transistor control circuit by changing a state of the comparison signal responsive to the control voltage falling below the reference voltage. A slew-rate compensator is configured to increase the reference voltage by a compensation voltage that compensates for a time delay of the comparator or the transistor control circuit. The compensation voltage is proportional to the slew rate.

公开(公告)号：US20220216872A1

公开(公告)日：2022-07-07

申请号：US17700354

申请日：2022-03-21

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kyoung Min Lee ,  James M. Walden ,  Brian Linehan ,  Yang Zhang

IPC: H03K19/003 ,  H03K17/16 ,  H03K17/081 ,  H03K17/0812

Abstract: In a transistor turnoff system, a transistor control circuit is configured to adjust a control voltage at a transistor control output responsive to a comparison signal at a control input. The control voltage has a slew rate. A comparator has a comparator output and first and second comparator inputs. The first comparator input is coupled to the transistor control output. The comparator is configured to: provide the comparison signal at the comparator output based on a reference voltage at the second comparator input; and deactivate the transistor control circuit by changing a state of the comparison signal responsive to the control voltage falling below the reference voltage. A slew-rate compensator is configured to increase the reference voltage by a compensation voltage that compensates for a time delay of the comparator or the transistor control circuit. The compensation voltage is proportional to the slew rate.

公开(公告)号：US20250062766A1

公开(公告)日：2025-02-20

申请号：US18490961

申请日：2023-10-20

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kyoung Min Lee ,  Satish Vemuri

IPC: H03K19/0185 ,  H03K5/24

Abstract: A driver includes a current generator having an input and first and second outputs. The current generator generates a first current at the first output while a signal at the input is at a first logic state and generates a second current at the second output while the signal at the input is at a second logic state. A comparator has a first comparator input, a second comparator input, and a first comparator output, and a second comparator output. The first comparator input is coupled to the first output, and the second comparator input is coupled to the second output. A latch has a first latch input, a second latch input, and a latch output. The first latch input is coupled to the first comparator output, and the second latch input is coupled to the second comparator output. A gate control circuit has an input coupled to the latch output.

公开(公告)号：US20210126636A1

公开(公告)日：2021-04-29

申请号：US17078329

申请日：2020-10-23

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kyoung Min Lee ,  James Michael Walden ,  Brian Jude Linehan ,  Zhang Yang

IPC: H03K19/003 ,  H03K17/16

Abstract: One example includes a circuit that includes a transistor control circuit having an input and an output adapted to be coupled to the output of the transistor control circuit and can provide a slew-rate compensation voltage proportional to a slew-rate of a control voltage of the transistor. A reference voltage source can be coupled to the slew-rate compensator to provide a reference voltage at the output of the reference voltage source, the slew-rate compensator configured to add the slew-rate compensation voltage to the reference voltage to provide an adjusted reference voltage at the output of the slew rate compensator. A reference comparator having a first input, a second input and an output is coupled to the input of the transistor control circuit. The first input can be coupled to the control terminal of the transistor, and the second input can be coupled to the output of the slew-rate compensator.

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.