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公开(公告)号：US10291163B2
公开(公告)日：2019-05-14
申请号：US15142219
申请日：2016-04-29
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Alejandro Vera , Shyamsunder Balasubramanian , Toshio Yamanaka , Toru Tanaka
Abstract: A voltage regulator includes an output transistor, an error amplifier coupled to the output transistor, a cascode transistor coupled to the output transistor in series, and a cascode bias circuit coupled to the cascode transistor and the output transistor. The output transistor is configured to generate an output signal at a first voltage. The error amplifier is configured to receive a reference signal. The cascode bias circuit is configured to bias the cascode transistor such that, in response to a drain-to-source short circuit of the output transistor, the cascode transistor generates the output signal at the first voltage.
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公开(公告)号：US20230010450A1
公开(公告)日：2023-01-12
申请号：US17368360
申请日：2021-07-06
Applicant: Texas Instruments Incorporated
Inventor： Shyamsunder Balasubramanian , Michael Edwin Butenhoff , Toshio Yamanaka , Luis Eduardo Ossa
Abstract: An example apparatus includes a level shifter having a first supply input, a gate driver having a second supply input coupled to the first supply input and adapted to be coupled to a cathode of a diode, the gate driver having an output adapted to be coupled to a control terminal of a switch, and a current source circuit having an input and an output, the input adapted to be coupled to a power supply and the output adapted to be coupled to the first supply input, the second supply input and to a capacitor.
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Patent Agency Ranking
公开(公告)号：US11888391B2
公开(公告)日：2024-01-30
申请号：US17489233
申请日：2021-09-29
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Shyamsunder Balasubramanian , Kuangyu Chiang , Toshio Yamanaka , Luis Eduardo Ossa
CPC classification number: H02M3/07 , H02M1/08 , H02M1/32 , H03K17/063 , H03K2217/0081
Abstract: A device includes a charge pump configured to provide a current to a bootstrap capacitor responsive to a charge pump switch being closed. The device also includes a current limiter coupled in series between the charge pump switch and the charge pump. The current limiter is configured to receive a control signal from a controller that indicates whether the device is to operate in a first mode or in a second mode; responsive to the control signal indicating the first mode, allow a first value of current to the charge pump switch; and, responsive to the control signal indicating the second mode, limit the current to the charge pump switch to a second value. The second value is less than the first value.
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公开(公告)号：US11764664B2
公开(公告)日：2023-09-19
申请号：US17368360
申请日：2021-07-06
Applicant: Texas Instruments Incorporated
Inventor： Shyamsunder Balasubramanian , Michael Edwin Butenhoff , Toshio Yamanaka , Luis Eduardo Ossa
Abstract: An example apparatus includes a level shifter having a first supply input, a gate driver having a second supply input coupled to the first supply input and adapted to be coupled to a cathode of a diode, the gate driver having an output adapted to be coupled to a control terminal of a switch, and a current source circuit having an input and an output, the input adapted to be coupled to a power supply and the output adapted to be coupled to the first supply input, the second supply input and to a capacitor.
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公开(公告)号：US11722126B2
公开(公告)日：2023-08-08
申请号：US17463001
申请日：2021-08-31
Applicant: TEXAS INSTRUMENTS INCORPORATED
Abstract: A system includes a level shifter coupled to a voltage source, a first transistor, and a second transistor. The system also includes a first current source coupled to the first transistor and the second transistor and configured to bias the first transistor and the second transistor. The system includes a slew detector coupled to the voltage source and to the first current source, where the slew detector is configured to detect a change in voltage of the voltage source, and further configured to provide current to the first current source responsive to detecting the change. The system also includes a second current source coupled in parallel to the first current source, where the second current source is configured to provide current to the first current source responsive to a control signal.
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公开(公告)号：US10700586B2
公开(公告)日：2020-06-30
申请号：US15142852
申请日：2016-04-29
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Shyamsunder Balasubramanian , Toshio Yamanaka , Toru Tanaka , Mayank Garg
IPC: H02P29/02 , H02P6/08 , H03K5/134 , H02P6/12 , H02M1/08 , H02M1/32 , H03K17/12 , H02P29/024 , H03K17/0812 , H03K17/687
Abstract: A gate driver circuit includes a comparator and a gate driver. The comparator is configured to detect a short circuit in a first power field effect transistor (FET). The gate driver is configured to drive a gate of the first power FET by generating a first signal at a first drive current. In response to the comparator detecting a short circuit in the first power FET, the gate driver is further configured to pulse the first signal at a first pulldown current. After the pulse has ended, the gate driver is further configured to drive the gate of the first power FET at a first hold current. The first hold current is less than the first pulldown current.
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公开(公告)号：US09985571B2
公开(公告)日：2018-05-29
申请号：US15143030
申请日：2016-04-29
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Toshio Yamanaka , Shyamsunder Balasubramanian , Toru Tanaka , Mayank Garg
CPC classification number: H02P31/00 , B60L3/00 , G06F1/28 , H02H7/0844 , H02H7/09
Abstract: An apparatus includes a control circuit that includes a configuration register and configured to receive a configuration setting across an external bus. The configuration setting encodes a first voltage state for the apparatus. The control circuit includes an input configured to be coupled to an external electrical device. The control circuit is configured to determine a value of the external device that maps to a second voltage state for the apparatus. The control logic is configured to transition the apparatus to a safe mode upon a determination that the first voltage state does not match the second voltage state.
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