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1.发明授权公开(公告)号：US11476761B2
公开(公告)日：2022-10-18
申请号：US17014863
申请日：2020-09-08
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Gary Franklin Chard , Ariel Dario Moctezuma , Hasibur Rahman , Alex Kwasi Nyavor Titriku , Srinath Hosur
Abstract: An inductor has first and second terminals. A first switch is coupled between the first terminal and a voltage supply terminal. A second switch is coupled between the first terminal and a negative output supply terminal. A third switch is coupled between the second terminal and a positive output supply terminal. A fourth switch is coupled between the second terminal and a ground terminal. A controller is coupled to the first, second, third and fourth switches. The controller is configured to provide: an inductor charge mode; a positive boost mode; a negative boost mode; a first rest state in which the controller closes the first switch and opens the second, third and fourth switches; and a second rest state in which the controller closes the fourth switch and opens the first, second and third switches.
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公开(公告)号：US20160190794A1
公开(公告)日：2016-06-30
申请号：US14969026
申请日：2015-12-15
Applicant: Texas Instruments Incorporated
Abstract: Protection circuits, USB interface integrated circuits, and methods for protecting host circuitry from USB port pin overvoltages, in which a switch is connected between a USB port pin and a middle node, and a detection circuit compares the middle node voltage with a reference voltage. A control circuit turns off the switch and turns on a clamp circuit to conduct pull down current from the middle node in response to the middle node voltage exceeding the reference voltage to mitigate overvoltage conditions on a host pin coupled to the middle node. When the middle node voltage falls below the reference voltage, the control circuit delays for a predetermined time and then turns off the clamp circuit and turns on the switch.
Abstract translation: 保护电路，USB接口集成电路和用于保护主机电路免受USB端口引脚过电压的影响，其中开关连接在USB端口引脚和中间节点之间，检测电路将中间节点电压与参考电压进行比较。 控制电路关闭开关并打开钳位电路，以响应于中间节点电压超过参考电压从中间节点传导下拉电流，以减轻耦合到中间节点的主机引脚上的过压状况。 当中间节点电压低于参考电压时，控制电路延迟预定时间，然后关断钳位电路并接通开关。
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公开(公告)号：US11971735B2
公开(公告)日：2024-04-30
申请号：US17083512
申请日：2020-10-29
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ariel Dario Moctezuma
CPC classification number: G05F1/575 , H03F1/086 , H03K5/00006
Abstract: A compensation circuit comprising: a first source having an output; a second source having an output; a first transistor having a first current terminal coupled to the output of the first source, a second current terminal coupled to ground and a first control terminal connected to the first current terminal; a second transistor having a second control terminal, a third current terminal coupled to the output of the second source and a fourth current terminal coupled to ground; a first resistor connected between the first control terminal and the second control terminal; and a capacitor having a first terminal and a second terminal, the first terminal of the capacitor connected to the second control terminal.
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公开(公告)号：US11616438B2
公开(公告)日：2023-03-28
申请号：US16724218
申请日：2019-12-21
Applicant: Texas Instruments Incorporated
Inventor： Ariel Dario Moctezuma , Gary Franklin Chard , Hasibur Rahman
Abstract: A power circuit includes a switch circuit, an auxiliary load circuit coupled to an output terminal, a switching control circuit to operate the switch circuit responsive to an error signal, a regulator circuit having a sense resistor, a comparator to provide the error signal, and a DAC to control a sense current of the sense resistor. A DAC control circuit provides a DAC input signal having a controlled ramp rate responsive to a decreasing setpoint signal, a load control circuit selectively enables the auxiliary load circuit responsive to the decreasing setpoint signal and responsive to the error signal to control the power circuit slew rate.
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公开(公告)号：US10312898B2
公开(公告)日：2019-06-04
申请号：US15206014
申请日：2016-07-08
Applicant: Texas Instruments Incorporated
Inventor： Ariel Dario Moctezuma , Srinath Hosur
IPC: H03K17/082 , H02H3/26 , H02H3/087 , H02H3/10
Abstract: In described examples, a switch has: a first current handling terminal coupled to a supply source terminal; and a second current handling terminal coupled to an output terminal. A comparator has: a first input coupled to the second current handling terminal; and a second input. A voltage reference source has: a first terminal coupled to the first current handling terminal; and a second terminal coupled to the second input of the comparator. A slew rate detector has an input coupled to the second current handling terminal. A switch controller has: a first input coupled to the comparator output; and a second input coupled to an output of the slew rate detector. The switch controller is coupled to output a signal to cause the switch to open when the comparator detects an over-current condition through the switch while the slew rate detector detects a negative slew rate.
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Patent Agency Ranking
公开(公告)号：US10819234B2
公开(公告)日：2020-10-27
申请号：US16428588
申请日：2019-05-31
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ariel Dario Moctezuma , Hasibur Rahman , William Krenik , Yanqing Li
Abstract: A system includes an inductor, and a first switch coupled between a first end of the inductor and a voltage supply node. The system also includes a second switch coupled between the first end of the inductor and a negative output supply node, wherein the second switch comprises a self-operated arrangement. The system also includes a third switch coupled between a second end of the inductor and a positive output supply node. The system also includes a fourth switch coupled between the second end of the inductor and a ground node. The system also includes a controller coupled to the first, second, third, and fourth switches.
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公开(公告)号：US10148084B2
公开(公告)日：2018-12-04
申请号：US14969026
申请日：2015-12-15
Applicant: Texas Instruments Incorporated
Abstract: Protection circuits, USB interface integrated circuits, and methods for protecting host circuitry from USB port pin overvoltages, in which a switch is connected between a USB port pin and a middle node, and a detection circuit compares the middle node voltage with a reference voltage. A control circuit turns off the switch and turns on a clamp circuit to conduct pull down current from the middle node in response to the middle node voltage exceeding the reference voltage to mitigate overvoltage conditions on a host pin coupled to the middle node. When the middle node voltage falls below the reference voltage, the control circuit delays for a predetermined time and then turns off the clamp circuit and turns on the switch.
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公开(公告)号：US20170317583A1
公开(公告)日：2017-11-02
申请号：US15234722
申请日：2016-08-11
Applicant: Texas Instruments Incorporated
Abstract: In described examples, in response to a voltage at an external power terminal falling below a safe limit: a charge pump is operated at a first frequency to produce a voltage at a charge pump node; and a first controlled current is coupled from the charge pump node to a control terminal of a power switch transistor. The power switch transistor has a conduction path coupled between the external power terminal and an internal power terminal at which an internal power source is connected. In response to the voltage at the external power terminal reaching a selected level: the charge pump is operated at a second frequency, lower than the first frequency; and a second controlled current, lower than the first controlled current, is coupled from the charge pump node to the control terminal of the power switch transistor.
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公开(公告)号：US20210194362A1
公开(公告)日：2021-06-24
申请号：US16724218
申请日：2019-12-21
Applicant: Texas Instruments Incorporated
Inventor： Ariel Dario Moctezuma , Gary Franklin Chard , Hasibur Rahman
Abstract: A power circuit includes a switch circuit, an auxiliary load circuit coupled to an output terminal, a switching control circuit to operate the switch circuit responsive to an error signal, a regulator circuit having a sense resistor, a comparator to provide the error signal, and a DAC to control a sense current of the sense resistor. A DAC control circuit provides a DAC input signal having a controlled ramp rate responsive to a decreasing setpoint signal, a load control circuit selectively enables the auxiliary load circuit responsive to the decreasing setpoint signal and responsive to the error signal to control the power circuit slew rate.
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公开(公告)号：US20210149427A1
公开(公告)日：2021-05-20
申请号：US17083512
申请日：2020-10-29
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ariel Dario Moctezuma
Abstract: A compensation circuit comprising: a first source having an output; a second source having an output; a first transistor having a first current terminal coupled to the output of the first source, a second current terminal coupled to ground and a first control terminal connected to the first current terminal; a second transistor having a second control terminal, a third current terminal coupled to the output of the second source and a fourth current terminal coupled to ground; a first resistor connected between the first control terminal and the second control terminal; and a capacitor having a first terminal and a second terminal, the first terminal of the capacitor connected to the second control terminal.
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