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公开(公告)号：US11595011B2
公开(公告)日：2023-02-28
申请号：US17146523
申请日：2021-01-12
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Suresh Mallala , Nitin Agarwal
Abstract: A differential input stage of a circuit includes a first transistor, a second transistor, a third transistor, and a fourth transistor. Drains of the first and third transistors couple together at a first node, and drains of the second and fourth transistors couple together at a second node. A first slew boost circuit includes a fifth transistor and a first current mirror. A gate of the fifth transistor couples to the second node. A source of the fifth transistor couples to the first node. The first current mirror couples to the fifth transistor and to the second node. A second slew boost circuit includes a sixth transistor and a second current mirror. A gate of the sixth transistor couples to the first node. A source of the sixth transistor couples to the second node. The second current mirror couples to the sixth transistor and to the first node.
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公开(公告)号：US11444612B2
公开(公告)日：2022-09-13
申请号：US17223097
申请日：2021-04-06
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Nitin Agarwal , Venkat Ramakrishna Saripalli , Venkata Ramanan R
Abstract: In described examples, an amplifier can be arranged to generate a first stage output signal in response to an input signal. The input signal can be coupled to control a first current coupled from a first current source through a common node to generate the first stage output signal. A replica circuit can be arranged to generate a replica load signal in response to the input signal and in response to current received from the common node. A current switch can be arranged to selectively couple a second current from a second current source to the common node in response to the replica load signal.
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公开(公告)号：US20220014151A1
公开(公告)日：2022-01-13
申请号：US17136427
申请日：2020-12-29
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Nitin Agarwal , Aniruddha Roy
Abstract: A circuit is provided. In some examples, the circuit includes a first transistor having a gate and a drain coupled together and a current source coupled to the drain of the first transistor. A second transistor has a drain coupled to a source of the first transistor. A third transistor has a gate coupled to the gate of the first transistor. A fourth transistor has a drain coupled to a source of the third transistor and a gate of the fourth transistor is coupled to a gate of the second transistor. In some examples, the third transistor is configured to limit a first current between the third transistor and the fourth transistor based on an output voltage.
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公开(公告)号：US10924074B2
公开(公告)日：2021-02-16
申请号：US16377462
申请日：2019-04-08
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Suresh Mallala , Nitin Agarwal
Abstract: A differential input stage of a circuit includes a first transistor, a second transistor, a third transistor, and a fourth transistor. Drains of the first and third transistors couple together at a first node, and drains of the second and fourth transistors couple together at a second node. A first slew boost circuit includes a fifth transistor and a first current mirror. A gate of the fifth transistor couples to the second node. A source of the fifth transistor couples to the first node. The first current mirror couples to the fifth transistor and to the second node. A second slew boost circuit includes a sixth transistor and a second current mirror. A gate of the sixth transistor couples to the first node. A source of the sixth transistor couples to the second node. The second current mirror couples to the sixth transistor and to the first node.
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公开(公告)号：US20200089263A1
公开(公告)日：2020-03-19
申请号：US16689545
申请日：2019-11-20
Applicant: Texas Instruments Incorporated
Inventor： Sachin Sudhir Turkewadikar , Nitin Agarwal , Madhan Radhakrishnan
Abstract: A power control integrated circuit (IC) chip can include a direct current (DC)-DC converter that outputs a switching voltage in response to a switching output enable signal. The power control IC chip can also include an inductor detect circuit that detects whether an inductor is conductively coupled to the DC-DC converter and a powered circuit component in response to an inductor detect signal. The power control IC chip can further include control logic that (i) controls the inductor detect signal based on an enable DC-DC signal and (ii) controls the switching output enable signal provided to the DC-DC converter and a linear output disable signal provided to a linear regulator based on a signal from the inductor detect circuit indicating whether the inductor is conductively coupled to the DC-DC converter and the powered circuit component.
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Patent Agency Ranking
公开(公告)号：US20170149398A1
公开(公告)日：2017-05-25
申请号：US15144531
申请日：2016-05-02
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Nitin Agarwal , Aniruddha Roy
CPC classification number: H03G1/0094 , H02M3/07 , H03G1/0029 , H03G3/001 , H03G5/28 , H03K5/08
Abstract: A compensation circuit includes an amplifier coupled between a first voltage terminal and a common terminal. The amplifier has a first output terminal. A current source transistor has a current path coupled between a second voltage terminal and a second output terminal. A threshold voltage sense transistor has a current path coupled between the first and second output terminals. A gate and drain of the threshold voltage sense transistor are connected. An output transistor having a current path coupled between the first output terminal and a third output terminal has a gate coupled to the second output terminal.
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7.发明授权Control circuit to detect a noise signal during a state change of a switch 有权用于在开关状态变化期间检测噪声信号的控制电路公开(公告)号：US09343949B2
公开(公告)日：2016-05-17
申请号：US14492569
申请日：2014-09-22
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Nitin Agarwal , Sachin Sudhir Turkewadikar
CPC classification number: H02M1/00 , H02M3/158 , H02M3/1588 , H02M2001/0003 , H02M2001/0029 , H03K17/04206 , H03K17/165 , Y02B70/1466
Abstract: Several circuits and methods for driver control of a switching circuit are disclosed. In an embodiment, a circuit for driver control of a switching circuit includes a driver circuit and a control circuit. The driver circuit is capable of being coupled to the switching circuit. The switching circuit includes a first switch and a second switch. The driver circuit is configured to control a conductive state of the switching circuit by facilitating an alternate state change of the first switch and the second switch. The control circuit is coupled to the driver circuit and is configured to detect a noise signal during a state change of the first switch. The control circuit is further configured to control the driver circuit to thereby slow down the state change of the first switch.
Abstract translation: 公开了用于开关电路的驱动器控制的几种电路和方法。 在一个实施例中，用于开关电路的驱动器控制的电路包括驱动器电路和控制电路。 驱动电路能够耦合到开关电路。 开关电路包括第一开关和第二开关。 驱动电路被配置为通过促进第一开关和第二开关的替代状态改变来控制开关电路的导通状态。 控制电路耦合到驱动电路，并被配置为在第一开关的状态改变期间检测噪声信号。 控制电路还被配置为控制驱动器电路，从而减慢第一开关的状态变化。
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公开(公告)号：US20150326102A1
公开(公告)日：2015-11-12
申请号：US14272063
申请日：2014-05-07
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Madhan Radhakrishnan , Nitin Agarwal
CPC classification number: H02M3/1588 , H02M1/00 , H02M1/143 , H02M1/15 , H02M3/158 , H02M2001/0003 , H02M2001/0009 , H02M2001/0012 , Y02B70/1466
Abstract: Aspects of the present invention provide a DC/DC converter for use with a supply voltage and operable to drive a load, wherein the DC/DC converter includes a VIN node, a VOUT node, a switching component, a filter, a comparator, a current detecting component and a control component. The VIN node can receive the supply voltage and the VOUT node can provide an output voltage to drive the load. The filter electrically connects the switching component with the VOUT node. The comparator can generate a comparison signal based on the output voltage. The current detecting component can detect when a current in a direction from the filter toward the VOUT node decreases to zero. The control component can control the switching component so as to provide the output voltage at the VOUT node in a discontinuous conduction mode to drive the load.
Abstract translation: 本发明的方面提供了一种用于电源电压并用于驱动负载的DC / DC转换器，其中DC / DC转换器包括VIN节点，VOUT节点，开关组件，滤波器，比较器， 电流检测部件和控制部件。 VIN节点可以接收电源电压，VOUT节点可以提供输出电压来驱动负载。 滤波器将开关组件与VOUT节点电连接。 比较器可以基于输出电压产生比较信号。 电流检测部件可以检测从滤波器朝向VOUT节点的方向上的电流何时降低到零。 控制部件可以控制开关部件，以便以不连续导通模式在VOUT节点处提供输出电压来驱动负载。
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9.发明申请公开(公告)号：US20230043133A1
公开(公告)日：2023-02-09
申请号：US17903128
申请日：2022-09-06
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Nitin Agarwal , Aniruddha Roy , Preetham Narayana Reddy
Abstract: In an example, a system includes an oscillator circuit on a chip. The oscillator circuit includes a charging current generator including a current mirror and an amplifier, where the amplifier is coupled to a pin of the chip. The oscillator circuit also includes a first switch coupled to the pin, a second switch coupled to the pin and to a charging resistor, and a third switch coupled to the amplifier and an internal resistor, where the internal resistor is internal to the chip. The oscillator circuit includes a bias current source coupled to the current mirror. The system includes an external resistor coupled to the pin, where the external resistor is external to the chip. The system also includes an external capacitor coupled to the pin and coupled in parallel to the external resistor, where the external capacitor is external to the chip.
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公开(公告)号：US11558013B2
公开(公告)日：2023-01-17
申请号：US16701629
申请日：2019-12-03
Applicant: Texas Instruments Incorporated
Inventor： Nitin Agarwal , Kunal Karanjkar , Venkata Ramanan
Abstract: Enhanced operational amplifier trim circuitry and techniques are presented herein. In one implementation, a circuit includes a reference circuit configured to produce a set of reference voltages, and a digital-to-analog conversion (DAC) circuit. The DAC circuit comprises a plurality of transistor pairs, where each pair among the plurality of transistor pairs is configured to provide portions of adjustment currents for an operational amplifier based at least on the set of reference voltages and sizing among transistors of each pair. The circuit also includes drain switching elements coupled to drain terminals of the transistors of each pair and configured to selectively couple one or more of the portions of the adjustment currents to the operational amplifier in accordance with digital trim codes.
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