公开(公告)号：US20170363445A1

公开(公告)日：2017-12-21

申请号：US15186394

申请日：2016-06-17

Applicant: Texas Instruments Incorporated

Inventor： Arup Polley ,  Srinath Ramaswamy ,  Baher S. Haroun ,  Rajarshi Mukhopadhyay

IPC: G01D5/14

CPC classification number: G01D5/142 ,  G01D3/0365 ,  G01D5/145

Abstract: A high bandwidth Hall sensor includes, for example, a Hall element for generating a first polarity Hall-signal output current. An amplifier receives, at a first input, the first polarity Hall-signal output current and outputs a feedback current of a second polarity opposite the first polarity in response. The feedback current is coupled to the first input, and the feedback current suppresses an instantaneous voltage generated by the first polarity first Hall element output current at the first input. In an embodiment, the feedback current suppresses the instantaneous voltage generated by first polarity Hall element output current such that the effects of the Hall element source impedance are reduced.

公开(公告)号：US09716430B1

公开(公告)日：2017-07-25

申请号：US15245902

申请日：2016-08-24

Applicant: Texas Instruments Incorporated

Inventor： Olivier Trescases ,  Johan Tjeerd Strydom ,  Rajarshi Mukhopadhyay

IPC: H03K17/00 ,  H02M3/156 ,  H03K17/687 ,  H03K17/284

CPC classification number: H02M3/156 ,  G01R19/2509 ,  H03K17/284 ,  H03K17/687

Abstract: Circuitry and methods for sampling a signal are disclosed. An example of the circuitry includes a node for coupling the circuitry to the signal being sampled and a plurality of capacitors, wherein each capacitor is selectively coupled to the node by a switch. An analog-to-digital converter is coupled to the node and is for measuring the voltages of individual ones of the plurality of capacitors and converting the voltages to digital signals. Delay circuitry is coupled to each of the switches, the delay circuitry is for closing one switch at a time for a predetermined period.

公开(公告)号：US20170117819A1

公开(公告)日：2017-04-27

申请号：US14961440

申请日：2015-12-07

Applicant: Texas Instruments Incorporated

Inventor： Lei Chen ,  Rajarshi Mukhopadhyay ,  Mark W. Morgan ,  Joseph A. Sankman

IPC: H02M7/217

CPC classification number: H02M7/217 ,  H02M3/158 ,  H02M3/28 ,  H02M2001/123 ,  Y02B70/1425 ,  Y02B70/1441

Abstract: A method and device for providing isolated power transfer to a low-power load across a capacitor of a series resonance circuit are shown. The method includes comparing an output voltage received via a feedback loop with a desired output voltage. Responsive to determining that the output voltage is not equal to the desired output voltage, the method determines a sub-harmonic order of the resonant frequency of the series resonance circuit to use as a switching frequency and switches the series resonance circuit at substantially the determined subharmonic order of the resonant frequency.

公开(公告)号：US20160359483A1

公开(公告)日：2016-12-08

申请号：US14733655

申请日：2015-06-08

Applicant: Texas Instruments Incorporated

Inventor： Rajarshi Mukhopadhyay ,  Nathan Schemm ,  Xiaonan Wang

IPC: H03K17/74 ,  H03K5/24 ,  G05F1/46

CPC classification number: H03K17/74 ,  G05F1/46 ,  H03K5/2472 ,  H03K2217/0081

Abstract: Bootstrap diode circuits are disclosed. Example bootstrap diode circuits disclosed herein include a first diode having a first diode input coupled to a voltage supply and a first diode output. Disclosed bootstrap diode circuits additionally include a second diode having a second diode input coupled to the first diode output and a second diode output and a plurality of zener diodes coupled in series. The plurality of series-coupled zener diodes are further coupled in parallel with the second diode.

Abstract translation: 自举二极管电路被公开。 本文公开的示例性自举二极管电路包括具有耦合到电压源的第一二极管输入和第一二极管输出的第一二极管。 公开的自举二极管电路还包括具有耦合到第一二极管输出的第二二极管输入和第二二极管输出以及串联耦合的多个齐纳二极管的第二二极管。 多个串联耦合齐纳二极管进一步与第二二极管并联耦合。

公开(公告)号：US09456257B2

公开(公告)日：2016-09-27

申请号：US14480013

申请日：2014-09-08

Applicant: Texas Instruments Incorporated

Inventor： Rajarshi Mukhopadhyay ,  Mark W. Morgan

IPC: H02J3/12 ,  G05F1/00 ,  G05F3/16 ,  G05F3/20 ,  H02H7/125 ,  H02M7/08 ,  H04Q9/00 ,  H02M7/219

CPC classification number: H04Q9/00 ,  H02J50/05 ,  H02M7/219

Abstract: A power transfer system for transferring power from a first circuit to a second circuit by a differential signal generated in the first circuit includes a first isolation element for transmitting a first component of the differential signal between the first and second circuits. The system also includes a second isolation element for transmitting a second component of the differential signal between the first and second circuits. A digital rectifier is coupled to the first and second isolation elements for generating a rectified voltage in response to the first and second components of the differential signal. The system includes circuitry for monitoring the rectified voltage and generating a signal representative of the rectified voltage. The system also includes a controller for changing the rectified voltage in response to the signal representative of the rectified voltage.

Abstract translation: 用于通过在第一电路中产生的差分信号将功率从第一电路传输到第二电路的电力传送系统包括用于在第一和第二电路之间传输差分信号的第一分量的第一隔离元件。 该系统还包括用于在第一和第二电路之间传输差分信号的第二分量的第二隔离元件。 数字整流器耦合到第一和第二隔离元件，用于响应于差分信号的第一和第二分量产生整流电压。 该系统包括用于监视整流电压并产生代表整流电压的信号的电路。 该系统还包括用于响应于表示整流电压的信号改变整流电压的控制器。

公开(公告)号：US20150070949A1

公开(公告)日：2015-03-12

申请号：US14480013

申请日：2014-09-08

Applicant: Texas Instruments Incorporated

Inventor： Rajarshi Mukhopadhyay ,  Mark W. Morgan

IPC: H02M7/12 ,  H02M7/217

CPC classification number: H04Q9/00 ,  H02J50/05 ,  H02M7/219

Abstract: A power transfer system for transferring power from a first circuit to a second circuit by a differential signal generated in the first circuit includes a first isolation element for transmitting a first component of the differential signal between the first and second circuits. The system also includes a second isolation element for transmitting a second component of the differential signal between the first and second circuits. A digital rectifier is coupled to the first and second isolation elements for generating a rectified voltage in response to the first and second components of the differential signal. The system includes circuitry for monitoring the rectified voltage and generating a signal representative of the rectified voltage. The system also includes a controller for changing the rectified voltage in response to the signal representative of the rectified voltage.

Abstract translation: 用于通过在第一电路中产生的差分信号将功率从第一电路传输到第二电路的电力传送系统包括用于在第一和第二电路之间传输差分信号的第一分量的第一隔离元件。 该系统还包括用于在第一和第二电路之间传输差分信号的第二分量的第二隔离元件。 数字整流器耦合到第一和第二隔离元件，用于响应于差分信号的第一和第二分量产生整流电压。 该系统包括用于监视整流电压并产生代表整流电压的信号的电路。 该系统还包括用于响应于表示整流电压的信号改变整流电压的控制器。

公开(公告)号：US20150070111A1

公开(公告)日：2015-03-12

申请号：US14479966

申请日：2014-09-08

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Mark W. Morgan ,  Rajarshi Mukhopadhyay

IPC: H03H7/00 ,  H04B3/54 ,  H03H7/01

CPC classification number: H04L25/0272 ,  H04B3/54 ,  H04B3/56 ,  H04B2203/5425 ,  H04B2203/5491

Abstract: A system for transferring information from a first circuit to a second circuit includes first and second isolation elements coupled between the first circuit and the second circuit. A first transient filter is located on the second circuit and coupled to the first isolation element. A second transient filter is located on the second circuit and coupled to the second isolation element. A first ground is located on the first circuit, and a second ground is located on the second circuit. The first ground electrically floats relative to the second ground.

Abstract translation: 用于将信息从第一电路传送到第二电路的系统包括耦合在第一电路和第二电路之间的第一和第二隔离元件。 第一瞬态滤波器位于第二电路上并耦合到第一隔离元件。 第二瞬态滤波器位于第二电路上并耦合到第二隔离元件。 第一接地位于第一电路上，第二接地位于第二电路上。 第一个地面相对于第二个地面电浮动。

公开(公告)号：US20140300984A1

公开(公告)日：2014-10-09

申请号：US13859617

申请日：2013-04-09

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Rajarshi Mukhopadhyay ,  Matthew D. Rowley

IPC: G11B5/09

CPC classification number: G11B5/09 ,  G11B5/022

Abstract: Method and circuits for cancelling reflected waves from a load are disclosed. An embodiment of the method includes transmitting a signal to the bad from a current source, wherein a transistor is connected in parallel with the current source at a node. The transistor is biased so that a reflected wave at the node will cause the drain to source voltage of the transistor to increase. The drain current of the first transistor increases by way of channel length modulation when the drain to source voltage increases, the increased drain current cancels the reflected wave.

Abstract translation: 公开了用于抵消来自负载的反射波的方法和电路。 该方法的一个实施例包括从电流源向坏的发送信号，其中晶体管与节点处的电流源并联连接。 晶体管被偏置，使得节点处的反射波将导致晶体管的漏极源电压增加。 当漏极到源极电压增加时，第一晶体管的漏极电流增加通过沟道长度调制，增加的漏极电流消除反射波。

公开(公告)号：US20140292354A1

公开(公告)日：2014-10-02

申请号：US13851484

申请日：2013-03-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Baher S. Haroun ,  Rajarshi Mukhopadhyay ,  Paul Merle Emerson

IPC: G01B7/14 ,  G11B20/18

CPC classification number: G01B7/14 ,  G01B7/023

Abstract: A capacitive sensor has at least first and second conductive areas so that a first capacitance is formed between the first conductive area and a surface, and a second capacitance is formed between the second conductive area and the surface, and the ratio of the first capacitance to the second capacitance has a predetermined value only when the sensor is at a predetermined distance from the surface.

Abstract translation: 电容传感器具有至少第一和第二导电区域，使得在第一导电区域和表面之间形成第一电容，并且在第二导电区域和表面之间形成第二电容，并且将第一电容与第 只有当传感器距离表面处于预定距离时，第二电容具有预定值。