公开(公告)号：US10218374B2

公开(公告)日：2019-02-26

申请号：US15395212

申请日：2016-12-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Martijn Fridus Snoeij ,  Mikhail Valeryevich Ivanov ,  Roberto Giampiero Massolini ,  Brian David Johnson

IPC: H03L7/08 ,  H03M1/12 ,  H03M1/08

Abstract: In at least some embodiments, a system comprises a frequency generator configured to generate a second clock signal having a second frequency using a first clock signal having a first frequency. The second frequency is offset from the first frequency and each of a plurality of harmonic frequencies of the second frequency is offset from a harmonic frequency of the first frequency. The system also includes a power converter configured to produce a power signal that at least partially corresponds to the second frequency. The system further comprises an analog-to-digital converter (ADC) configured to sample and convert analog voltages at the first frequency. The ADC is powered by the power signal.

公开(公告)号：US10018687B2

公开(公告)日：2018-07-10

申请号：US14987549

申请日：2016-01-04

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Viola Schaffer ,  Martijn Fridus Snoeij ,  Mikhail Valeryevich Ivanov

IPC: G01N27/72 ,  G01R33/00 ,  G01R33/04 ,  G01R35/00 ,  G01R33/02 ,  G01R15/20 ,  G01K7/10 ,  G01J5/16 ,  G01L19/00

CPC classification number: G01R33/04 ,  G01J5/16 ,  G01K7/10 ,  G01L19/0092 ,  G01R15/20 ,  G01R33/0023 ,  G01R33/02 ,  G01R35/005

Abstract: Improved magnetic sensor excitation circuitry is presented for providing a periodic bidirectional excitation waveform to a fluxgate magnetic sensor excitation coil using a bridge circuit connected to the excitation coil and having lower transistors for switched selective connection to a current mirror input transistor to mirror a current provided by pulsed current source, and with integrated filtering to control pulse rise times and slew rate.

公开(公告)号：US20150338444A1

公开(公告)日：2015-11-26

申请号：US14814345

申请日：2015-07-30

Applicant: Texas Instruments Incorporated

Inventor： Mikhail Valeryevich Ivanov ,  Siva RaghuRam Prasad Chennupati ,  Viola Schaffer

IPC: G01R15/20

CPC classification number: G01R15/20 ,  G01R15/148 ,  G01R15/207 ,  G01R33/0005 ,  G01R33/02 ,  G01R33/09

Abstract: Improved current sensing methods and apparatus and conductor apparatus are presented for sensing current in a bus bar or other conductor using one or more circular magnetic sensors or multiple magnetic sensors disposed on a substrate in a pattern surrounding a longitudinal path within the outer periphery of the conductor to avoid or mitigate sensed magnetic field crosstalk and to facilitate use of high sensitivity magnetic sensors at locations inside the conductor periphery in which the magnetic field is relatively small.

Abstract translation: 提出了改进的电流感测方法和装置和导体装置，用于使用一个或多个圆形磁性传感器或多个磁性传感器来感测母线或其它导体中的电流，所述圆形磁性传感器或多个磁性传感器以围绕导体的外周边内的纵向路径的图案设置在基板上 以避免或减轻感测的磁场串扰并且便于在磁场相对较小的导体周边内的位置处使用高灵敏度的磁传感器。

公开(公告)号：US09176203B2

公开(公告)日：2015-11-03

申请号：US13838576

申请日：2013-03-15

Applicant: Texas Instruments Incorporated ,  TEXAS INSTRUMENTS DEUTSCHLAND GMBH

Inventor： Mikhail Valeryevich Ivanov ,  Siva RaghuRam Prasad Chennupati ,  Viola Schaffer

IPC: G01R33/02 ,  G01R33/09 ,  G01R15/14 ,  G01R15/20

CPC classification number: G01R15/20 ,  G01R15/148 ,  G01R15/207 ,  G01R33/0005 ,  G01R33/02 ,  G01R33/09

Abstract: Improved current sensing methods and apparatus and conductor apparatus are presented for sensing current in a bus bar or other conductor using one or more circular magnetic sensors or multiple magnetic sensors disposed on a substrate in a pattern surrounding a longitudinal path within the outer periphery of the conductor to avoid or mitigate sensed magnetic field crosstalk and to facilitate use of high sensitivity magnetic sensors at locations inside the conductor periphery in which the magnetic field is relatively small.

Abstract translation: 提出了改进的电流感测方法和装置和导体装置，用于使用一个或多个圆形磁性传感器或多个磁性传感器来感测母线或其它导体中的电流，所述圆形磁性传感器或多个磁性传感器以围绕导体的外周边内的纵向路径的图案设置在基板上 以避免或减轻感测的磁场串扰并且便于在磁场相对较小的导体周边内的位置处使用高灵敏度的磁传感器。