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    LOAD DEPENDENT IN-RUSH CURRENT CONTROL WITH FAULT DETECTION ACROSS ISO-BARRIER
    1.
    发明申请
    LOAD DEPENDENT IN-RUSH CURRENT CONTROL WITH FAULT DETECTION ACROSS ISO-BARRIER 审中-公开

    公开(公告)号：US20180041130A1

    公开(公告)日：2018-02-08

    申请号：US15669345

    申请日：2017-08-04

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Keith Edmund Kunz ,  Anant Kamath ,  Maurizio Granato ,  Prajkta Vyavahare

    IPC: H02M3/335 ,  H02M1/32

    CPC classification number: H02M3/33507 ,  H02M1/32 ,  H02M3/33523

    Abstract: Methods and systems for providing electrical power using an isolated DC-DC converter, including the actions of: a) providing current to a primary side of a transformer at multiple predetermined open loop current levels using a power supply, said power supply providing said open loop current levels in increasing amplitude order and at predetermined times, said open loop current levels and times being selected to ramp a voltage across output terminals connected to a secondary side of said transformer so that after said power supply provides a maximum one of said open loop current levels, said voltage reaches a threshold sufficient to enable a closed loop controller connected to said output terminals to send a feedback signal to said primary side, said threshold being insufficient to fully power said output terminals; and b) sending said feedback signal to said primary side using said closed loop controller when said voltage reaches said threshold, said power supply controlled in response to said feedback signal to continue providing current to said primary side at closed loop current levels, said feedback signal selected to control said power supply to increase said closed loop current levels until said output terminals are fully powered.

    System and method for control of automated test equipment contactor
    4.
    发明授权
    System and method for control of automated test equipment contactor 有权

    公开(公告)号：US10761111B2

    公开(公告)日：2020-09-01

    申请号：US15989126

    申请日：2018-05-24

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Arun Adoni ,  Suvadip Banerjee ,  Sreeram Subramanyam Nasum ,  Prajkta Vyavahare

    IPC: G01R1/067 ,  G01R31/28 ,  G01R35/00

    Abstract: A system includes a controller for automated test equipment (ATE) contactor to interface with a device under test (DUT) including a power converter having a primary and secondary side, each side has an input/output (I/O) pin. The controller causes the ATE contactor to apply a load current on the secondary side of the power converter at a first value and vary the load current to a second value. The contactor receives first and second indications, at the first and second load currents, of a voltage on the primary side I/O pin, a voltage on the primary side of the power converter, an input current on the primary side of the power converter, a voltage on the secondary side I/O pin, and a voltage on the secondary side of the power converter. The controller determines a primary and secondary side ATE contactor resistances based on the first and second indications.

    Fail-Safe I/O to Achieve Ultra Low System Power
    5.
    发明申请
    Fail-Safe I/O to Achieve Ultra Low System Power 审中-公开
    故障安全I / O实现超低系统功耗

    公开(公告)号：US20160351247A1

    公开(公告)日：2016-12-01

    申请号：US15236797

    申请日：2016-08-15

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Prajkta Vyavahare ,  Rajat Chauhan ,  Siva Srinivas Kothamasu

    IPC: G11C11/4093 ,  G11C11/4074 ,  G06F13/10 ,  G11C11/4094

    CPC classification number: G11C11/4093 ,  G06F1/3296 ,  G06F13/102 ,  G11C7/1057 ,  G11C11/4074 ,  G11C11/4094 ,  H03K17/687 ,  Y02D10/14

    Abstract: The disclosure provides an input/output (IO) circuit powered by an input/output (IO) supply voltage. The IO circuit includes a cutoff circuit that receives a first invert signal, the IO supply voltage, a bias voltage and a pad voltage. An output stage is coupled to the cutoff circuit. The output stage receives a first signal, a second signal and the bias voltage. A pad is coupled to the output stage, and a voltage generated at the pad is the pad voltage. The cutoff circuit and the output stage maintain the pad voltage at logic high when the IO supply voltage transition below a defined threshold.

    Abstract translation: 本公开提供了由输入/输出（IO）电源电压供电的输入/输出（IO）电路。 IO电路包括接收第一反相信号，IO电源电压，偏置电压和焊盘电压的截止电路。 输出级与断路电路相连。 输出级接收第一信号，第二信号和偏置电压。 焊盘耦合到输出级，并且在焊盘处产生的电压是焊盘电压。 当IO电源电压转换低于定义的阈值时，截止电路和输出级将焊盘电压保持在逻辑高电平。

    Load dependent in-rush current control with fault detection across Iso-barrier
    6.
    发明授权
    Load dependent in-rush current control with fault detection across Iso-barrier 有权

    公开(公告)号：US10903746B2

    公开(公告)日：2021-01-26

    申请号：US15669345

    申请日：2017-08-04

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Keith Edmund Kunz ,  Anant Kamath ,  Maurizio Granato ,  Prajkta Vyavahare

    IPC: H02M3/335 ,  H02M1/32

    Abstract: Methods and systems for providing electrical power using an isolated DC-DC converter include: using a power supply to provide multiple amplitudes of open loop current to a primary side of a transformer. The amplitudes are selected to increase stepwise, at predetermined times, to ramp a voltage across output terminals connected to a secondary side of said transformer so that after said power supply provides a maximum open loop current amplitude, said voltage reaches a threshold sufficient to enable a closed loop controller connected to said output terminals to send a feedback signal to said primary side. The threshold voltage is insufficient to fully power said output terminals. The feedback signal is selected to control said power supply to increase current to said primary side at closed loop current levels until said output terminals are fully powered.

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