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531 条记录 (耗时 0.031 秒)

    Semiconductor device and method therefor
    11.
    发明授权
    Semiconductor device and method therefor 有权

    公开(公告)号：US10236779B2

    公开(公告)日：2019-03-19

    申请号：US15472802

    申请日：2017-03-29

    申请人： FAIRCHILD SEMICONDUCTOR CORPORATION

    发明人： Zhibo Tao ,  Chih-Hsien Hsieh ,  Yue-Hong Tang

    IPC分类号： H02M3/335 ,  H02M1/08 ,  H02M1/00

    摘要： In one embodiment, a power supply controller, or alternately a semiconductor device having a power supply controller, may have a first circuit configured to form a sense signal that is representative of a signal from an auxiliary winding of a transformer. A feedback circuit may be configured to allow the sense signal to increase in response to a turn-off of the power switch, to subsequently detect a second increase of the sense signal prior to subsequently turning on the power switch, and to form a feedback signal as a value of the sense signal responsively to the second increase of the sense signal.

    Electro-static discharge filtering circuit and method, reset circuit, and electronic device
    12.
    发明授权
    Electro-static discharge filtering circuit and method, reset circuit, and electronic device 有权

    公开(公告)号：US10056753B2

    公开(公告)日：2018-08-21

    申请号：US14622320

    申请日：2015-02-13

    申请人： Fairchild Semiconductor Corporation

    发明人： Peng Zhu ,  Lei Huang ,  Yongliang Li

    IPC分类号： H02H9/04

    CPC分类号： H02H9/046

    摘要： This document discusses, among other things, an electro-static discharge (EDS) filtering circuit and method, a reset circuit, and an electronic device. The ESD filtering circuit comprises a first current dividing circuit and a second current dividing circuit which respectively share a current of a first power source signal and aggregate the shared currents to form a second power source signal upon filtering, wherein a voltage drop of the first current dividing circuit is constant and the second current dividing circuit is a pure resistor element circuit.

    MULTIPLE PULSE IGNITION SYSTEM CONTROL
    17.
    发明申请
    MULTIPLE PULSE IGNITION SYSTEM CONTROL 审中-公开

    公开(公告)号：US20180058414A1

    公开(公告)日：2018-03-01

    申请号：US15674017

    申请日：2017-08-10

    申请人： FAIRCHILD SEMICONDUCTOR CORPORATION

    发明人： Qingquan TANG

    IPC分类号： F02P3/055 ,  F02P3/045 ,  F02P3/04 ,  H01F38/12

    CPC分类号： F02P3/055 ,  F02P3/0407 ,  F02P3/045 ,  F02P3/053 ,  F02P5/1502 ,  H01F38/12

    摘要： In a general aspect, an ignition circuit can include a control circuit that is coupled with an engine control unit (ECU) to receive a command signal from the ECU. The control circuit can include a multi-pulse generator configured to, in response to the command signal, generate a multi-pulse drive signal. The multi-pulse drive signal can include a first pulse cycle having a first duty cycle, a second pulse cycle having a second duty cycle, and a dwell period during which the multi-pulse drive signal continuously remains at a logic high value. The control circuit can be configured to provide the multi-pulse drive signal to an ignition switch coupled with the control circuit to receive the multi-pulse drive signal.

    POWER FACTOR CORRECTION CIRCUIT AND METHOD
    18.
    发明申请
    POWER FACTOR CORRECTION CIRCUIT AND METHOD 审中-公开

    公开(公告)号：US20180054113A1

    公开(公告)日：2018-02-22

    申请号：US15673011

    申请日：2017-08-09

    申请人： FAIRCHILD SEMICONDUCTOR CORPORATION

    发明人： Jintae KIM ,  Sangcheol MOON ,  Hangseok CHOI

    IPC分类号： H02M1/42 ,  H02M1/08 ,  H02M7/06

    CPC分类号： H02M1/4241 ,  H02M1/083 ,  H02M1/12 ,  H02M1/15 ,  H02M1/4225 ,  H02M7/06 ,  H02M2001/0009 ,  H02M2001/0048

    摘要： A Power Factor Correction (PFC) circuit comprises an oscillator circuit. The oscillator circuit receives a valley detect signal indicating a zero current condition, determines a blanking time according to an operational cycle of the PFC circuit, and determines to initiate the operational cycle according to the valley detect signal and the blanking time. Determining the blanking time comprises selecting one of a plurality of predetermined blanking times according to a count of operational cycles of the PFC circuit. The PFC circuit may operate in a Boundary Conduction Mode or a Discontinuous Conduction Mode depending on whether a charge-discharge period is greater than the blanking time. The PFC circuit may determine, according to its output voltage, a first duration of a charging period, determine a delay time according to zero current times of previous operational cycles, and extend the first duration of the charging period by the delay time.

    Auxiliary self-protecting transistor structure
    19.
    发明授权
    Auxiliary self-protecting transistor structure 有权

    公开(公告)号：US09899370B2

    公开(公告)日：2018-02-20

    申请号：US14834772

    申请日：2015-08-25

    申请人： Fairchild Semiconductor Corporation

    发明人： Kenneth P. Snowdon ,  Taeghyun Kang ,  Alister Young

    IPC分类号： H01L27/02

    CPC分类号： H01L27/027

    摘要： This document discusses, among other things, an auxiliary self-protecting transistor circuit, system, and method configured to protect a complementary metal-oxide semiconductor (CMOS) transistor. The auxiliary self-protecting transistor circuit can include an ESD device including a gate terminal, a drain terminal, and a source terminal. The ESD device is configured to be coupled to an isolation region of a complementary metal-oxide semiconductor (CMOS) transistor, and can provide a discharge path between the isolation region of the CMOS transistor and the source terminal of the ESD device. The isolation region of the CMOS transistor can include a blocking junction, such as an n-doped isolation well (niso), a p-type well (pwell), or one or more other blocking junctions.

    MAGNETIC SENSOR UTILIZING MAGNETIZATION RESET FOR SENSE AXIS SELECTION
    20.
    发明申请
    MAGNETIC SENSOR UTILIZING MAGNETIZATION RESET FOR SENSE AXIS SELECTION 审中-公开

    公开(公告)号：US20180031647A1

    公开(公告)日：2018-02-01

    申请号：US15727711

    申请日：2017-10-09

    申请人： FAIRCHILD SEMICONDUCTOR CORPORATION

    发明人： Phil MATHER

    IPC分类号： G01R33/09

    摘要： In one general aspect, a system includes a material including a surface, and a magnetic sensor configured to sense a first component and a second component of a magnetic field. The first component of the magnetic field may be orthogonal to the second component of the magnetic field. The magnetic sensor may include a first sense element included on a first angled surface sloping in a first direction relative to the surface of the material, a second sense element included on a second angled surface sloping in the first direction, and a third angled surface sloping in a second direction different from the first direction where the third angled surface can be disposed between the first angled surface and the second angled surface and can exclude a sense element.