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    Signal gating circuit for use in digital circuits and method therefor
    1.
    发明授权
    Signal gating circuit for use in digital circuits and method therefor 有权

    公开(公告)号：US10056899B1

    公开(公告)日：2018-08-21

    申请号：US15629318

    申请日：2017-06-21

    Applicant: Silicon Laboratories Inc.

    Inventor： Kenneth W. Fernald ,  Chester Yu ,  Hegong Wei

    IPC: H03K3/017 ,  H03K17/687 ,  H03K5/159 ,  H03K19/20 ,  H03K5/05

    CPC classification number: H03K5/05 ,  H03K5/12 ,  H03K5/159 ,  H03K19/0016 ,  H03K19/20

    Abstract: A signal gating circuit includes a logic circuit that receives a stop signal and an input signal and provides an intermediate signal in response, and a pulse stretcher. The pulse stretcher provides an output signal with no pulse when a width of a pulse of the intermediate signal is less than a first amount, with a pulse having a first pulse width that begins after a start of the pulse of the intermediate signal and ends at a predetermined delay thereafter when a pulse width of the intermediate signal is greater than the first amount but less than a second amount, and with a pulse having a second pulse width that begins after the start of the pulse of the intermediate signal and ends after an end of the pulse of the intermediate signal when a pulse width of the intermediate signal is greater than the second amount.

    Low-Power Communication Apparatus and Associated Methods
    3.
    发明申请
    Low-Power Communication Apparatus and Associated Methods 有权
    低功率通信设备及相关方法

    公开(公告)号：US20150271756A1

    公开(公告)日：2015-09-24

    申请号：US14224048

    申请日：2014-03-24

    Applicant: Silicon Laboratories Inc.

    Inventor： Kenneth W. Fernald ,  Phillip Matthews ,  Thomas Saroshan David

    IPC: H04W52/02

    CPC classification number: H04W52/0241 ,  H04W52/0222 ,  H04W52/0251 ,  Y02D70/00

    Abstract: An apparatus includes a detector to detect an idle state of a communication link that communicates bursts or packets of information. The apparatus also includes an oscillator having low-power and normal modes of operation. The oscillator makes a transition to the low-power mode during the idle state of the communication link. The oscillator leaves the low-power mode of operation and enters the normal mode of operation when the communication link is in a non-idle state.

    Abstract translation: 一种装置包括检测器，用于检测通信链路的空闲状态，所述通信链路传送脉冲串或信息包。 该装置还包括具有低功率和正常工作模式的振荡器。 在通信链路的空闲状态期间，振荡器转换到低功率模式。 当通信链路处于非空闲状态时，振荡器离开低功耗操作模式并进入正常工作模式。

    Controller and Display Apparatus with Improved Performance and Associated Methods
    4.
    发明申请
    Controller and Display Apparatus with Improved Performance and Associated Methods 审中-公开
    控制器和显示设备具有改进的性能和相关方法

    公开(公告)号：US20150154897A1

    公开(公告)日：2015-06-04

    申请号：US14555510

    申请日：2014-11-26

    Applicant: Silicon Laboratories Inc.

    Inventor： Mohamed M. E. Elsayed ,  Kenneth W. Fernald

    IPC: G09G3/18

    CPC classification number: G09G3/18 ,  G09G3/3655 ,  G09G3/3681 ,  G09G3/3696 ,  G09G2310/0297 ,  G09G2330/021

    Abstract: An apparatus includes a multiplexed liquid crystal display (LCD) controller. The LCD controller operates in at least first and second phases of operation. The LCD controller drives a first plurality of signal lines to a first set of voltages during the first phase of operation and to a second set of voltages during the second phase of operation. The LCD controller selectively couples to a node at least some of the plurality of signal lines between the first and second phases of operation depending on data provided to the LCD controller.

    Abstract translation: 一种装置包括多路复用液晶显示（LCD）控制器。 LCD控制器至少操作第一和第二阶段。 在第一操作阶段期间，LCD控制器将第一组多个信号线驱动到第一组电压，并在第二操作阶段将第一组电压驱动到第二组电压。 LCD控制器根据提供给LCD控制器的数据，在第一和第二操作阶段之间选择性地耦合到节点至少一些信号线。

    APPARATUS FOR MOTOR CONTROL SYSTEM AND ASSOCIATED METHODS
    5.
    发明申请
    APPARATUS FOR MOTOR CONTROL SYSTEM AND ASSOCIATED METHODS 有权
    电机控制系统及相关方法的设备

    公开(公告)号：US20140184116A1

    公开(公告)日：2014-07-03

    申请号：US13731081

    申请日：2012-12-30

    Applicant: SILICON LABORATORIES INC.

    Inventor： Kenneth A. Berringer ,  Axel Thomsen ,  Pedro Pachuca ,  Brent Wilson ,  Jinwen Xiao ,  Scott Willingham ,  Kenneth W. Fernald ,  Paul Zavalney

    IPC: H02P6/18 ,  H02P25/02

    CPC classification number: H02P21/06 ,  H02P31/00

    Abstract: A motor control apparatus to control a motor external to the motor control apparatus includes a microcontroller unit (MCU). The MCU includes mixed signal motor control circuitry adapted to perform back electromotive force (EMF) motor control in a first mode of operation. The mixed signal motor control circuitry is further adapted to perform field oriented control (FOC) in a second mode of operation.

    Abstract translation: 用于控制电动机控制装置外部的电动机的电动机控制装置包括微控制器单元（MCU）。 MCU包括混合信号电动机控制电路，其适于在第一操作模式下执行反电动势（EMF）电动机控制。 混合信号电动机控制电路还适于在第二操作模式中执行场定向控制（FOC）。

    Apparatus for sensing temperature in electronic circuitry and associated methods
    6.
    发明授权
    Apparatus for sensing temperature in electronic circuitry and associated methods 有权

    公开(公告)号：US10788376B2

    公开(公告)日：2020-09-29

    申请号：US15717924

    申请日：2017-09-27

    Applicant: Silicon Laboratories Inc.

    Inventor： Mohamed M. Elsayed ,  Kenneth W. Fernald

    IPC: G01K7/02 ,  G05F1/56 ,  H03K5/24 ,  G05F3/30 ,  G01K7/01

    Abstract: An apparatus includes a temperature measurement circuit. The temperature measurement circuit includes a bandgap circuit including an amplifier having an offset voltage that is compensated by using a set of trimming bits. The bandgap circuit provides first and second voltages related to a temperature to be measured. The temperature measurement circuit further includes a measuring circuit coupled to receive the first and second voltages. The measuring circuit further includes a comparator coupled to receive the first and second voltages, wherein the measuring circuit derives a temperature measurement from the first and second voltages.

    Low-power communication apparatus with wakeup detection and associated methods
    8.
    发明授权
    Low-power communication apparatus with wakeup detection and associated methods 有权

    公开(公告)号：US10514747B2

    公开(公告)日：2019-12-24

    申请号：US14869926

    申请日：2015-09-29

    Applicant: Silicon Laboratories Inc.

    Inventor： Kenneth W. Fernald ,  Thomas Saroshan David

    IPC: G06F1/3234 ,  G06F1/3206 ,  H04W52/02

    Abstract: An apparatus includes a communication circuit coupled to a communication link, a wakeup detector, and a power control circuit. The communication circuit has a first state and a second state. The power consumption of the communication circuit is lower in the second state than in the first state. The wakeup detector is coupled to the communication link. The wakeup detector generates a wakeup signal to cause the communication circuit to make a transition from the second state to the first state in response to an occurrence of an event on the communication link. The power control circuit selectively supplies power to the communication circuit in response to the wakeup signal.

    Maximum supply voltage selection
    10.
    发明授权
    Maximum supply voltage selection 有权

    公开(公告)号：US10090674B2

    公开(公告)日：2018-10-02

    申请号：US14860186

    申请日：2015-09-21

    Applicant: Silicon Laboratories Inc.

    Inventor： Mohamed Mostafa Elsayed ,  Kenneth W. Fernald ,  Axel Thomsen

    IPC: H02J1/10 ,  H03K5/24

    Abstract: A method includes providing supply voltages to a supply voltage switching circuit that controls routing of the supply voltages to power consuming circuitry associated with the supply voltage switching circuit. The method includes comparing the supply voltages, including using at least one relatively lower precision comparator to compare the supply voltages for a relatively large difference between the supply voltages; and using at least one relatively higher precision comparator to compare the supply voltages for a relatively smaller difference between the supply voltages. The method further includes, based on a result of comparing the supply voltages, selectively coupling the supply voltages to at least one of an isolation well and a power supply rail of the supply voltage switching circuit.

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