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    Audio device switching with reduced pop and click
    1.
    发明授权
    Audio device switching with reduced pop and click 有权
    音频设备切换，减少流行和点击

    公开(公告)号：US08779962B2

    公开(公告)日：2014-07-15

    申请号：US13860203

    申请日：2013-04-10

    申请人： Fairchild Semiconductor Corporation

    发明人： John L. Carpentier ,  Julie Lynn Stultz ,  Steven Macaluso

    IPC分类号： H03M1/12

    CPC分类号： H03M1/34 ,  H03K17/163 ,  H03K2217/0054 ,  H03M1/12

    摘要： This document discusses, among other things, apparatus and methods including an analog-to-digital controller (ADC) configured to receive an enable signal and to provide an ADC output signal to control logic, wherein the control logic is configured to provide a control voltage to a control input of a switch. In an example, the control voltage includes the ADC output signal when the ADC output signal is below a first threshold or above a second threshold. In certain examples, the control logic is configured to transition the control voltage from the first threshold to the second threshold when the ADC output signal is between the first and second thresholds.

    摘要翻译： 本文件尤其涉及包括被配置为接收使能信号并向控制逻辑提供ADC输出信号的模拟 - 数字控制器（ADC）的装置和方法，其中所述控制逻辑被配置为提供控制电压 到开关的控制输入。 在一个示例中，当ADC输出信号低于第一阈值或高于第二阈值时，控制电压包括ADC输出信号。 在某些示例中，当ADC输出信号在第一和第二阈值之间时，控制逻辑被配置为将控制电压从第一阈值转换到第二阈值。

    NO POP SWITCH
    2.
    发明申请
    NO POP SWITCH 有权
    没有POP开关

    公开(公告)号：US20140098297A1

    公开(公告)日：2014-04-10

    申请号：US14103013

    申请日：2013-12-11

    申请人： Fairchild Semiconductor Corporation

    发明人： Julie Lynn Stultz ,  Steven Macaluso ,  Enrique O. Rodriguez

    IPC分类号： H03K17/16

    CPC分类号： H03K17/16 ,  H03K17/005 ,  H03K17/30 ,  Y10T307/76

    摘要： A switch can be configured to receive a first signal at a first input and provide an output signal at an output, depending on a state of the switch. A switch state change can be delayed until an indication of a requested switch state different than a current switch state is received and the first signal reaches a threshold.

    摘要翻译： 开关可以被配置为在第一输入处接收第一信号，并且根据开关的状态在输出端提供输出信号。 可以延迟开关状态改变，直到接收到与当前开关状态不同的请求开关状态的指示，并且第一信号达到阈值。

    CONSTANT POWER AVAILABILITY FOR LOAD SWITCHES WITH FOLDBACK CURRENT
    3.
    发明申请
    CONSTANT POWER AVAILABILITY FOR LOAD SWITCHES WITH FOLDBACK CURRENT 审中-公开
    具有回流电流的负载开关的恒定功率可用性

    公开(公告)号：US20150130433A1

    公开(公告)日：2015-05-14

    申请号：US14535617

    申请日：2014-11-07

    申请人： Fairchild Semiconductor Corporation

    发明人： Hrvoje Jasa ,  Steven Macaluso

    IPC分类号： G05F1/625

    CPC分类号： G05F1/561 ,  G05F1/66 ,  G06F1/30 ,  H03K17/0822 ,  H03K2017/0806

    摘要： Load switch supply circuits and methods are provided that allow a load switch to maintain power delivery without having the load switch encounter thermal or power overload conditions. In an example, a load switch supply circuit can include a multiplier circuit configured to receive a first representation of voltage across a load switch and a representation of current provided by the load switch and to provide a representation of power dissipated by the load switch, and a control amplifier configured to compare the representation of power dissipated by the load switch to a power threshold and to adjust a control terminal of the load switch to avoid cycling the load switch to an off state due to thermal overload or power overload conditions.

    摘要翻译： 提供负载开关电源电路和方法，允许负载开关在不使负载开关遇到热或电力过载条件的情况下维持供电。 在一个示例中，负载开关电源电路可以包括被配置为接收负载开关上的电压的第一表示和由负载开关提供的电流的表示并且提供由负载开关消耗的功率的表示的乘法器电路，以及 控制放大器，其被配置为将由负载开关消耗的功率的表示与功率阈值进行比较，并且调整负载开关的控制端子，以避免由于热过载或电力过载条件而使负载开关循环到断开状态。