Circuit for regulating startup and operation voltage of an electronic device

    公开(公告)号:US09651958B2

    公开(公告)日:2017-05-16

    申请号:US15131913

    申请日:2016-04-18

    CPC classification number: G05F1/468 G05F1/575

    Abstract: An electronic device includes a power supply, a ground, and an intermediate ground having a voltage less than a voltage of the power supply and greater than a voltage of the ground. The electronic device also includes an error amplifier having an input stage coupled between the power supply and the ground, and an output stage coupled between the power supply and the intermediate ground. A ballast transistor is coupled to receive an output from the error amplifier. A feedback circuit is coupled to an output of the ballast transistor to generate feedback signals, and the error amplifier operates in response to the feedback signals.

    Power management system and method of use thereof

    公开(公告)号:US09627967B2

    公开(公告)日:2017-04-18

    申请号:US14222430

    申请日:2014-03-21

    CPC classification number: H02M3/156 H02M2001/0025 Y10T307/406

    Abstract: One embodiment of a power management system includes a reservoir configured to collect energy. The system also includes a voltage regulator coupled to the reservoir via an input terminal and configured to convert the energy to an output voltage via an output terminal when enabled. A threshold detector is coupled to the reservoir and is configured to sense the energy and enable the voltage regulator when the energy exceeds a threshold. The system further includes a feedback circuit coupled between the output terminal and the threshold detector, and configured to feedback the output voltage to the threshold detector to compensate for a voltage drop across the threshold detector due to an output current drawn by the load.

    System and method for a pulse generator
    277.
    发明授权
    System and method for a pulse generator 有权
    脉冲发生器的系统和方法

    公开(公告)号:US09590602B2

    公开(公告)日:2017-03-07

    申请号:US14304357

    申请日:2014-06-13

    CPC classification number: H03K5/01 G11C7/222 G11C8/18

    Abstract: According to an embodiment, a method of generating a clock pulse includes receiving a leading edge at a clock input at a time when an enable signal is active, generating an edge at a clock output based on the received leading edge at the clock input, latching a logic value corresponding to the edge at the clock output, preventing changes at the clock input from affecting the latched logic value after the logic value is latched, resetting the latched logic value after a first delay time, and maintaining the reset logic value until a second edge is received at the clock input. The second edge at the clock input matches the leading edge at the clock input.

    Abstract translation: 根据实施例,一种产生时钟脉冲的方法包括在使能信号有效时在时钟输入端处接收前沿,在时钟输出端基于接收到的前沿产生时钟输出的边沿,锁存 对应于时钟输出端的逻辑值,防止在逻辑值被锁存之后时钟输入的变化影响锁存的逻辑值,在第一延迟时间之后复位锁存的逻辑值,并保持复位逻辑值直到 在时钟输入端接收第二个边沿。 时钟输入端的第二个边沿与时钟输入端的前沿匹配。

    Reference voltage generation circuit
    278.
    发明授权
    Reference voltage generation circuit 有权
    参考电压发生电路

    公开(公告)号:US09588538B2

    公开(公告)日:2017-03-07

    申请号:US14675309

    申请日:2015-03-31

    CPC classification number: G05F3/16 G05F3/26 G05F3/267 G05F3/30

    Abstract: A reference voltage generation circuit, including a first current source in series with a first bipolar transistor; a second current source in series with a first resistor; a third current source in series with a second bipolar transistor, the third current source being assembled as a current mirror with the first current source; a second resistor between the base of the second bipolar transistor and the junction point between the current source and the first resistor; and a fourth current source in series with a third resistor, the junction point between the fourth current source and the third resistor defining a reference voltage terminal.

    Abstract translation: 参考电压产生电路,包括与第一双极晶体管串联的第一电流源; 与第一电阻器串联的第二电流源; 与第二双极晶体管串联的第三电流源,所述第三电流源被组装为具有所述第一电流源的电流镜; 第二电阻器,位于第二双极晶体管的基极与电流源与第一电阻之间的连接点之间; 以及与第三电阻器串联的第四电流源,所述第四电流源和所述第三电阻器之间的连接点限定参考电压端子。

    RFID transponder device and method for production of an RFID transponder device
    279.
    发明授权
    RFID transponder device and method for production of an RFID transponder device 有权
    RFID应答器设备和用于生产RFID应答器设备的方法

    公开(公告)号:US09576237B2

    公开(公告)日:2017-02-21

    申请号:US14903584

    申请日:2014-06-12

    CPC classification number: G06K19/07773 G06K19/0715 G06K19/07749 G06K19/0775

    Abstract: An RFID transponder device has antenna terminals for coupling an antenna system to the device. A transmitter and a receiver are coupled to the antenna terminals. The device has at least one damping resistance connected to at least one of the antenna terminals. The at least one damping resistance is connected, depending on a voltage swing at the antenna terminals during a transmission burst period, either together with a serially connected switch in parallel to the antenna terminals that are coupled to the receiver, or together with a parallel connected switch between one of the antenna terminals and a terminal of the transmitter. A damping control is configured to activate the at least one damping resistance during a damping period after the transmission burst period by controlling the respective switch.

    Abstract translation: RFID应答器设备具有用于将天线系统耦合到设备的天线端子。 发射器和接收器耦合到天线端子。 该装置具有连接到至少一个天线端子的至少一个阻尼电阻。 至少一个阻尼电阻根据传输脉冲串期间天线端子处的电压摆幅而连接,或者连接到与接收器耦合的天线端子并联连接的串联开关,或者与并联连接 在天线终端之一和发射机的终端之间切换。 阻尼控制被配置为通过控制相应的开关来在传输脉冲串周期之后的阻尼时段期间激活至少一个阻尼电阻。

    Charge pump circuit for a phase locked loop
    280.
    发明授权
    Charge pump circuit for a phase locked loop 有权
    电荷泵电路用于锁相环

    公开(公告)号:US09559708B2

    公开(公告)日:2017-01-31

    申请号:US15229322

    申请日:2016-08-05

    Inventor: Abhirup Lahiri

    CPC classification number: H03L7/0891 H03L7/099

    Abstract: Disclosed herein is a circuit including a phase frequency detector (PFD) configured to compare phases of an input signal and a feedback signal, and to generate first and second control signals as a function of that comparison. An attenuation circuit includes a capacitor coupled in series between a node and a switching node, and is configured to charge the capacitor and disconnect the switching node from ground based on assertion of the first control signal, and discharge the capacitor and connect the switching node to ground based on assertion of the second control signal.

    Abstract translation: 这里公开了一种电路,其包括被配置为比较输入信号和反馈信号的相位的相位频率检测器(PFD),并且作为该比较的函数产生第一和第二控制信号。 衰减电路包括串联耦合在节点和开关节点之间的电容器,并且被配置为基于第一控制信号的断言对电容器充电并将开关节点与地断开,并且将开关节点放电到 基于第二控制信号的断言接地。

Patent Agency Ranking