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    Bidirectional voltage differentiator circuit
    22.
    发明授权
    Bidirectional voltage differentiator circuit 有权
    双向电压微分电路

    公开(公告)号：US09366701B2

    公开(公告)日：2016-06-14

    申请号：US13648412

    申请日：2012-10-10

    Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.

    Inventor： Yijun Duan

    IPC: G05F1/00 ,  H05B37/02 ,  H05B39/04 ,  H05B41/36 ,  G01R19/12 ,  G01R19/165

    CPC classification number: G01R19/12 ,  G01R19/16557 ,  H05B33/0845 ,  H05B33/0887

    Abstract: A bidirectional voltage differentiator circuit comprises start-up circuitry, sensing circuitry, and output circuitry coupled to logic circuitry. The start-up circuitry acts to start-up the sensing circuitry when the circuit is powered on, and accelerates the response of the sensing circuitry thereafter. The sensing circuitry senses variation in an input voltage applied to an input node. Responsive to the voltage variation sensed by the sensing circuitry, the output circuitry produces a state change at a first or second output node. The logic circuitry receives the states of the output nodes and produces a logic output signal to indicate the occurrence of the variation sensed in the input voltage. The voltage sensing circuit is operable to sense variation of the input voltage regardless of whether the voltage is rising or falling and without regard to the DC value of the input voltage.

    Abstract translation: 双向电压微分电路包括启动电路，感测电路和耦合到逻辑电路的输出电路。 启动电路用于在电路通电时启动感测电路，此后加速感测电路的响应。 感测电路感测施加到输入节点的输入电压的变化。 响应于由感测电路感测的电压变化，输出电路在第一或第二输出节点处产生状态改变。 逻辑电路接收输出节点的状态并产生逻辑输出信号以指示在输入电压中检测到的变化的发生。 电压感测电路可操作以感测输入电压的变化，而不管电压是上升还是下降，而不考虑输入电压的DC值。

    SWITCHING CONVERTER TO OPERATE IN PULSE WIDTH MODULATION MODE OR PULSE SKIPPING MODE
    24.
    发明申请
    SWITCHING CONVERTER TO OPERATE IN PULSE WIDTH MODULATION MODE OR PULSE SKIPPING MODE 有权
    切换转换器在脉冲宽度调制模式或脉冲跳闸模式下工作

    公开(公告)号：US20160103463A1

    公开(公告)日：2016-04-14

    申请号：US14531314

    申请日：2014-11-03

    Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd

    Inventor： Meng Wang ,  Xue Lian Zhou

    IPC: G05F3/26

    CPC classification number: G05F3/262 ,  H02M1/08 ,  H02M3/158 ,  H02M2001/0032 ,  Y02B70/16

    Abstract: An electronic device may include a switching converter configured to convert an input voltage to an output voltage, and being selectively operable in a pulse skipping mode based upon a control signal. The switching converter may include a comparator having a first input configured to receive an error signal, a second input configured to receive a skipping mode reference signal, and an output configured to generate the control signal. A reference generator may be configured to generate the skipping mode reference signal as a function of a difference between the output voltage and the input voltage.

    Abstract translation: 电子设备可以包括被配置为将输入电压转换为输出电压并且可以基于控制信号以脉冲跳过模式选择性地操作的开关转换器。 开关转换器可以包括具有被配置为接收错误信号的第一输入的比较器，被配置为接收跳过模式参考信号的第二输入和被配置为产生控制信号的输出。 参考发生器可以被配置为根据输出电压和输入电压之间的差产生跳跃模式参考信号。

    Image detector with lens assembly and related methods
    25.
    发明授权
    Image detector with lens assembly and related methods 有权
    具有镜头组件和相关方法的图像检测器

    公开(公告)号：US09313386B2

    公开(公告)日：2016-04-12

    申请号：US14336060

    申请日：2014-07-21

    Applicant: STMICROELECTRONICS (SHENZHEN) R&D CO., LTD.

    Inventor： Jing-En Luan

    IPC: G02B13/16 ,  H04N5/225 ,  G02B7/02 ,  H01L27/146

    CPC classification number: H04N5/2254 ,  G02B7/025 ,  H01L27/14618 ,  H01L27/14625 ,  H01L27/14685 ,  H01L27/14687 ,  H01L2924/0002 ,  Y10T156/1052 ,  H01L2924/00

    Abstract: An electronic device may include a substrate, an image sensor IC over the substrate, and a lens assembly above the substrate. The lens assembly may include a spacer above the substrate, a first adhesive layer over the spacer, a lens aligned with the image sensor IC and over the first adhesive layer, a second adhesive layer surrounding a peripheral surface of the lens and the first adhesive layer, and a baffle over the lens and the second adhesive layer.

    Abstract translation: 电子设备可以包括衬底，在衬底上的图像传感器IC，以及在衬底上方的透镜组件。 透镜组件可以包括衬底上方的间隔物，间隔物上方的第一粘合剂层，与图像传感器IC对准的透镜并且在第一粘合剂层上方，包围透镜的外周表面的第二粘合剂层和第一粘合剂层 ，以及透镜和第二粘合剂层上的挡板。

    BIDIRECTIONAL VOLTAGE DIFFERENTIATOR CIRCUIT
    26.
    发明申请
    BIDIRECTIONAL VOLTAGE DIFFERENTIATOR CIRCUIT 审中-公开

    公开(公告)号：US20160100468A1

    公开(公告)日：2016-04-07

    申请号：US14966129

    申请日：2015-12-11

    Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd

    Inventor： Yi Jun Duan

    IPC: H05B33/08 ,  G01R19/165

    CPC classification number: G01R19/12 ,  G01R19/16557 ,  H05B33/0845 ,  H05B33/0887

    Abstract: A bidirectional voltage differentiator circuit comprises start-up circuitry, sensing circuitry, and output circuitry coupled to logic circuitry. The start-up circuitry acts to start-up the sensing circuitry when the circuit is powered on, and accelerates the response of the sensing circuitry thereafter. The sensing circuitry senses variation in an input voltage applied to an input node. Responsive to the voltage variation sensed by the sensing circuitry, the output circuitry produces a state change at a first or second output node. The logic circuitry receives the states of the output nodes and produces a logic output signal to indicate the occurrence of the variation sensed in the input voltage. The voltage sensing circuit is operable to sense variation of the input voltage regardless of whether the voltage is rising or falling and without regard to the DC value of the input voltage.

    BOOST CONVERTER WITH CIRCUIT TO CONTROL THE BODY OF THE BOOST OUTPUT RECTIFICATION TRANSISTOR AND METHOD
    28.
    发明申请
    BOOST CONVERTER WITH CIRCUIT TO CONTROL THE BODY OF THE BOOST OUTPUT RECTIFICATION TRANSISTOR AND METHOD 有权
    具有电路的升压转换器来控制升压输出整流晶体管和方法

    公开(公告)号：US20160065066A1

    公开(公告)日：2016-03-03

    申请号：US14493436

    申请日：2014-09-23

    Applicant: STMICROELECTRONICS (SHENZHEN) R&D CO. LTD

    Inventor： Hai Bo Zhang ,  Sanford Li

    IPC: H02M3/158 ,  H02M1/36

    CPC classification number: H02M3/1588 ,  H02M1/36 ,  H02M3/158 ,  H03K17/04 ,  H03K17/162 ,  H03K2217/0054 ,  Y02B70/1466

    Abstract: A first softstart signal indicates operation in a load phase for a boost rectifier and a second softstart signal indicates operation in a pulse drive phase which follows the load phase. A rectification transistor is actuated for the duration of the load phase in response to the first softstart circuit to generate a rising output voltage. The rectification transistor is further repeatedly actuated during the pulse drive phase in response to the second softstart circuit to generate a boosted output voltage. A first transistor coupled between a first conduction terminal and a body terminal of the rectification transistor is actuated, and a second transistor coupled between the body terminal and a second conduction terminal of the rectification transistor is deactuated, during the load phase. The first transistor is deactuated, and the second transistor is actuated, during the pulse drive phase.

    Abstract translation: 第一软启动信号指示用于升压整流器的负载阶段的操作，并且第二软启动信号指示在跟随负载阶段的脉冲驱动阶段中的操作。 响应于第一软启动电路，整流晶体管在负载阶段的持续时间内被致动以产生上升的输出电压。 响应于第二软启动电路，在脉冲驱动阶段期间，整流晶体管进一步被重新启动以产生升压的输出电压。 耦合在整流晶体管的第一导电端子和体电极端子之间的第一晶体管被致动，并且耦合在整流晶体管的主体端子和第二导通端子之间的第二晶体管在负载阶段期间被去激活。 在脉冲驱动阶段期间，第一晶体管被去激活，并且第二晶体管被致动。

    CURRENT STEERING MODE DIGITAL-TO-ANALOG CONVERTER CIRCUIT CONFIGURED TO GENERATE VARIABLE OUTPUT CURRENT
    29.
    发明申请
    CURRENT STEERING MODE DIGITAL-TO-ANALOG CONVERTER CIRCUIT CONFIGURED TO GENERATE VARIABLE OUTPUT CURRENT 有权
    电流转向模式数字到模拟转换器电路配置生成可变输出电流

    公开(公告)号：US20160062384A1

    公开(公告)日：2016-03-03

    申请号：US14504494

    申请日：2014-10-02

    Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd

    Inventor： Meng Wang ,  Xue Lian Zhou

    IPC: G05F3/26 ,  H05B33/08

    CPC classification number: G05F3/262 ,  H03M1/745 ,  H05B33/0809 ,  H05B33/0815

    Abstract: A current source circuit is configured to receive a reference current at the input circuit path of a current mirror circuit. The current mirror circuit mirrors the reference current and generates mirror currents at a number of output circuit paths. A corresponding number of control transistors are connected in series with the output circuit paths. Each control transistor is selectively actuated in response to a control signal. A decoder circuit is configured to receive a variable control signal and generate actuation signals in response thereto to selective actuate the control transistors to pass the mirror current to an output node. At the output node, the passed mirror currents are summed to generate a variable output current. The variable current is monotonically modulated in response to the variable control signal.

    Abstract translation: 电流源电路被配置为在电流镜电路的输入电路路径处接收参考电流。 电流镜电路反映参考电流并在多个输出电路路径上产生镜像电流。 相应数量的控制晶体管与输出电路路径串联连接。 每个控制晶体管响应于控制信号被选择性地致动。 解码器电路被配置为接收可变控制信号并响应于此产生致动信号以选择性地致动控制晶体管以将镜电流传递到输出节点。 在输出节点，将通过的镜像电流相加以产生可变输出电流。 可变电流响应于可变控制信号被单调调制。

    Advanced current limit function for audio amplifier
    30.
    发明授权
    Advanced current limit function for audio amplifier 有权
    音频放大器的高级限流功能

    公开(公告)号：US09276530B1

    公开(公告)日：2016-03-01

    申请号：US14487313

    申请日：2014-09-16

    Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd

    Inventor： Qi Yu Liu ,  Ru Feng Du

    IPC: H03F3/217 ,  H03F1/52 ,  H02H3/08 ,  H03F3/183

    CPC classification number: H03F1/523 ,  H03F3/183 ,  H03F3/185 ,  H03F3/211 ,  H03F3/2171 ,  H03F3/2173 ,  H03F3/45475 ,  H03F2200/03 ,  H03F2200/462 ,  H03F2200/78 ,  H03F2203/45512 ,  H03F2203/45528 ,  H03F2203/45594

    Abstract: A class-D audio amplifier incorporates an overcurrent protection scheme implementing two overcurrent thresholds to avoid a dynamic impedance drop. When output current reaches the first threshold as a result of an impedance drop across the speaker, the overcurrent protection circuitry limits the output current to the value of the first threshold, but does not shut down the circuit. The second threshold is used to detect an overcurrent condition to shut down the circuit. Current limiting logic of a first channel monitors the overcurrent condition of a second channel and controls the first channel output in response thereto. This permits the second channel output current to reach the second threshold if the circuit is experiencing a short-circuit condition. This scheme also allows the output current to drop below the first threshold if the overcurrent condition of the second channel is caused by an impedance drop across the output speaker.

    Abstract translation: D类音频放大器包含实现两个过流阈值的过流保护方案，以避免动态阻抗下降。 当输出电流由于扬声器上的阻抗降低而达到第一阈值时，过电流保护电路将输出电流限制在第一阈值的值，但不关闭电路。 第二个阈值用于检测过电流状态以关闭电路。 第一通道的电流限制逻辑监视第二通道的过电流状况并响应于此控制第一通道输出。 这允许第二通道输出电流达到第二阈值，如果电路正在经历短路状态。 如果第二通道的过电流状态是由输出扬声器上的阻抗下降引起的，则该方案还允许输出电流降至低于第一阈值。

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