Transition detection at input of integrated circuit device
    1.
    发明授权
    Transition detection at input of integrated circuit device 失效
    集成电路设备输入端的过渡检测

    公开(公告)号:US07191348B2

    公开(公告)日:2007-03-13

    申请号:US10525579

    申请日:2003-07-22

    IPC分类号: G06F1/26

    摘要: An integrated circuit has an input connection for connecting an external signal conductor that passes signals to execute functions in the device. The external signal conductor can pick up strong interfering signals with high frequency content, for example when the device is used in a car. To protect against unintended execution of functions the device contains a timer circuit comprising a capacitance and a current supplying circuit coupled to an integration node. A discharge diode is coupled between the input connection and the integration node, with a polarity such that the discharge diode, when in forward bias, is capable of draining current from the current supplying circuit. A detector is coupled to the integration node for generating a signal to be supplied to the integrated circuit device to respond to a signal transition on the conductor. The diode serves to reset integration on the integration node before the detector detects the transition in case of short pulses. By using a diode instead of a switching transistor the circuit is more robust against the effect of interfering pulses.

    摘要翻译: 集成电路具有用于连接外部信号导体的输入连接,该外部信号导体通过信号以执行装置中的功能。 外部信号导体可以拾取高频内容的强干扰信号,例如当该装置用于汽车时。 为了防止意外执行功能,该设备包含定时器电路,该定时器电路包括耦合到集成节点的电容和电流供应电路。 放电二极管耦合在输入连接和积分节点之间,其极性使得放电二极管在正向偏压时能够从电流供应电路引出电流。 检测器耦合到积分节点,用于产生要提供给集成电路器件的信号以响应导体上的信号转变。 在检测器检测到短脉冲情况下的转换之前,二极管用于复位积分节点上的积分。 通过使用二极管代替开关晶体管,该电路相对于干扰脉冲的影响更为鲁棒。

    Line driver with current source output and high immunity to RF signals
    2.
    发明授权
    Line driver with current source output and high immunity to RF signals 有权
    具有电流源输出的线路驱动器和对RF信号的高抗扰度

    公开(公告)号:US06949963B2

    公开(公告)日:2005-09-27

    申请号:US10095348

    申请日:2002-03-11

    CPC分类号: H04L25/028

    摘要: Line driver for a LIN-bus. The line driver has a current source output transistor (T1) for pulling down the LIN-bus wire (LB) to ground (GND). The LIN-bus wire (LB) is connected to a positive supply voltage (VBAT) through a pull-up resistor (R1). The output transistor (T1) is driven by a driver stage (DRV) in response to an input current (J1) at an input node (X). The driver stage has a further resistor (R2) connected between the gate of the output transistor (T1) and a reference terminal (GND), a reference transistor (T2) which has its source connected to the reference terminal (GND) and its drain coupled to the input node (X); the gates of the output transistor (T1) and the reference transistor (T2) are connected to an output (DAO1) of a differential amplifier (DA1) which has an inverting input (DAN1) coupled to a bias voltage source (E2) and a non-inverting input (DAP1) coupled to the input node (X). The further resistor (R2) stage provides a low-impedance path to ground for RF disturbances reaching the gate of the output transistor (T1) through the drain-gate capacitance of the output transistor (T1) and prevents these disturbances from penetrating the driver stage.

    摘要翻译: 用于LIN总线的线路驱动器。 线路驱动器具有用于将LIN总线(LB)拉到地(GND)的电流源输出晶体管(T 1)。 LIN总线(LB)通过上拉电阻(R 1)连接到正电源电压(VBAT)。 响应于输入节点(X)处的输入电流(J 1),输出晶体管(T 1)由驱动级(DRV)驱动。 驱动级具有连接在输出晶体管(T 1)的栅极和参考端子(GND)之间的另一个电阻器(R 2),其源极连接到参考端子(GND)的参考晶体管(T 2) 并且其漏极耦合到输入节点(X); 输出晶体管(T 1)和参考晶体管(T 2)的栅极连接到差分放大器(DA 1)的输出(DAO 1),差分放大器(DA 1)具有耦合到偏置电压源 (E 2)和耦合到输入节点(X)的非反相输入(DAP 1)。 另外的电阻器(R 2)级通过输出晶体管(T 1)的漏极 - 栅极电容为RF输入端到达输出晶体管(T 1)的栅极提供了一个低阻抗路径,并防止这些干扰穿透 司机舞台。

    Power supply with extended minimum voltage output
    3.
    发明授权
    Power supply with extended minimum voltage output 有权
    电源具有延长的最小电压输出

    公开(公告)号:US08987934B2

    公开(公告)日:2015-03-24

    申请号:US13292181

    申请日:2011-11-09

    CPC分类号: G05F1/56

    摘要: Various exemplary embodiments relate a system for supplying power. The system may include a power source outputting a source voltage, a regulator connected to the power source, and an extension module connected to the power source. The regulator may output a first voltage when the source voltage is above a minimum threshold, and the extension module may output a second voltage when the source voltage falls below the minimum threshold.

    摘要翻译: 各种示例性实施例涉及用于供电的系统。 该系统可以包括输出源电压的电源,连接到电源的调节器和连接到电源的扩展模块。 当源电压高于最小阈值时,调节器可以输出第一电压,并且当电源电压下降到最小阈值以下时,扩展模块可以输出第二电压。

    Multi-mode power supply circuit with a normal operational mode and a pass-through operational mode and a method for operating the multi-mode power supply circuit
    6.
    发明授权
    Multi-mode power supply circuit with a normal operational mode and a pass-through operational mode and a method for operating the multi-mode power supply circuit 有权
    具有正常操作模式和直通操作模式的多模式电源电路以及用于操作多模式电源电路的方法

    公开(公告)号:US08810214B2

    公开(公告)日:2014-08-19

    申请号:US12895202

    申请日:2010-09-30

    IPC分类号: G05F1/00 H02M3/158 H02M1/00

    摘要: A power supply circuit and a method for operating a power supply circuit involves selecting a normal operational mode or a pass-through operational mode for a switched mode power supply, in the normal operational mode, converting an input voltage of a power supply circuit to an intermediate voltage using a switching regulator of the switched mode power supply, in the pass-through operational mode, disabling the switching regulator such that the input voltage of the power supply circuit is unchanged by the switching regulator and an electric current consumption of the switching regulator approaches zero, and converting the intermediate voltage or the input voltage of the power supply circuit to an output voltage using a linear voltage regulator.

    摘要翻译: 电源电路和用于操作电源电路的方法包括在正常操作模式中选择开关模式电源的正常操作模式或直通操作模式,将电源电路的输入电压转换为 使用开关型电源的开关调节器的中间电压,在通过操作模式下,禁用开关调节器,使得开关调节器的电源电路的输入电压不变,开关稳压器的电流消耗 接近零,并且使用线性电压调节器将电源电路的中间电压或输入电压转换为输出电压。

    MOS switching circuit
    7.
    发明授权
    MOS switching circuit 有权
    MOS开关电路

    公开(公告)号:US07482860B2

    公开(公告)日:2009-01-27

    申请号:US10586507

    申请日:2004-12-30

    IPC分类号: H03K17/72

    CPC分类号: H03K17/063 H03K17/6872

    摘要: An electronic circuit has a signal conductor (11), a power supply reference conductor (10) connected by a switching circuit. The switching circuit contains a PMOS transistor (17) and an NMOS transistor realized on a common substrate (100). The NMOS transistor (17) has a source coupled to the power supply reference conductor (10). The NMOS transistor (18) has a source coupled to the drain of the PMOS transistor (17), and a drain coupled to the signal conductor (11). A control circuit (13, 14, 15, 16) switches between an “on” state and an “off” state, in which the control circuit (13, 14, 15, 16) controls the gate source voltages of the first and second MOS transistor (17, 18) to make channels of these MOS transistors (17, 18) conductive and not to make the channels of these first and second transistors (17, 18) conductive respectively. Preferably a complementary switching circuit is also provided. The complementary switching circuit uses opposite polarity voltage differences, an NMOS transistor (27) coupled to a second power supply and a PMOS transistor (28) coupled to a signal conductor. The on resistances of the switching circuits are matched by matching the NMOS gate-source voltages, as well as the PMOS gate source voltages.

    摘要翻译: 电子电路具有由切换电路连接的信号导体(11),电源基准导体(10)。 开关电路包括PMOS晶体管(17)和在公共衬底(100)上实现的NMOS晶体管。 NMOS晶体管(17)具有耦合到电源参考导体(10)的源极。 NMOS晶体管(18)具有耦合到PMOS晶体管(17)的漏极的源极和耦合到信号导体(11)的漏极。 控制电路(13,14,15,16)在“开”状态和“关”状态之间切换,其中控制电路(13,14,15,16)控制第一和第二 MOS晶体管(17,18),以使这些MOS晶体管(17,18)的沟道导通,并且不使这些第一和第二晶体管(17,18)的沟道分别导通。 优选还提供互补开关电路。 互补开关电路使用相反的极性电压差,耦合到第二电源的NMOS晶体管(27)和耦合到信号导体的PMOS晶体管(28)。 通过匹配NMOS栅极 - 源极电压以及PMOS栅极源极电压来匹配开关电路的导通电阻。