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    • 11. 发明申请
    • POWER SUPPLY SWITCHING APPARATUS WITH SEVERE OVERLOAD DETECTION
    • 具有严重过载检测功能的电源开关装置
    • US20100020450A1
    • 2010-01-28
    • US12518929
    • 2006-12-22
    • Laurent GuillotPierre Turpin
    • Laurent GuillotPierre Turpin
    • H02H7/00
    • H03K17/0822H02H3/087H03K17/166H03K2217/0027
    • Power supply switching apparatus comprising an output switch for supplying power from a power supply to a load connected to an output terminal, a driver for controlling turn-on of said output switch, and a control signal generator for controlling said driver to produce a desired progressive turn-on characteristic. The apparatus also includes overload detection means responsive to a parameter of the load relative to a reference signal to provide a fault signal in case of detection of an overload condition after a turn-on phase of said output switch. The control signal generator is responsive to the reference signal to activate said overload detection means to provide a fault signal during the turn-on phase of the output switch even in presence of a severe overload condition at the output terminal.
    • 电源开关装置,包括用于从电源向连接到输出端子的负载供电的输出开关,用于控制所述输出开关的导通的驱动器,以及控制信号发生器,用于控制所述驱动器以产生期望的渐进 开启特性。 该装置还包括响应于相对于参考信号的负载参数的过载检测装置,以便在检测到所述输出开关的接通阶段之后的过载状况的情况下提供故障信号。 控制信号发生器响应于参考信号来激活所述过载检测装置,即使在输出端子处存在严重的过载条件时,也可在输出开关的接通阶段期间提供故障信号。
    • 13. 发明申请
    • Current Driver Circuit and Method of Operation Therefor
    • 电流驱动电路及其操作方法
    • US20080204957A1
    • 2008-08-28
    • US11911807
    • 2005-04-18
    • Pierre TurpinLaurent Guillot
    • Pierre TurpinLaurent Guillot
    • H02H9/08
    • H05B39/00
    • A current driver circuit comprises circuitry having a current adjustment function and operably coupled to a current driver for providing a current to a current consuming device. The circuitry comprises or is operably coupled to a function arranged to determine a current level being drawn by the current consuming device. The current adjustment function varies an over-load limit applied to the current driver in response to a variation in the determined current level.In this manner, the current level being drawn by a current consuming device, such as a light bulb, is used to continuously or intermittently adjusting the current limit of a current driver circuit, such as a lamp driver, to minimize the energy dissipated in case of an overload condition.
    • 电流驱动器电路包括具有电流调节功能并且可操作地耦合到电流驱动器的电路,用于向电流消耗装置提供电流。 电路包括或可操作地耦合到布置成确定由当前消耗装置绘制的当前电平的功能。 电流调节功能响应于所确定的电流电平的变化而改变施加到电流驱动器的过载限制。 以这种方式,由诸如灯泡的电流消耗装置吸取的电流被用于连续或间歇地调节诸如灯驱动器的电流驱动器电路的电流极限,以最小化在情况下消耗的能量 的过载条件。
    • 14. 发明授权
    • Apparatus for detecting clock failure and method therefor
    • 用于检测时钟故障的装置及其方法
    • US07924061B2
    • 2011-04-12
    • US12294798
    • 2006-03-27
    • Laurent GuillotKamel AboudaPierre Turpin
    • Laurent GuillotKamel AboudaPierre Turpin
    • H03K5/19
    • G01R29/0273G06F1/24
    • A clock failure detection circuit comprises clock failure detection logic having a clock input providing an input clock signal, a counter and a reference clock input providing a reference clock signal to the counter for counting a number of reference clock cycles. The counter comprises a reset input arranged to receive successive reset pulses generated by at least one clock edge of the input clock signal to reset a counter value of the counter. The counter value before reset is used to identify a clock frequency error. A method of detecting a clock failure is also described. By using a counter value based on the reference clock cycles, and a reset trigger based on a clock edge of the input signal, it is possible to identify a clock frequency error in a much shorter time.
    • 时钟故障检测电路包括具有提供输入时钟信号的时钟输入的时钟故障检测逻辑,计数器和向计数器提供参考时钟信号的参考时钟输入,用于对多个参考时钟周期进行计数。 计数器包括复位输入,该复位输入被布置成接收由输入时钟信号的至少一个时钟沿产生的连续复位脉冲,以重置计数器的计数器值。 复位前的计数器值用于识别时钟频率误差。 还描述了一种检测时钟故障的方法。 通过使用基于参考时钟周期的计数器值和基于输入信号的时钟沿的复位触发,可以在更短的时间内识别时钟频率误差。
    • 16. 发明申请
    • Power Switching Apparatus With Open-Load Detection
    • 具有开路负载检测功率开关装置
    • US20080259515A1
    • 2008-10-23
    • US11576134
    • 2004-11-26
    • Pierre TurpinLaurent GuillotErwan HemonUli JoosJosef Schnell
    • Pierre TurpinLaurent GuillotErwan HemonUli JoosJosef Schnell
    • H02H3/00
    • H02H3/12
    • Power switching apparatus comprising switch means having a control terminal and output terminals for connection in series between a power supply and a load. The switch means is responsive to a control signal applied to the control terminal to switch between an ON-state in which it supplies power supply current from the power supply through the output terminals to the load and an OFF-state in which it interrupts the supply of power through the output terminals to the load. The apparatus includes detection means for detecting an open-load condition of the load at least during the ON-state of the switch means, comprising detection control means operable in the ON-state of the switch means for modifying the control signal so as to start switching the switch means to the OFF-state during a lapse of time substantially less than the time required for the switch means to reach the OFF-state and for restoring the control signal to a value corresponding to the ON-state at or before the end of the lapse of time, and comparator means responsive to variation of voltage at the output terminals during the lapse of time. The duration of the variation of voltage during the open-load detection is too short and its magnitude too small for the variation of load current to be perceptible, notably in the case where the load is a lamp.
    • 电力开关装置包括具有用于在电源和负载之间串联连接的控制端子和输出端子的开关装置。 开关装置响应于施加到控制端子的控制信号,以在从电源通过输出端子向负载提供电源电流的接通状态和其中断供电的断开状态之间切换 的电源通过输出端子到负载。 该装置包括至少在开关装置的接通状态期间检测负载的开路状态的检测装置,包括检测控制装置,其可在开关装置的接通状态下操作,用于修改控制信号以便起动 在大大小于开关装置达到关闭状态所需的时间的时间内,将开关装置切换到关闭状态,并且将控制信号恢复到与结束时或之前的接通状态对应的值 以及响应于在时间间隔期间输出端子处的电压变化的比较器装置。 开路负载检测期间电压变化的持续时间太短,其负载电流变化的幅度太小,特别是在负载为灯的情况下。
    • 17. 发明申请
    • Current Driver Circuit and Method of Operation Therefor
    • 电流驱动电路及其操作方法
    • US20080203942A1
    • 2008-08-28
    • US11911805
    • 2005-04-18
    • Pierre TurpinLaurent Guillot
    • Pierre TurpinLaurent Guillot
    • H05B41/285H05B41/36
    • H05B39/02
    • A current driver circuit comprises a digital circuitry having a current adjustment function and operably coupled to a current driver for providing a current to a current consuming device. The digital circuitry comprises, or is operably coupled to, a function arranged to determine a load impedance associated with the current consuming device. The current adjustment function varies a current limit applied to the current driver in response to a variation in the load impedance.In this manner, the load impedance (or temperature) of a current consuming device, such as a light bulb, is used to continuously or intermittently adjusting the current limit of a current driver circuit, such as a lamp driver, to minimize the energy dissipated in case of an overload condition.
    • 电流驱动器电路包括具有电流调节功能的数字电路,并且可操作地耦合到当前驱动器以向电流消耗装置提供电流。 数字电路包括或可操作地耦合到布置成确定与当前消耗装置相关联的负载阻抗的功能。 电流调节功能响应于负载阻抗的变化而改变施加到电流驱动器的电流限制。 以这种方式,电流消耗装置(例如灯泡)的负载阻抗(或温度)用于连续或间歇地调节诸如灯驱动器的电流驱动器电路的电流极限,以使能量消耗最小化 在过载情况下。