-
公开(公告)号：US06977491B1
公开(公告)日：2005-12-20
申请号：US10680500
申请日：2003-10-06
CPC分类号： G05F1/573
摘要： A current limiting circuit. The current limiting circuit includes a device coupled to an output node of the current limiting circuit. The device is responsive to magnitude of a signal at the output node. Moreover, the device has a first mode and a second mode, depending on the magnitude of the signal. The current limiting circuit also has a regulation component that regulates a voltage at the output node when the device is in the first mode. The current limiting circuit also has an element having a current that limits current at the output node when the device is in the second mode.
摘要翻译： 限流电路。 限流电路包括耦合到限流电路的输出节点的装置。 该装置响应于输出节点处的信号的幅度。 此外，根据信号的大小，该装置具有第一模式和第二模式。 限流电路还具有调节部件，当器件处于第一模式时，其调节输出节点处的电压。 限流电路还具有当器件处于第二模式时具有限制输出节点处的电流的电流的元件。
-
公开(公告)号：US20100244793A1
公开(公告)日：2010-09-30
申请号：US12413247
申请日：2009-03-27
IPC分类号： G05F1/10
CPC分类号： H02M3/158
摘要： An average current mode switching converter is described for providing a regulated output current independent of load conditions, and a regulated output voltage as a function of the load connected to the converter. The converter comprises: an inductor; a modulator configured to provide a regulated current through the inductor; a feed back loop coupled between the inductor and the modulator for regulating the current through the inductor; and a precharger configured and arranged so as to provide and maintain a preset minimum current through the inductor independent of the load so as to improve the recovery time of the converter from a step in the desired regulated output current. Also disclosed is a method of providing a regulated output current independent of load conditions at the output of an average current mode switching converter, and a regulated output voltage as a function of the load connected to the output of converter. The method comprises: providing a regulated current through an inductor; and regulating the current through the inductor independent of the load so that a minimum current flows through the inductor so as to improve the recovery time of the converter from a step in the desired regulated output current.
摘要翻译： 描述了平均电流模式切换转换器，用于提供与负载条件无关的稳定输出电流，以及作为连接到转换器的负载的函数的稳定输出电压。 转换器包括：电感器; 调制器，被配置为提供经过所述电感器的调节电流; 耦合在电感器和调制器之间的反馈回路，用于调节通过电感器的电流; 以及预充电器，其配置和布置成提供并保持独立于负载的电感器的预设最小电流，从而提高转换器从期望的调节输出电流中的阶跃的恢复时间。 还公开了一种在平均电流模式切换转换器的输出处提供与负载条件无关的稳定输出电流的方法，以及作为连接到转换器的输出的负载的函数的调节输出电压的方法。 该方法包括：通过电感器提供调节电流; 并且通过电感器调节独立于负载的电流，使得最小电流流过电感器，以便改善转换器从期望的调节输出电流中的阶跃的恢复时间。
-
3.发明授权Voltage and current regulators with switched output capacitors for multiple regulation states 有权具有开关输出电容器的电压和电流调节器，用于多个调节状态公开(公告)号：US08901904B2
公开(公告)日：2014-12-02
申请号：US12508670
申请日：2009-07-24
IPC分类号： G05F1/56
CPC分类号： G05F1/56
摘要： A device and method of providing any one of a plurality of desired levels of a regulated signal output to a load is described, wherein each desired level is a function of a corresponding reference signal. The device is configured and the method is designed to (1) store each desired level of the regulated signal output on a switchable storage device; and (2) selectively switch the correct storage device to the output when switching from one regulated state to another so as to establish the desired level of regulated signal output.
摘要翻译： 描述了一种将多个期望等级的调节信号输出中的任何一个提供给负载的装置和方法，其中每个期望电平是对应参考信号的函数。 该设备被配置并且该方法被设计为（1）将可调节信号输出的每个期望电平存储在可切换存储设备上; 以及（2）从一个调节状态切换到另一个时，选择性地将正确的存储装置切换到输出，以便建立所需的稳定信号输出电平。
-
公开(公告)号：US08120335B2
公开(公告)日：2012-02-21
申请号：US12413247
申请日：2009-03-27
IPC分类号： G05F1/613
CPC分类号： H02M3/158
摘要： An average current mode switching converter is described for providing a regulated output current independent of load conditions, and a regulated output voltage as a function of the load connected to the converter. The converter includes an inductor, a modulator, a feedback loop, and a precharger. The modulator is configured to provide a regulated current through the inductor The feed back loop is coupled between the inductor and the modulator for regulating the current through the inductor. The precharger is configured and arranged so as to provide and maintain a preset minimum current through the inductor independent of the load so as to improve the recovery time of the converter from a step in the desired regulated output current. Also disclosed is a method of providing a regulated output current independent of load conditions at the output of an average current mode switching converter, and a regulated output voltage as a function of the load connected to the output of converter. The method includes the steps of providing a regulated current through an inductor; and regulating the current through the inductor independent of the load so that a minimum current flows through the inductor so as to improve the recovery time of the converter from a step in the desired regulated output current.
摘要翻译： 描述了平均电流模式切换转换器，用于提供与负载条件无关的稳定输出电流，以及作为连接到转换器的负载的函数的稳定输出电压。 该转换器包括电感器，调制器，反馈回路和预充电器。 调制器被配置成通过电感器提供调节电流。反馈回路耦合在电感器和调制器之间，用于调节通过电感器的电流。 预充电器被配置和布置成提供并保持独立于负载的电感器的预设最小电流，从而提高转换器从期望的调节输出电流中的阶跃的恢复时间。 还公开了一种在平均电流模式切换转换器的输出处提供与负载条件无关的稳定输出电流的方法，以及作为连接到转换器的输出的负载的函数的调节输出电压的方法。 该方法包括通过电感器提供调节电流的步骤; 并且通过电感器调节独立于负载的电流，使得最小电流流过电感器，以便改善转换器从期望的调节输出电流中的阶跃的恢复时间。
-
公开(公告)号：US07170352B1
公开(公告)日：2007-01-30
申请号：US11121785
申请日：2005-05-04
IPC分类号： H03F3/45
CPC分类号： H03F3/45475 , H03F3/217 , H03F3/45183 , H03F2200/297 , H03F2203/45136 , H03F2203/45454 , H03F2203/45626 , H03F2203/45722
摘要： A circuit for driving a capacitive load is provided. The circuit includes a differential signal sensor and a differential amplifier. The differential amplifier is arranged to drive the capacitive load. Further, the differential amplifier is arranged to receive an output voltage at one input, and to receive a reference voltage at another input. The output voltage is provided at the output of the differential amplifier. Also, the differential amplifier is arranged to receive a bias current. The differential signal sensor is arranged to determine whether the difference between the output voltage and the reference voltage is within a voltage window. If the difference between the output voltage and the reference voltage is inside of the voltage window, the bias current is provided at its normal value. However, if the difference between the output voltage and the reference voltage is outside of the voltage window, the bias current is increased so that the bias current linearly increases with respect to time.
摘要翻译： 提供用于驱动电容性负载的电路。 电路包括差分信号传感器和差分放大器。 差分放大器布置成驱动电容性负载。 此外，差分放大器布置成在一个输入处接收输出电压，并在另一个输入端接收参考电压。 输出电压提供在差分放大器的输出端。 此外，差分放大器布置成接收偏置电流。 差分信号传感器被布置成确定输出电压和参考电压之间的差是否在电压窗口内。 如果输出电压和参考电压之间的差值在电压窗口内，则偏置电流以其正常值提供。 然而，如果输出电压和参考电压之间的差异在电压窗口之外，则偏置电流增加，使得偏置电流相对于时间线性地增加。
-
公开(公告)号：US06969982B1
公开(公告)日：2005-11-29
申请号：US10678534
申请日：2003-10-03
CPC分类号： G05F3/265
摘要： A circuit having a voltage regulated by a reference current. The circuit includes a current feedback loop and a reference current source that is capable of producing a reference current. The current feedback loop includes an output device, a voltage to current converter, and a current feedback element. The voltage to current converter is coupled to the output device. A node of the voltage to current converter is the regulated voltage. The current feedback element is coupled to the voltage to current converter to provide a feedback current from the voltage to current converter to compare with the reference current to produce an error signal that is input to a control terminal of the output device. Thus, the current feedback loop regulates the voltage at the node of the voltage to current converter.
摘要翻译： 具有由参考电流调节的电压的电路。 该电路包括能够产生参考电流的电流反馈回路和参考电流源。 电流反馈回路包括输出装置，电压 - 电流转换器和电流反馈元件。 电压 - 电流转换器耦合到输出装置。 电压/电流转换器的节点是调节电压。 电流反馈元件耦合到电压 - 电流转换器以提供来自电压 - 电流转换器的反馈电流，以与参考电流进行比较，以产生输入到输出装置的控制端子的误差信号。 因此，电流反馈环路调节电压到电流转换器的节点处的电压。
-
7.发明授权公开(公告)号：US06879194B1
公开(公告)日：2005-04-12
申请号：US10648530
申请日：2003-08-25
CPC分类号： H03K17/223
摘要： An active power-on reset (POR) current comparator circuit creates a POR signal for resetting logic devices and masking reference startup signals during the initial power supply ramp of an integrated circuit. The comparator circuit provides a logic level signal (i.e., the POR signal) that will actuate when a bias current is above a predetermined level as compared to another current. The predetermined level for the bias current is set by a ratio established between two resistance levels within the active POR current comparator circuit.
摘要翻译： 有源上电复位（POR）电流比较器电路在集成电路的初始电源斜坡期间产生用于复位逻辑器件和屏蔽参考启动信号的POR信号。 当与另一个电流相比偏置电流高于预定电平时，比较器电路提供将启动的逻辑电平信号（即，POR信号）。 用于偏置电流的预定电平由在有效POR电流比较器电路内的两个电阻电平之间建立的比例来设定。
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.016 秒)
