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    • 52. 发明授权
    • System and method for current limiting a DC-DC converter
    • 用于限流DC-DC转换器的系统和方法
    • US08754623B2
    • 2014-06-17
    • US13687090
    • 2012-11-28
    • Intersil Americas LLC
    • Congzhong HuangSicheng ChenXuelin Wu
    • G05F1/44
    • G05F1/46H02M1/15H02M1/32H02M3/1582
    • A DC-DC voltage converter has a pair of switching transistors to provide an output voltage and are alternately switched in a boost mode of operation responsive to control signals. An inductor is connected to the pair of switching transistor and has an inductor current flowing there through. A current sensor monitors an input current and generates a current sense signal responsive thereto. Control circuitry generates the control signals to the second pair of switching transistors responsive to the current sense signal, the output voltage and a current limit signal, wherein when the current limit signal indicates the inductor current exceeds a current limit the control signals configure the pair of switching transistors to decrease the inductor current.
    • DC-DC电压转换器具有一对开关晶体管以提供输出电压,并且响应于控制信号而在升压操作模式中交替切换。 电感器连接到该对开关晶体管,并且具有在其中流过的电感器电流。 电流传感器监测输入电流并响应于此产生电流检测信号。 响应于电流感测信号,输出电压和电流限制信号,控制电路产生对第二对开关晶体管的控制信号,其中当电流限制信号指示电感器电流超过电流限制时,控制信号配置一对 开关晶体管降低电感电流。
    • 54. 发明申请
    • LOW POWER ANALOG SWITCH CIRCUITS THAT PROVIDE OVER-VOLTAGE, UNDER-VOLTAGE AND POWER-OFF PROTECTION, AND RELATED METHODS AND SYSTEMS
    • 提供过压,欠压和断电保护的低功耗模拟开关电路及相关方法和系统
    • US20140085761A1
    • 2014-03-27
    • US13629254
    • 2012-09-27
    • INTERSIL AMERICAS LLC
    • Gregg D. Croft
    • H02H3/20
    • H03K17/0822H03K2217/0054
    • Analog switch circuits, methods for use with analog switch circuits, and devices and systems including analog switch circuits are disclosed herein. Such analog switch circuits include an analog switch input terminal (In), an analog switch output terminal (Out), and an analog switch control terminal (Ctl). During a normal-voltage condition, the input terminal (In) of the analog switch circuit is selectively connected and disconnected to/from the output terminal (Out) in dependence on a control signal received at the control terminal (Ctl). During an over-voltage condition, the input terminal (In) is disconnected from the output terminal (Out) regardless of the control signal received at the control terminal (Ctl). Additionally, during an under-voltage condition, the input terminal (In) is disconnected from the output terminal (Out) regardless of the control signal received at the analog switch control terminal (Ctl). In specific embodiments, symmetric protection and/or power-off protection is/are also provided.
    • 本文公开了模拟开关电路,与模拟开关电路一起使用的方法,以及包括模拟开关电路的装置和系统。 这种模拟开关电路包括模拟开关输入端(In),模拟开关输出端(Out)和模拟开关控制端(Ctl)。 在正常电压状态期间,模拟开关电路的输入端(In)根据在控制端(Ct1)处接收到的控制信号选择性地与输出端(Out)连接和断开。 在过电压状态下,与控制端子(Ctl)接收的控制信号无关,输入端子(In)与输出端子(Out)断开。 此外,在欠压状态下,与模拟开关控制端子(Ctl)接收的控制信号无关,输入端子(In)与输出端子(Out)断开。 在具体实施例中,还提供了对称保护和/或断电保护。
    • 56. 发明申请
    • ELECTROSTATIC DISCHARGE CLAMP WITH CONTROLLED HYSTERESIS INCLUDING SELECTABLE TURN ON AND TURN OFF THRESHOLD VOLTAGES
    • 具有可控选择开启和关闭阈值电压的控制滞后的静电放电钳
    • US20130100562A1
    • 2013-04-25
    • US13714096
    • 2012-12-13
    • Intersil Americas LLC
    • Gregg D. Croft
    • H02H9/04H05K3/32
    • H02H9/044H01L27/0251H01L2924/0002H05K3/32Y10T29/49117H01L2924/00
    • An electrostatic discharge (ESD) clamp for coupling between first and second nodes for providing ESD protection including first and second voltage threshold circuits. The clamp circuit limits operating voltage between the first and second nodes to a maximum level when activated. The first and second voltage threshold circuits each have a selectable threshold voltage, such as by coupling one or more voltage threshold devices in series. The first and second voltage threshold circuits trigger to turn on the clamp circuit when the operating voltage increases above a first voltage threshold. The voltage threshold circuits are turned off to turn off the clamp circuit when the operating voltage decreases to the second threshold voltage. The second threshold voltage may be selected at any level above the nominal operating voltage to prevent the clamp from latching.
    • 用于在第一和第二节点之间耦合用于提供包括第一和第二电压阈值电路的ESD保护的静电放电(ESD)钳位。 钳位电路将第一和第二节点之间的工作电压限制为最大电平。 第一和第二电压阈值电路各自具有可选择的阈值电压,例如通过串联耦合一个或多个电压阈值器件。 当工作电压增加到高于第一电压阈值时,第一和第二电压阈值电路触发钳位电路接通。 当工作电压降低到第二阈值电压时,电压阈值电路被关断以关闭钳位电路。 可以在高于额定工作电压的任何电平上选择第二阈值电压,以防止钳位锁定。
    • 57. 发明申请
    • SYSTEM AND METHOD FOR CURRENT LIMITING A DC-DC CONVERTER
    • 限流直流 - 直流转换器的系统和方法
    • US20130088209A1
    • 2013-04-11
    • US13687090
    • 2012-11-28
    • Intersil Americas LLC
    • CONGZHONG HUANGSICHENG CHENXUELIN WU
    • G05F1/46
    • G05F1/46H02M1/15H02M1/32H02M3/1582
    • A DC-DC voltage converter has a pair of switching transistors to provide an output voltage and are alternately switched in a boost mode of operation responsive to control signals. An inductor is connected to the pair of switching transistor and has an inductor current flowing there through. A current sensor monitors an input current and generates a current sense signal responsive thereto. Control circuitry generates the control signals to the second pair of switching transistors responsive to the current sense signal, the output voltage and a current limit signal, wherein when the current limit signal indicates the inductor current exceeds a current limit the control signals configure the pair of switching transistors to decrease the inductor current.
    • DC-DC电压转换器具有一对开关晶体管以提供输出电压,并且响应于控制信号而在升压操作模式中交替切换。 电感器连接到该对开关晶体管,并且具有在其中流过的电感器电流。 电流传感器监测输入电流并响应于此产生电流检测信号。 响应于电流感测信号,输出电压和电流限制信号,控制电路产生对第二对开关晶体管的控制信号,其中当电流限制信号指示电感器电流超过电流限制时,控制信号配置一对 开关晶体管降低电感电流。