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公开(公告)号：US08981857B2
公开(公告)日：2015-03-17
申请号：US13678117
申请日：2012-11-15
IPC分类号： H03K3/03 , H03K3/023 , G06F1/26 , G11C5/14 , G11C11/406 , H03K3/0231 , G06F1/08 , G06F1/32 , G04G3/04 , G04F3/06
CPC分类号： H03K3/023 , G04F3/06 , G04G3/04 , G06F1/08 , G06F1/26 , G06F1/3296 , G11C5/147 , G11C11/40626 , G11C2211/4065 , H03K3/0231 , Y02D10/172
摘要： A timer to provide pulses at a comparator output wherein a frequency of the pulses is dependent on temperature, wherein providing each pulse includes biasing a first input of the comparator at a voltage and operating a transistor in a subthreshold region of operation to change the voltage of the first input of a comparator at a rate dependent upon temperature. The output of the comparator changes state when the voltage of the first input crosses a voltage of a second input of the comparator.
摘要翻译： 一种在比较器输出端提供脉冲的定时器，其中所述脉冲的频率取决于温度，其中提供每个脉冲包括以一个电压偏置所述比较器的第一输入并操作亚阈值操作区域中的晶体管， 比较器的第一个输入，取决于温度。 当第一输入的电压与比较器的第二输入的电压相交时，比较器的输出改变状态。
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2.发明授权公开(公告)号：US09046570B2
公开(公告)日：2015-06-02
申请号：US13566363
申请日：2012-08-03
IPC分类号： G01R23/14 , G01R31/317
CPC分类号： G06F21/81 , G01R31/31719 , G06F1/14 , G06F1/28
摘要： A method and apparatus for limiting access to an integrated circuit (IC) upon detection of abnormal conditions is provided. At least one of abnormal voltage detection, abnormal temperature detection, and abnormal clock detection are provided with low power consumption. Both abnormally low and abnormally high parameter values (e.g. abnormally low or high voltage, temperature, or clock frequency) may be detected. Abnormal clock detection may also detect a stopped clock signal, including a clock signal stopped at a low logic level or at a high logic level. Furthermore, abnormal clock detection may detect an abnormal duty cycle of a clock signal. A sampled bandgap reference may be used to provide accurate voltage and current references while consuming a minimal amount of power. Upon detection of an abnormal parameter value, one or more tamper indications may be provided to initiate tampering countermeasures, such as limiting access to the IC.
摘要翻译： 提供了一种在检测到异常状况时限制对集成电路（IC）的访问的方法和装置。 以低功耗提供异常电压检测，异常温度检测和异常时钟检测中的至少一种。 可以检测异常低和异常高的参数值（例如异常低或高电压，温度或时钟频率）。 异常时钟检测还可以检测停止的时钟信号，包括以低逻辑电平或高逻辑电平停止的时钟信号。 此外，异常时钟检测可以检测时钟信号的异常占空比。 采样的带隙基准可用于提供精确的电压和电流参考，同时消耗最小的功率。 当检测到异常参数值时，可以提供一个或多个篡改指示以启动篡改对策，例如限制对IC的访问。
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3.发明申请公开(公告)号：US20120319735A1
公开(公告)日：2012-12-20
申请号：US13160979
申请日：2011-06-15
申请人： Miten H. Nagda , Dale J. McQuirk
发明人： Miten H. Nagda , Dale J. McQuirk
IPC分类号： H03K5/22
CPC分类号： G01R31/31703
摘要： A device includes a comparator, and a selection circuit coupled to the inputs of the comparator. The selection circuit receives reference voltages and a variable voltage. In a normal operation mode, the selection circuit provides the variable voltage and a selected reference voltage to the comparator and the comparator provides an indication based on the variable voltage. In a test mode, the selection circuit provides a first selected reference voltage and a second selected reference voltage to the comparator for determining a switching offset voltage of the comparator.
摘要翻译： 一种器件包括比较器，以及耦合到比较器的输入端的选择电路。 选择电路接收参考电压和可变电压。 在正常操作模式中，选择电路向比较器提供可变电压和选定的参考电压，并且比较器提供基于可变电压的指示。 在测试模式中，选择电路向比较器提供第一选择的参考电压和第二选择的参考电压，以确定比较器的开关偏移电压。
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公开(公告)号：US09703303B2
公开(公告)日：2017-07-11
申请号：US14261829
申请日：2014-04-25
摘要： A voltage regulation system includes a voltage regulator configured to output a control signal indicating whether a voltage based on output of the voltage regulator is lower than a specified value. A charge pump is configured to output a voltage and a charging current. A pump monitor is configured to receive the control signal and the output voltage of the charge pump, and activate the charge pump when the control signal indicates the voltage based on output of the voltage regulator is lower than a specified value and the output voltage of the charge pump is lower than a threshold value.
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5.发明授权Method and integrated circuit that provides tracking between multiple regulated voltages 有权在多个调节电压之间提供跟踪的方法和集成电路公开(公告)号：US08841892B2
公开(公告)日：2014-09-23
申请号：US13686901
申请日：2012-11-27
申请人： Miten H. Nagda , Dale J. McQuirk
发明人： Miten H. Nagda , Dale J. McQuirk
摘要： An IC provides tracking between multiple regulated voltages. The IC includes, a voltage reference circuit, a voltage multiplier circuit, and first and second voltage regulator circuits. The voltage reference circuit generates a first reference voltage. The first voltage regulator circuit generates, at a first terminal of a first output transistor, a first regulated voltage that is based on the first reference voltage. The voltage multiplier circuit generates a second reference voltage from an equivalent of the first reference voltage. The second voltage regulator circuit generates, at a first terminal of a second output transistor, a second regulated voltage that is based on the second reference voltage. At least one terminal of the second output transistor is capacitively coupled to the first terminal of the first output transistor.
摘要翻译： IC提供多个调节电压之间的跟踪。 IC包括电压基准电路，电压倍增器电路以及第一和第二电压调节器电路。 电压基准电路产生第一参考电压。 第一稳压电路在第一输出晶体管的第一端产生基于第一参考电压的第一调节电压。 电压倍增器电路从等效于第一参考电压产生第二参考电压。 第二稳压电路在第二输出晶体管的第一端产生基于第二参考电压的第二调节电压。 第二输出晶体管的至少一个端子电容耦合到第一输出晶体管的第一端子。
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6.发明授权公开(公告)号：US08624653B2
公开(公告)日：2014-01-07
申请号：US13160979
申请日：2011-06-15
申请人： Miten H. Nagda , Dale J. McQuirk
发明人： Miten H. Nagda , Dale J. McQuirk
IPC分类号： H03L5/00
CPC分类号： G01R31/31703
摘要： A device includes a comparator, and a selection circuit coupled to the inputs of the comparator. The selection circuit receives reference voltages and a variable voltage. In a normal operation mode, the selection circuit provides the variable voltage and a selected reference voltage to the comparator and the comparator provides an indication based on the variable voltage. In a test mode, the selection circuit provides a first selected reference voltage and a second selected reference voltage to the comparator for determining a switching offset voltage of the comparator.
摘要翻译： 一种器件包括比较器，以及耦合到比较器的输入端的选择电路。 选择电路接收参考电压和可变电压。 在正常操作模式中，选择电路向比较器提供可变电压和选定的参考电压，并且比较器提供基于可变电压的指示。 在测试模式中，选择电路向比较器提供第一选择的参考电压和第二选择的参考电压，以确定比较器的开关偏移电压。
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7.发明申请METHOD AND INTEGRATED CIRCUIT THAT PROVIDES TRACKING BETWEEN MULTIPLE REGULATED VOLTAGES 有权提供多个调节电压之间的跟踪的方法和集成电路公开(公告)号：US20140145691A1
公开(公告)日：2014-05-29
申请号：US13686901
申请日：2012-11-27
申请人： MITEN H. NAGDA , DALE J. MCQUIRK
发明人： MITEN H. NAGDA , DALE J. MCQUIRK
IPC分类号： G05F1/10
摘要： An IC provides tracking between multiple regulated voltages. The IC includes, a voltage reference circuit, a voltage multiplier circuit, and first and second voltage regulator circuits. The voltage reference circuit generates a first reference voltage. The first voltage regulator circuit generates, at a first terminal of a first output transistor, a first regulated voltage that is based on the first reference voltage. The voltage multiplier circuit generates a second reference voltage from an equivalent of the first reference voltage. The second voltage regulator circuit generates, at a first terminal of a second output transistor, a second regulated voltage that is based on the second reference voltage. At least one terminal of the second output transistor is capacitively coupled to the first terminal of the first output transistor.
摘要翻译： IC提供多个调节电压之间的跟踪。 IC包括电压基准电路，电压倍增器电路以及第一和第二电压调节器电路。 电压基准电路产生第一参考电压。 第一稳压电路在第一输出晶体管的第一端产生基于第一参考电压的第一调节电压。 电压倍增器电路从等效于第一参考电压产生第二参考电压。 第二稳压电路在第二输出晶体管的第一端产生基于第二参考电压的第二调节电压。 第二输出晶体管的至少一个端子电容耦合到第一输出晶体管的第一端子。
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8.发明申请公开(公告)号：US20150309518A1
公开(公告)日：2015-10-29
申请号：US14261829
申请日：2014-04-25
摘要： A voltage regulation system includes a voltage regulator configured to output a control signal indicating whether a voltage based on output of the voltage regulator is lower than a specified value. A charge pump is configured to output a voltage and a charging current. A pump monitor is configured to receive the control signal and the output voltage of the charge pump, and activate the charge pump when the control signal indicates the voltage based on output of the voltage regulator is lower than a specified value and the output voltage of the charge pump is lower than a threshold value.
摘要翻译： 电压调节系统包括电压调节器，其被配置为输出指示基于电压调节器的输出的电压是否低于指定值的控制信号。 电荷泵被配置为输出电压和充电电流。 泵监视器被配置为接收控制信号和电荷泵的输出电压，并且当控制信号指示基于电压调节器的输出的电压低于指定值时，激活电荷泵，并且输出电压 电荷泵低于阈值。
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公开(公告)号：US20140132240A1
公开(公告)日：2014-05-15
申请号：US13678117
申请日：2012-11-15
CPC分类号： H03K3/023 , G04F3/06 , G04G3/04 , G06F1/08 , G06F1/26 , G06F1/3296 , G11C5/147 , G11C11/40626 , G11C2211/4065 , H03K3/0231 , Y02D10/172
摘要： A timer to provide pulses at a comparator output wherein a frequency of the pulses is dependent on temperature, wherein providing each pulse includes biasing a first input of the comparator at a voltage and operating a transistor in a subthreshold region of operation to change the voltage of the first input of a comparator at a rate dependent upon temperature. The output of the comparator changes state when the voltage of the first input crosses a voltage of a second input of the comparator.
摘要翻译： 一种在比较器输出端提供脉冲的定时器，其中所述脉冲的频率取决于温度，其中提供每个脉冲包括以一个电压偏置所述比较器的第一输入并操作亚阈值操作区域中的晶体管， 比较器的第一个输入，取决于温度。 当第一输入的电压与比较器的第二输入的电压相交时，比较器的输出改变状态。
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10.发明申请公开(公告)号：US20140035560A1
公开(公告)日：2014-02-06
申请号：US13566363
申请日：2012-08-03
IPC分类号： G01R23/14
CPC分类号： G06F21/81 , G01R31/31719 , G06F1/14 , G06F1/28
摘要： A method and apparatus for limiting access to an integrated circuit (IC) upon detection of abnormal conditions is provided. At least one of abnormal voltage detection, abnormal temperature detection, and abnormal clock detection are provided with low power consumption. Both abnormally low and abnormally high parameter values (e.g. abnormally low or high voltage, temperature, or clock frequency) may be detected. Abnormal clock detection may also detect a stopped clock signal, including a clock signal stopped at a low logic level or at a high logic level. Furthermore, abnormal clock detection may detect an abnormal duty cycle of a clock signal. A sampled bandgap reference may be used to provide accurate voltage and current references while consuming a minimal amount of power. Upon detection of an abnormal parameter value, one or more tamper indications may be provided to initiate tampering countermeasures, such as limiting access to the IC.
摘要翻译： 提供了一种在检测到异常状况时限制对集成电路（IC）的访问的方法和装置。 以低功耗提供异常电压检测，异常温度检测和异常时钟检测中的至少一种。 可以检测异常低和异常高的参数值（例如异常低或高电压，温度或时钟频率）。 异常时钟检测还可以检测停止的时钟信号，包括以低逻辑电平或高逻辑电平停止的时钟信号。 此外，异常时钟检测可以检测时钟信号的异常占空比。 采样的带隙基准可用于提供精确的电压和电流参考，同时消耗最小的功率。 在检测到异常参数值时，可以提供一个或多个篡改指示以启动篡改对策，例如限制对IC的访问。
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