Programmable fuse state determination system and method
    1.
    发明授权
    Programmable fuse state determination system and method 有权
    可编程保险丝状态确定系统和方法

    公开(公告)号:US07030641B1

    公开(公告)日:2006-04-18

    申请号:US10943370

    申请日:2004-09-17

    IPC分类号: G01R31/26

    摘要: A programmable fuse state determination system and method provide a fuse current through a programmed fuse which produces a voltage that varies with the fuse's resistance. The voltage is compared with a threshold voltage to indicate whether the fuse is blown or intact. The invention employs ‘normal’ and ‘test’ modes, in which the relationship between the fuse's resistance and the threshold voltage differ, such that a higher fuse resistance is required for the fuse to be determined blown in the ‘test’ mode than in the ‘normal’ mode.

    摘要翻译: 可编程保险丝状态确定系统和方法通过编程保险丝提供熔丝电流,其产生随保险丝电阻而变化的电压。 将电压与阈值电压进行比较,以指示保险丝是否熔断或完好无损。 本发明采用“正常”和“测试”模式,其中保险丝的电阻和阈值电压之间的关系不同,使得在“测试”模式下确定熔断器需要更高的熔断电阻,而不是 '正常模式。

    Dynamically read fuse cell
    2.
    发明授权
    Dynamically read fuse cell 有权
    动态读保险丝盒

    公开(公告)号:US07327595B2

    公开(公告)日:2008-02-05

    申请号:US11431207

    申请日:2006-05-09

    IPC分类号: G11C17/18

    CPC分类号: G11C17/16 G11C17/18

    摘要: A dynamically read fuse cell includes a first circuit which includes a known reference resistance Rref, and a second circuit which includes a programmed fuse having a resistance Rfuse; the state of the programmed fuse is to be read. The first and second circuits receive a common “read” signal, and are arranged to produce first and second outputs which begin changing state in response; the first and second outputs have respective slew rates which vary with Rref and Rfuse, respectively. The first and second circuits are interconnected such that causing both outputs to begin changing state in response to the “read” signal triggers a time domain race condition, the result of which indicates which of the outputs slewed more quickly in response to the “read” signal, thereby indicating the relationship between Rref and Rfuse and, when Rref is properly chosen, the state of the fuse.

    摘要翻译: 动态读取熔丝单元包括包括已知参考电阻R REF的第一电路和包括具有电阻R保险丝的编程保险丝的第二电路; 编程保险丝的状态将被读取。 第一和第二电路接收公共的“读取”信号,并且被布置成产生开始响应的状态的第一和第二输出; 第一和第二输出具有相应的转换速率,其分别随R< ref>和<<<<>< 第一和第二电路互连,使得响应于“读取”信号使两个输出开始改变状态触发时域竞争条件,其结果指示响应于“读取”而更快地输出哪个输出, 信号,从而指示R< REF>和<<<<<<<<< SUB< / SUB>之间的关系,并且当适当地选择R ref时,保险丝的状态。

    Dynamically read fuse cell
    3.
    发明申请
    Dynamically read fuse cell 有权
    动态读保险丝盒

    公开(公告)号:US20070274118A1

    公开(公告)日:2007-11-29

    申请号:US11431207

    申请日:2006-05-09

    IPC分类号: G11C17/00

    CPC分类号: G11C17/16 G11C17/18

    摘要: A dynamically read fuse cell comprises a first circuit which includes a known reference resistance Rref, and a second circuit which includes a programmed fuse having a resistance Rfuse; the state of the programmed fuse is to be read. The first and second circuits receive a common “read” signal, and are arranged to produce first and second outputs which begin changing state in response; the first and second outputs have respective slew rates which vary with Rref and Rfuse, respectively. The first and second circuits are interconnected such that causing both outputs to begin changing state in response to the “read” signal triggers a time domain race condition, the result of which indicates which of the outputs slewed more quickly in response to the “read” signal, thereby indicating the relationship between Rref and Rfuse and, when Rref is properly chosen, the state of the fuse.

    摘要翻译: 动态读取熔丝单元包括包括已知参考电阻R REF的第一电路和包括具有电阻R保险丝的编程保险丝的第二电路; 编程保险丝的状态将被读取。 第一和第二电路接收公共的“读取”信号,并且被布置成产生开始响应的状态的第一和第二输出; 第一和第二输出具有相应的转换速率,其分别随R< ref>和<<<<>< 第一和第二电路互连,使得响应于“读取”信号使两个输出开始改变状态触发时域竞争条件,其结果指示响应于“读取”而更快地输出哪个输出, 信号,从而指示R< REF>和<<<<<<<<< SUB< / SUB>之间的关系,并且当适当地选择R ref时,保险丝的状态。

    Adaptive phase offset controller for multi-channel switching power converter
    5.
    发明授权
    Adaptive phase offset controller for multi-channel switching power converter 有权
    多通道开关电源转换器的自适应相位偏移控制器

    公开(公告)号:US08581440B2

    公开(公告)日:2013-11-12

    申请号:US12862974

    申请日:2010-08-25

    IPC分类号: H02J1/00

    摘要: An adaptive phase offset controller for use with a switching power converter having first and second channels. The controller includes a discriminator which detects a ‘critical condition’ in which a switching signal for the first channel transitions during a critical time interval so as to give rise to crosstalk that can corrupt the operation of the second channel's control circuit. When the discriminator detects a critical condition, a phase offset circuit offsets the phase of the first channel's switching signals, such that subsequent transitions occur outside of the critical time interval. A second discriminator and phase offset circuit are preferably employed to detect critical conditions which can give rise to crosstalk that can corrupt the operation of the first channel's control circuit.

    摘要翻译: 一种与具有第一和第二通道的开关功率转换器一起使用的自适应相位偏移控制器。 该控制器包括一个鉴别器,该鉴频器检测第一通道的切换信号在临界时间间隔内转变的“临界状态”,从而产生可能损坏第二通道控制电路的操作的串扰。 当鉴别器检测到临界条件时,相位偏移电路抵消第一通道的切换信号的相位,使得后续转换发生在临界时间间隔之外。 优选地使用第二鉴频器和相位偏移电路来检测可能引起可能破坏第一通道的控制电路的操作的串扰的关键条件。

    SWITCHING POWER CONVERTER WITH CONTROLLED STARTUP MECHANISM
    6.
    发明申请
    SWITCHING POWER CONVERTER WITH CONTROLLED STARTUP MECHANISM 有权
    用控制启动机制切换电源转换器

    公开(公告)号:US20090167200A1

    公开(公告)日:2009-07-02

    申请号:US11964242

    申请日:2007-12-26

    IPC分类号: H05B41/36 G05F1/10

    摘要: A switching power converter with a controlled startup mechanism includes a switching stage which provides a voltage Vout at an output node in response to a switching control signal, with the output node adapted for connection to a non-linear load. A feedback network compares a signal which varies with the current conducted by the load (Iload) with a reference signal, and provides the switching control signal so as to maintain Iload at a desired value. A capacitor connected to the output node provides a current Ic to the feedback network which varies with dVout/dt. The feedback network is arranged to limit dVout/dt in response to current Ic when Iload is substantially zero. In this way, large inrush currents or damage that might otherwise occur during startup are avoided.

    摘要翻译: 具有受控启动机构的开关电源转换器包括开关级,其响应于开关控制信号在输出节点处提供电压Vout,输出节点适于连接到非线性负载。 反馈网络将与负载(Iload)传导的电流变化的信号与参考信号进行比较,并提供开关控制信号,以将Iload保持在期望值。 连接到输出节点的电容器向反馈网络提供电流Ic,其随dVout / dt而变化。 反馈网络被布置成当Iload基本上为零时响应于当前Ic来限制dVout / dt。 以这种方式,避免了起动时可能发生的大的浪涌电流或损坏。

    ADAPTIVE PHASE OFFSET CONTROLLER FOR MULTI-CHANNEL SWITCHING POWER CONVERTER
    8.
    发明申请
    ADAPTIVE PHASE OFFSET CONTROLLER FOR MULTI-CHANNEL SWITCHING POWER CONVERTER 有权
    用于多通道开关电源转换器的自适应相位偏移控制器

    公开(公告)号:US20110049986A1

    公开(公告)日:2011-03-03

    申请号:US12862974

    申请日:2010-08-25

    IPC分类号: H02M3/156

    摘要: An adaptive phase offset controller for use with a switching power converter having first and second channels. The controller includes a discriminator which detects a ‘critical condition’ in which a switching signal for the first channel transitions during a critical time interval so as to give rise to crosstalk that can corrupt the operation of the second channel's control circuit. When the discriminator detects a critical condition, a phase offset circuit offsets the phase of the first channel's switching signals, such that subsequent transitions occur outside of the critical time interval. A second discriminator and phase offset circuit are preferably employed to detect critical conditions which can give rise to crosstalk that can corrupt the operation of the first channel's control circuit.

    摘要翻译: 一种与具有第一和第二通道的开关功率转换器一起使用的自适应相位偏移控制器。 该控制器包括一个鉴别器,该鉴频器检测第一通道的切换信号在临界时间间隔内转变的“临界状态”,从而产生可能损坏第二通道控制电路的操作的串扰。 当鉴别器检测到临界条件时,相位偏移电路抵消第一通道的切换信号的相位,使得后续转换发生在临界时间间隔之外。 优选地使用第二鉴频器和相位偏移电路来检测可能引起可能破坏第一通道的控制电路的操作的串扰的关键条件。

    Switching power converter with controlled startup mechanism
    9.
    发明授权
    Switching power converter with controlled startup mechanism 有权
    具有控制启动机制的开关电源转换器

    公开(公告)号:US07733030B2

    公开(公告)日:2010-06-08

    申请号:US11964242

    申请日:2007-12-26

    IPC分类号: H05B37/00

    摘要: A switching power converter with a controlled startup mechanism includes a switching stage which provides a voltage Vout at an output node in response to a switching control signal, with the output node adapted for connection to a non-linear load. A feedback network compares a signal which varies with the current conducted by the load (Iload) with a reference signal, and provides the switching control signal so as to maintain Iload at a desired value. A capacitor connected to the output node provides a current Ic to the feedback network which varies with dVout/dt. The feedback network is arranged to limit dVout/dt in response to current Ic when Iload is substantially zero. In this way, large inrush currents or damage that might otherwise occur during startup are avoided.

    摘要翻译: 具有受控启动机构的开关电源转换器包括开关级,其响应于开关控制信号在输出节点处提供电压Vout,输出节点适于连接到非线性负载。 反馈网络将与负载(Iload)传导的电流变化的信号与参考信号进行比较,并提供开关控制信号,以将Iload保持在期望值。 连接到输出节点的电容器向反馈网络提供电流Ic,其随dVout / dt而变化。 反馈网络被布置成当Iload基本上为零时响应于当前Ic来限制dVout / dt。 以这种方式,避免了起动时可能发生的大的浪涌电流或损坏。

    Resonant accelerometer with flexural lever leverage system
    10.
    发明授权
    Resonant accelerometer with flexural lever leverage system 失效
    具有弯曲杠杆系统的谐振加速度计

    公开(公告)号:US5969249A

    公开(公告)日:1999-10-19

    申请号:US073747

    申请日:1998-05-06

    摘要: An accelerometer comprises a proof mass, a first resonant tuning fork connected to the proof mass, a second resonant tuning fork connected to the proof mass, and a flexural lever leverage system supporting the proof mass above a substrate. The flexural lever leverage system enhances an acceleration force applied to the proof mass to cause a tensile force in the first resonant tuning fork which raises its resonant frequency, and a compressive force in the second resonant tuning fork which lowers its resonant frequency. The device may be fabricated using semiconductor-based surface-micromachining technology.

    摘要翻译: 加速度计包括检测质量块,连接到检验质量块的第一谐振音叉,连接到校验块的第二谐振音叉,以及支撑在衬底上方的校准块的弯曲杆杠杆系统。 弯曲杆杠杆系统增强了施加到检验质量块上的加速力,从而在第一共振音叉中引起拉力,从而提高其共振频率,并使第二共振音叉中的压缩力降低其谐振频率。 该器件可以使用基于半导体的表面微加工技术来制造。