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1. 发明申请

US20150323570A1 Input Current Compensation during Current Measurement 有权
标题翻译：电流测量时的输入电流补偿
公开(公告)号：US20150323570A1
公开(公告)日：2015-11-12
申请号：US14598720
申请日：2015-01-16
申请人： INTERSIL AMERICAS LLC
发明人： Travis J. Guthrie , James R. Toker , Narendra B. Kayathi , Brannon C. Harris
IPC分类号： G01R19/00
CPC分类号： G01R19/0038 , G01R19/0023 , G01R19/0092 , G01R19/25 , G01R19/2506 , G01R31/40 , H02M3/157 , H02M3/1584 , H02M2001/0009 , H03L5/00
摘要： A current measurement circuit may include unbuffered inputs, and the current may be sampled directly from the input pins. The input current created from each sample may be cancelled by injecting opposite charge on the subsequent sample. This direct sampling from the pins increases the common mode input range of the sense path without having to build high linearity rail-to-rail input buffers, hence lowering cost and power consumption of the current measurement path. It also allows for high-impedance input sampling. The measurement circuit may include multiple sampling stages, with a first sampling stage implemented as a switched-capacitor based circuit. A compensator circuit coupled in a feedback loop from the output of the first sampling stage to the input pins may be operated to provide the equivalent charge back to the input pins every cycle to cancel the input current required to charge the sampling capacitors of the first sampling stage.
摘要翻译：电流测量电路可以包括无缓冲输入，并且可以从输入引脚直接采样电流。从每个样品产生的输入电流可以通过在后续样品上注入相反的电荷来消除。从引脚的这种直接采样增加了感测路径的共模输入范围，而不必构建高线性轨至轨输入缓冲器，因此降低了当前测量路径的成本和功耗。它还允许高阻抗输入采样。测量电路可以包括多个采样级，第一采样级被实现为基于开关电容器的电路。耦合在从第一采样级的输出到输入引脚的反馈回路中的补偿电路可以被操作，以将每个周期的等效电荷提供给输入引脚，以消除对第一采样的采样电容器充电所需的输入电流阶段。

2. 发明申请

US20150326228A1 Current Synthesizer Correction 有权
标题翻译：当前合成器校正
公开(公告)号：US20150326228A1
公开(公告)日：2015-11-12
申请号：US14598418
申请日：2015-01-16
申请人： INTERSIL AMERICAS LLC
发明人： Travis J. Guthrie , James R. Toker , Narendra B. Kayathi , Brannon C. Harris
IPC分类号： H03L5/00
CPC分类号： G01R19/0038 , G01R19/0023 , G01R19/0092 , G01R19/25 , G01R19/2506 , G01R31/40 , H02M3/157 , H02M3/1584 , H02M2001/0009 , H03L5/00
摘要： An adjustable current-synthesizer may generate synthesized current representative of an actual current, according to a model of a circuit that produces the actual current. The current synthesizer may under-sample a current sense signal derived from the actual current to obtain a few samples of the actual current, which are then used to adjust the synthesized current, thereby ensuring accuracy of the synthesized current. Sample values of the actual current are compared with corresponding generated values of the synthesized current to obtain offset values. In order to maintain monotonicity in the synthesizer results, the offset values are used to make adjustments to the slope of the synthesized current. The slope of the synthesized current may also be adjusted according to the slope of the actual current. Sub-Nyquist sampling of the actual current may be performed on the down-slope, with up-slope adjustments made based on the offset adjustment and down-slope adjustment.
摘要翻译：根据产生实际电流的电路的模型，可调电流合成器可产生代表实际电流的合成电流。电流合成器可能会对从实际电流得到的电流检测信号进行欠采样，以获得实际电流的几个样本，然后将其用于调整合成电流，从而确保合成电流的精度。将实际电流的采样值与合成电流的相应生成值进行比较，以获得偏移值。为了在合成器结果中保持单调性，使用偏移值来对合成电流的斜率进行调整。合成电流的斜率也可以根据实际电流的斜率进行调整。实际电流的次奈奎斯特采样可以在下坡上进行，其基于偏移调整和下坡调整进行上坡调整。

3. 发明授权

US09667260B2 Current synthesizer correction 有权
公开(公告)号：US09667260B2
公开(公告)日：2017-05-30
申请号：US15237471
申请日：2016-08-15
申请人： Intersil Americas LLC
发明人： Travis J. Guthrie , James R. Toker , Narendra B. Kayathi , Brannon C. Harris
IPC分类号： G01R19/00 , H03L5/00 , G01R19/25 , H02M3/157 , H02M3/158 , H02M1/00
CPC分类号： G01R19/0038 , G01R19/0023 , G01R19/0092 , G01R19/25 , G01R19/2506 , G01R31/40 , H02M3/157 , H02M3/1584 , H02M2001/0009 , H03L5/00
摘要： An adjustable current-synthesizer may generate synthesized current representative of an actual current, according to a model of a circuit that produces the actual current. The current synthesizer may under-sample a current sense signal derived from the actual current to obtain a few samples of the actual current, which are then used to adjust the synthesized current, thereby ensuring accuracy of the synthesized current. Sample values of the actual current are compared with corresponding generated values of the synthesized current to obtain offset values. In order to maintain monotonicity in the synthesizer results, the offset values are used to make adjustments to the slope of the synthesized current. The slope of the synthesized current may also be adjusted according to the slope of the actual current. Sub-Nyquist sampling of the actual current may be performed on the down-slope, with up-slope adjustments made based on the offset adjustment and down-slope adjustment.

4. 发明授权

US09977057B2 Input current compensation during current measurement 有权
公开(公告)号：US09977057B2
公开(公告)日：2018-05-22
申请号：US14598720
申请日：2015-01-16
申请人： INTERSIL AMERICAS LLC
发明人： Travis J. Guthrie , James R. Toker , Narendra B. Kayathi , Brannon C. Harris
IPC分类号： G01R19/00 , H03L5/00 , G01R19/25 , H02M3/157 , H02M3/158 , H02M1/00 , G01R31/40
CPC分类号： G01R19/0038 , G01R19/0023 , G01R19/0092 , G01R19/25 , G01R19/2506 , G01R31/40 , H02M3/157 , H02M3/1584 , H02M2001/0009 , H03L5/00
摘要： A current measurement circuit may include unbuffered inputs, and the current may be sampled directly from the input pins. The input current created from each sample may be cancelled by injecting opposite charge on the subsequent sample. This direct sampling from the pins increases the common mode input range of the sense path without having to build high linearity rail-to-rail input buffers, hence lowering cost and power consumption of the current measurement path. It also allows for high-impedance input sampling. The measurement circuit may include multiple sampling stages, with a first sampling stage implemented as a switched-capacitor based circuit. A compensator circuit coupled in a feedback loop from the output of the first sampling stage to the input pins may be operated to provide the equivalent charge back to the input pins every cycle to cancel the input current required to charge the sampling capacitors of the first sampling stage.

5. 发明授权

US09419627B2 Current synthesizer correction 有权
标题翻译：电流合成器校正
公开(公告)号：US09419627B2
公开(公告)日：2016-08-16
申请号：US14598418
申请日：2015-01-16
申请人： INTERSIL AMERICAS LLC
发明人： Travis J. Guthrie , James R. Toker , Narendra B. Kayathi , Brannon C. Harris
IPC分类号： H03L5/00 , G01R19/00 , G01R19/25 , H02M3/157 , H02M3/158 , H02M1/00
CPC分类号： G01R19/0038 , G01R19/0023 , G01R19/0092 , G01R19/25 , G01R19/2506 , G01R31/40 , H02M3/157 , H02M3/1584 , H02M2001/0009 , H03L5/00
摘要： An adjustable current-synthesizer may generate synthesized current representative of an actual current, according to a model of a circuit that produces the actual current. The current synthesizer may under-sample a current sense signal derived from the actual current to obtain a few samples of the actual current, which are then used to adjust the synthesized current, thereby ensuring accuracy of the synthesized current. Sample values of the actual current are compared with corresponding generated values of the synthesized current to obtain offset values. In order to maintain monotonicity in the synthesizer results, the offset values are used to make adjustments to the slope of the synthesized current. The slope of the synthesized current may also be adjusted according to the slope of the actual current. Sub-Nyquist sampling of the actual current may be performed on the down-slope, with up-slope adjustments made based on the offset adjustment and down-slope adjustment.
摘要翻译：根据产生实际电流的电路的模型，可调电流合成器可产生代表实际电流的合成电流。电流合成器可能会对从实际电流得到的电流检测信号进行欠采样，以获得实际电流的几个样本，然后将其用于调整合成电流，从而确保合成电流的精度。将实际电流的采样值与合成电流的相应生成值进行比较，以获得偏移值。为了在合成器结果中保持单调性，使用偏移值来对合成电流的斜率进行调整。合成电流的斜率也可以根据实际电流的斜率进行调整。实际电流的次奈奎斯特采样可以在下坡上进行，其基于偏移调整和下坡调整进行上坡调整。

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