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公开(公告)号：US20180284829A1
公开(公告)日：2018-10-04
申请号：US15477586
申请日：2017-04-03
申请人： Vidatronic, Inc.
发明人： Faisal Abdellatif Elseddeek HUSSIEN , Sameh Assem Ibrahim , Mohamed Mostafa Saber ABOUDINA , Michael Arn NIX , Moises Emanuel ROBINSON
摘要： An adaptive negative impedance system for improving power supply rejection (PSR) of a voltage regulator (VR) includes a variable negative impedance circuit with a control input; and a signal adjustment block (SAB), wherein a negative impedance value of the variable negative impedance circuit is dependent on a voltage regulator output current, and wherein the variable negative impedance circuit is a variable negative capacitance circuit and/or a variable negative resistance circuit, and the negative impedance value is a negative capacitance value and/or a negative resistance value.
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公开(公告)号：US20140266104A1
公开(公告)日：2014-09-18
申请号：US13830478
申请日：2013-03-14
申请人： VIDATRONIC, INC.
发明人： Mohamed Ahmed Mohamed El-Nozahi , Mohamed Mostafa Saber Aboudina , Sameh Assem Ibrahim , Faisal Abdellatif Elseddeek Ali Hussien , Moises Emanuel Robinson
摘要： A method to maintain stability of a low drop-out (LDO)/load switch linear voltage regulator (LVR). The method includes determining, during a power-up phase and by a capacitance sensing circuit, an estimated output capacitance value at an output node of the LDO/load switch LVR, and adjusting, based on the estimated output capacitance value, an adaptive RC network in the LDO/load switch LVR, wherein the adaptive RC network produces an adaptive zero in a feedback network transfer function of the LDO/load switch LVR, wherein the adaptive zero reduces an effect of a non-dominant pole in the open loop transfer function of the LDO/load switch LVR, and wherein a frequency of the adaptive zero is inversely proportional to the estimated output capacitance value.
摘要翻译： 一种保持低压降（LDO）/负载开关线性稳压器（LVR）稳定性的方法。 该方法包括在上电阶段和电容检测电路期间确定LDO /负载开关LVR的输出节点处的估计输出电容值，并且基于所估计的输出电容值来调整自适应RC网络 在LDO /负载开关LVR中，其中自适应RC网络在LDO /负载开关LVR的反馈网络传递函数中产生自适应零，其中自适应零减少开环传递函数中的非主导极的影响 的LDO /负载开关LVR，并且其中自适应零的频率与估计的输出电容值成反比。
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公开(公告)号：US10958162B1
公开(公告)日：2021-03-23
申请号：US16732292
申请日：2019-12-31
申请人： Vidatronic, Inc.
摘要： A dual loop regulated switched-capacitor converter circuit includes a switched capacitor array that includes a plurality of switches and capacitors; a digital controller for controlling the switched capacitor array; a pulse modulator connected to the digital controller; a clock generator connected to the digital controller; a first comparator connected to the pulse modulator; and a feedback network connected to the first comparator.
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公开(公告)号：US20160026199A1
公开(公告)日：2016-01-28
申请号：US14776349
申请日：2014-03-14
申请人： Vidatronic, Inc.
发明人： Mohamed Ahmed Mohamed El-Nozahi , Mohamed Mostafa Saber Aboudina , Sameh Assem Ibrahim , Faisal Abdellatif Elseddeek Ali Hussien , Moises Emanuel Robinson
IPC分类号： G05F1/575
摘要： An architecture and method to maintain stability of a low drop-out (LDO)/load switch linear voltage regulator (LVR). The architecture method support optionally determining during a power-up phase and by using a load detection circuit, the estimated load parameters that represents at least one selected from a group consisting of: the load time constant and the load resistor at an output node of the LDO/load switch LVR, and adjusting, based on the estimated output load parameters, an adaptive RC network in the LDO/load switch LVR, wherein the adaptive RC network produces an adaptive zero in a feedback network transfer function of the LDO/load switch LVR, wherein the adaptive zero reduces an effect of a non-dominant pole in the open loop transfer function of the LDO/load switch LVR, and wherein a frequency of the adaptive zero is adjusted based on the estimated load parameters.
摘要翻译： 保持低压降（LDO）/负载开关线性稳压器（LVR）稳定性的架构和方法。 架构方法支持可选地在上电阶段期间确定并且通过使用负载检测电路，所估计的负载参数表示从以下组中选择的至少一个：加载时间常数和负载电阻在输出节点 LDO /负载开关LVR，并且基于估计的输出负载参数来调整LDO /负载开关LVR中的自适应RC网络，其中自适应RC网络在LDO /负载开关的反馈网络传递函数中产生自适应零点 LVR，其中自适应零减少LDO /负载开关LVR的开环传递函数中的非主导极的影响，并且其中基于所估计的负载参数来调整自适应零点的频率。
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公开(公告)号：US08917070B2
公开(公告)日：2014-12-23
申请号：US13830478
申请日：2013-03-14
申请人： Vidatronic, Inc.
发明人： Mohamed Ahmed Mohamed El-Nozahi , Mohamed Mostafa Saber Aboudina , Sameh Assem Ibrahim , Faisal Abdellatif Elseddeek Ali Hussien , Moises Emanuel Robinson
摘要： A method to maintain stability of a low drop-out (LDO)/load switch linear voltage regulator (LVR). The method includes determining, during a power-up phase and by a capacitance sensing circuit, an estimated output capacitance value at an output node of the LDO/load switch LVR, and adjusting, based on the estimated output capacitance value, an adaptive RC network in the LDO/load switch LVR, wherein the adaptive RC network produces an adaptive zero in a feedback network transfer function of the LDO/load switch LVR, wherein the adaptive zero reduces an effect of a non-dominant pole in the open loop transfer function of the LDO/load switch LVR, and wherein a frequency of the adaptive zero is inversely proportional to the estimated output capacitance value.
摘要翻译： 一种保持低压降（LDO）/负载开关线性稳压器（LVR）稳定性的方法。 该方法包括在上电阶段和电容检测电路期间确定LDO /负载开关LVR的输出节点处的估计输出电容值，并且基于所估计的输出电容值来调整自适应RC网络 在LDO /负载开关LVR中，其中自适应RC网络在LDO /负载开关LVR的反馈网络传递函数中产生自适应零，其中自适应零减少开环传递函数中的非主导极的影响 的LDO /负载开关LVR，并且其中自适应零的频率与估计的输出电容值成反比。
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公开(公告)号：US10671109B2
公开(公告)日：2020-06-02
申请号：US16020983
申请日：2018-06-27
申请人： Vidatronic Inc.
发明人： Sameh Assem Ibrahim , Anand Veeravalli Raghupathy , Mostafa Mohamed Hesham Kamel Toubar , Moises Emanuel Robinson
摘要： A bandgap reference circuit includes a circuit for high-order temperature curvature compensation; and a circuit for low output impedance and current drive capability, wherein an output voltage of the bandgap reference circuit can be independently adjusted to be either above or below a silicon bandgap voltage without impacting temperature curvature.
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公开(公告)号：US09710003B2
公开(公告)日：2017-07-18
申请号：US14776349
申请日：2014-03-14
申请人： Vidatronic, Inc.
发明人： Mohamed Ahmed Mohamed El-Nozahi , Mohamed Mostafa Saber Aboudina , Sameh Assem Ibrahim , Faisal Abdellatif Elseddeek Ali Hussien , Moises Emanuel Robinson
摘要： An architecture and method to maintain stability of a low drop-out (LDO)/load switch linear voltage regulator (LVR). The architecture method support optionally determining during a power-up phase and by using a load detection circuit, the estimated load parameters that represents at least one selected from a group consisting of: the load time constant and the load resistor at an output node of the LDO/load switch LVR, and adjusting, based on the estimated output load parameters, an adaptive RC network in the LDO/load switch LVR, wherein the adaptive RC network produces an adaptive zero in a feedback network transfer function of the LDO/load switch LVR, wherein the adaptive zero reduces an effect of a non-dominant pole in the open loop transfer function of the LDO/load switch LVR, and wherein a frequency of the adaptive zero is adjusted based on the estimated load parameters.
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公开(公告)号：US20140266106A1
公开(公告)日：2014-09-18
申请号：US13916252
申请日：2013-06-12
申请人： Vidatronic, Inc.
发明人： Mohamed Ahmed Mohamed El-Nozahi , Mohamed Mostafa Saber Aboudina , Sameh Assem Ibrahim , Faisal Abdellatif Elseddeek Ali Hussien , Moises Emanuel Robinson
IPC分类号： G05F1/575
摘要： A novel architecture and method to maintain stability of a low drop-out (LDO)/load switch linear voltage regulator (LVR). The architecture and method also support optionally determining, during a power-up phase and by a capacitance sensing circuit, an estimated output capacitance value at an output node of the LDO/load switch LVR, and adjusting, based on the estimated output capacitance value, an adaptive RC network in the LDO/load switch LVR, wherein the adaptive RC network produces an adaptive zero in a feedback network transfer function of the LDO/load switch LVR, wherein the adaptive zero reduces an effect of a non-dominant pole in the open loop transfer function of the LDO/load switch LVR, and wherein a frequency of the adaptive zero is inversely proportional to the estimated output capacitance value.
摘要翻译： 一种保持低压降（LDO）/负载开关线性稳压器（LVR）稳定性的新颖结构和方法。 该架构和方法还支持在上电阶段和电容检测电路中可选地确定LDO /负载开关LVR的输出节点处的估计输出电容值，并且基于估计的输出电容值， LDO /负载开关LVR中的自适应RC网络，其中自适应RC网络在LDO /负载开关LVR的反馈网络传递函数中产生自适应零，其中自适应零减少非主导极在 LDO /负载开关LVR的开环传递函数，并且其中自适应零点的频率与估计的输出电容值成反比。
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