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1. 发明授权

US10958162B1 Dual-loop regulated switched capacitor DC-DC converter 有权
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.
发明人： Sameh Assem Ibrahim , Mohammad Ahmed Radwan , Michael A Nix
IPC分类号： H02M3/07 , H02M3/156
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.

2. 发明申请

US20160161961A1 CIRCUIT TO IMPROVE LOAD TRANSIENT BEHAVIOR OF VOLTAGE REGULATORS AND LOAD SWITCHES 有权
标题翻译：电路改进负载电压稳压器和负载开关的瞬态特性
公开(公告)号：US20160161961A1
公开(公告)日：2016-06-09
申请号：US14959993
申请日：2015-12-04
申请人： Vidatronic, Inc.
发明人： Mohamed Ahmed Mohamed El-Nozahi , Faisal Abdellatif Elseddeek Ali Hussien , Mohamed Mostafa Saber Aboudina , Sameh Ahmed Assem Mostafa Ibrahim , Moises Emanuel Robinson
IPC分类号： G05F1/56
CPC分类号： G05F1/56
摘要： A method to adjust the load transient regulation of a low drop-out (LDO)/load switch linear voltage regulator (LVR) with an n-type pass element having an open loop transfer function, including determining during a load transient event if the gate of the pass—element goes lower than a scaled value of the output voltage or a constant voltage level, generating a control signal that controls a current sink block if the gate voltage of the pass element is lower than the output voltage, and enabling a current sink block that is controlled by the control signal and connecting the output of the current sink block to the output of the LVR.
摘要翻译：一种利用具有开环传递函数的n型通过元件来调整低压降（LDO）/负载开关线性稳压器（LVR）的负载瞬态调节的方法，包括在负载瞬变事件期间确定是否门的通过元件的输出电压低于输出电压的定标值或恒定电压电平，如果通过元件的栅极电压低于输出电压，则产生控制电流吸收块的控制信号，并使能电流接收器块由控制信号控制，并将当前接收器块的输出连接到LVR的输出。

3. 发明申请

US20160026199A1 LDO AND LOAD SWITCH SUPPORTING A WIDE RANGE OF LOAD CAPACITANCE 有权
标题翻译： LDO和负载开关支持宽范围的负载电容
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
CPC分类号： G05F1/575 , G05F1/565 , G05F1/573
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。

4. 发明授权

US08917070B2 LDO and load switch supporting a wide range of load capacitance 有权
标题翻译： LDO和负载开关支持宽范围的负载电容
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
IPC分类号： G05F1/565 , G05F1/575
CPC分类号： G05F1/575 , G05F1/565
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。

5. 发明申请

US20210286394A1 CURRENT REFERENCE CIRCUIT WITH CURRENT MIRROR DEVICES HAVING DYNAMIC BODY BIASING 有权
公开(公告)号：US20210286394A1
公开(公告)日：2021-09-16
申请号：US16819088
申请日：2020-03-14
申请人： Vidatronic, Inc.
发明人： Mohammad Ahmed RADWAN , Anand Veeravalli RAGHUPATHY , Michael A NIX
IPC分类号： G05F3/26 , G05F3/20
摘要： A current reference circuit with one or more current mirror devices having dynamic body biasing includes a voltage-to-current converter circuit having a feedback loop that includes an operational amplifier, an NMOS device, and a resistor to generate a reference current; a current mirror circuit, including one or more current mirror devices with source degeneration, to produce one or more output currents that are copies of the reference current; and a body-biasing stage including an active N-well to dynamically set a body-biasing voltage for the one or more current mirror devices.

6. 发明授权

US10771044B2 On-chip emulation of large resistors for integrating low frequency filters 有权
公开(公告)号：US10771044B2
公开(公告)日：2020-09-08
申请号：US15250760
申请日：2016-08-29
申请人： Vidatronic Inc.
发明人： Anand Veeravalli Raghupathy
IPC分类号： H03H19/00 , H03F3/45
摘要： A system for processing of signals with poles that are low in frequency includes a switched capacitor circuit that includes two switches connected to an input and an output of a switching capacitor (Cs), respectively, in an alternating manner at a selected switching frequency (fSW); and a filter capacitor connected between an input and the switched capacitor circuit. The filter capacitor and the switched capacitor circuit together function as a filter, thereby a pole frequency depending on a ratio of capacitance of the switching capacitor (Cs) and the filter capacitor, instead of an RC product.

7. 发明申请

US20180284829A1 VOLTAGE REGULATORS WITH IMPROVED POWER SUPPLY REJECTION USING NEGATIVE IMPEDANCE 审中-公开
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
IPC分类号： G05F1/63 , G05F1/70 , G05F3/06 , H02J3/18 , H02P9/30 , H02M3/337
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.

8. 发明申请

US20180113158A1 CIRCUIT AND METHOD FOR LOAD DETECTION USING SWITCHED CAPACITORS 审中-公开
公开(公告)号：US20180113158A1
公开(公告)日：2018-04-26
申请号：US15650836
申请日：2017-07-14
申请人： Vidatronic Inc.
发明人： Sameh Ahmed Assem IBRAHIM , Faisal Abdellatif Elseddeek HUSSIEN , Mohamed Mostafa Saber ABOUDINA , Mohamed Ahmed Mohamed EL-NOZAHI
IPC分类号： G01R19/165 , G01R31/02 , H03K17/687
CPC分类号： G01R19/16504 , G01R19/16595 , G01R31/028 , H03K17/687
摘要： A load detection circuit includes a variable current source circuit having a first input connected to a power supply, a second input, and a first output connected to an output load; a switched capacitor circuit having a third input connected to an external voltage reference signal, a fourth input connected to the first output of the variable current source, a fifth input connected to ground, a sixth input, and a second output; a comparator having a seventh input connected to the second output of the switched capacitor circuit, an eighth input connected to the first output of the variable current source, and a third output; an edge detector having a ninth input connected to the third output of the comparator, and a fourth output; and a digital controller having a fifth output connected to the variable current source and a sixth output connected to the switched capacitor circuit.

9. 发明申请

US20180052481A1 METHOD FOR ULTRA-LOW-POWER AND HIGH-PRECISION REFERENCE GENERATION 审中-公开
公开(公告)号：US20180052481A1
公开(公告)日：2018-02-22
申请号：US15679634
申请日：2017-08-17
申请人： Vidatronic Inc.
发明人： Mohamed Mostafa Saber ABOUDINA , Moises Emanuel ROBINSON , Mohamed Ahmed Mohamed EL-NOZAHI , Faisal Abdelatif Elsedeek HUSSIEN , Sameh Sameh IBRAHIM
IPC分类号： G05F3/26 , G05F3/18 , G05F3/30
CPC分类号： G05F3/267 , G05F3/185 , G05F3/30 , H01L27/0277 , H02M2001/0025 , H03F3/3038 , H03F3/45183
摘要： A reference generation circuit includes a reference circuit and a local supply regulation circuit connected between an input supply and the reference circuit to supply a local regulated input to the reference circuit. The local supply regulation circuit comprises an error amplifier and a pass device, and wherein the error amplifier senses an output voltage of the pass device and an output voltage of the reference generation circuit to generate an output to control a gate terminal of the pass device. The error amplifier uses a feedback network to sense the output voltage of the pass device for comparison with the output voltage of the reference generation circuit to generate the output to control the pass

10. 发明申请

US20170063347A1 ON-CHIP EMULATION OF LARGE RESISTORS FOR INTEGRATING LOW FREQUENCY FILTERS 审中-公开
标题翻译：用于集成低频滤波器的大电阻的片上仿真
公开(公告)号：US20170063347A1
公开(公告)日：2017-03-02
申请号：US15250760
申请日：2016-08-29
申请人： Vidatronic Inc.
发明人： Anand VEERAVALLI RAGHUPATHY
IPC分类号： H03H19/00 , H03F3/45
CPC分类号： H03H19/004 , H03F3/45475 , H03F2200/261 , H03F2203/45528
摘要： A system for processing of signals with poles that are low in frequency includes a switched capacitor circuit that includes two switches connected to an input and an output of a switching capacitor (Cs), respectively, in an alternating manner at a selected switching frequency (fSW); and a filter capacitor connected between an input and the switched capacitor circuit. The filter capacitor and the switched capacitor circuit together function as a filter, thereby a pole frequency depending on a ratio of capacitance of the switching capacitor (Cs) and the filter capacitor, instead of an RC product.
摘要翻译：用于处理具有低频率的极的信号的系统包括开关电容器电路，其包括分别以选择的开关频率（fSW）交替地连接到开关电容器（Cs）的输入和输出的两个开关）; 以及连接在输入和开关电容电路之间的滤波电容器。滤波电容器和开关电容器电路一起用作滤波器，从而取决于开关电容器（Cs）和滤波电容器的电容的比率而不是RC积。

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