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公开(公告)号：US10338620B2
公开(公告)日：2019-07-02
申请号：US15814225
申请日：2017-11-15
发明人： Fabio Ballarin , Cristian Garbossa , Marco Piselli
摘要： In some examples, a device includes an amplifier circuit configured to receive a reference voltage signal at a first input, receive a feedback signal at a second input, and generate an output signal based on the reference voltage signal and the feedback signal. In some examples, the device also includes a feedback circuit including a soft-shaper circuit that is electrically connected to the second input of the amplifier circuit. In some examples, the feedback circuit is configured to sense a voltage step in the reference voltage signal, generate a voltage step across the soft-shaper circuit approximately equal to the voltage step in the reference voltage signal in response to sensing the voltage step in the reference voltage signal, and ramp a voltage level across the soft-shaper circuit to zero after generating the voltage step across the soft-shaper circuit.
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公开(公告)号：US09793809B1
公开(公告)日：2017-10-17
申请号：US15294188
申请日：2016-10-14
发明人： Michael Lenz , Cristian Garbossa , Marco Piselli
CPC分类号： H02M3/158 , H02H3/202 , H02H7/1213 , H02M1/32 , H02M2001/007
摘要： In one example, a circuit includes a first voltage converter and a second voltage converter. The first voltage converter is configured to convert a first voltage to a second voltage, determine whether the first voltage converter is operating in an unsafe state, and output an indication that the first voltage converter is operating in the unsafe state. The second voltage converter is configured to selectively activate a high side switch and a low side switch to convert the second voltage to a third voltage. In response to receiving the indication that the first voltage converter is operating in the unsafe state, the second voltage converter is further configured to activate the high side switch and the low side switch to establish an electrical path between the second voltage and a reference node of the circuit.
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公开(公告)号：US09519303B2
公开(公告)日：2016-12-13
申请号：US14176795
申请日：2014-02-10
发明人： Fabio Ballarin , Marco Piselli , Fabio Gini , Stefano Zampieri
CPC分类号： G05F3/262 , G05F3/222 , G05F3/265 , H02M3/1584
摘要： Example current tracking circuits and systems as well as methods for tracking current are described herein. In one example, a current tracking circuit comprises a current mirror that receives a power supply input and a control signal as inputs, wherein the current mirror has a mirror ratio. The current tracking circuit also comprises a programmability sub-circuit coupled to the current mirror that trims a value of the mirror ratio. In another example, a method comprises performing current mirroring using a current mirror comprising a sense device, wherein a mirror ratio of the current mirror is based on a programmable sub-circuit. The method further comprises maintaining, by a voltage regulation loop, a collector potential of the sense device within a threshold difference level of a collector potential of a power device coupled to the sense device, wherein the sense device mirrors a current flowing in the power device.
摘要翻译： 本文描述了电流跟踪电路和系统的示例以及跟踪电流的方法。 在一个示例中，电流跟踪电路包括接收电源输入和控制信号作为输入的电流镜，其中电流镜具有镜像比。 电流跟踪电路还包括耦合到电流镜的可编程子电路，其修整镜像比的值。 在另一示例中，一种方法包括使用包括感测装置的电流镜执行电流镜像，其中电流镜的镜像比基于可编程子电路。 该方法还包括通过电压调节回路将感测装置的集电极电位维持在耦合到感测装置的功率器件的集电极电位的阈值差水平之内，其中感测装置反射在功率装置中流动的电流 。
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公开(公告)号：US20150227157A1
公开(公告)日：2015-08-13
申请号：US14176795
申请日：2014-02-10
发明人： Fabio Ballarin , Marco Piselli , Fabio Gini , Stefano Zampieri
IPC分类号： G05F3/26
CPC分类号： G05F3/262 , G05F3/222 , G05F3/265 , H02M3/1584
摘要： Example current tracking circuits and systems as well as methods for tracking current are described herein. In one example, a current tracking circuit comprises a current mirror that receives a power supply input and a control signal as inputs, wherein the current mirror has a mirror ratio. The current tracking circuit also comprises a programmability sub-circuit coupled to the current mirror that trims a value of the mirror ratio. In another example, a method comprises performing current mirroring using a current mirror comprising a sense device, wherein a mirror ratio of the current mirror is based on a programmable sub-circuit. The method further comprises maintaining, by a voltage regulation loop, a collector potential of the sense device within a threshold difference level of a collector potential of a power device coupled to the sense device, wherein the sense device mirrors a current flowing in the power device.
摘要翻译： 本文描述了电流跟踪电路和系统的示例以及跟踪电流的方法。 在一个示例中，电流跟踪电路包括接收电源输入和控制信号作为输入的电流镜，其中电流镜具有镜像比。 电流跟踪电路还包括耦合到电流镜的可编程子电路，其修整镜像比的值。 在另一示例中，一种方法包括使用包括感测装置的电流镜执行电流镜像，其中电流镜的镜像比基于可编程子电路。 该方法还包括通过电压调节回路将感测装置的集电极电位维持在耦合到感测装置的功率器件的集电极电位的阈值差水平之内，其中感测装置反射在功率装置中流动的电流 。
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公开(公告)号：US11181560B2
公开(公告)日：2021-11-23
申请号：US16413430
申请日：2019-05-15
发明人： Cristian Garbossa , Marco Piselli
IPC分类号： G01R19/165 , G01R31/28
摘要： A circuit for detecting failure of a device includes a plurality of monitoring modules. Each respective monitoring module of the plurality of monitoring modules is configured to generate a monitoring value at an output of the respective monitoring module based on a signal received at an input of the respective monitoring module. The circuit further includes a data selector module configured to couple, for each step of a switching cycle, the input of each of the plurality of monitoring modules to one of a plurality of function modules such that each of the plurality of monitoring modules generates the monitoring value for each of the plurality of function modules to generate monitoring information and evaluation logic configured to determine whether a failure has occurred at the plurality of function modules based on the monitoring information.
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公开(公告)号：US20190146532A1
公开(公告)日：2019-05-16
申请号：US15814225
申请日：2017-11-15
发明人： Fabio Ballarin , Cristian Garbossa , Marco Piselli
IPC分类号： G05F1/575 , H02P6/28 , G05F1/46 , G05F3/24 , H02M7/5387
CPC分类号： G05F1/575 , G05F1/461 , G05F1/462 , G05F1/468 , H02M2001/0025 , H05B33/0812 , H05B33/0815 , H05B33/0848 , H05B33/0872 , H05B33/0884
摘要： In some examples, a device includes an amplifier circuit configured to receive a reference voltage signal at a first input, receive a feedback signal at a second input, and generate an output signal based on the reference voltage signal and the feedback signal. In some examples, the device also includes a feedback circuit including a soft-shaper circuit that is electrically connected to the second input of the amplifier circuit. In some examples, the feedback circuit is configured to sense a voltage step in the reference voltage signal, generate a voltage step across the soft-shaper circuit approximately equal to the voltage step in the reference voltage signal in response to sensing the voltage step in the reference voltage signal, and ramp a voltage level across the soft-shaper circuit to zero after generating the voltage step across the soft-shaper circuit.
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公开(公告)号：US20170364111A1
公开(公告)日：2017-12-21
申请号：US15188855
申请日：2016-06-21
发明人： Marco Flaibani , Giovanni Bisson , Marco Piselli
摘要： A circuit comprising a series voltage regulator comprising a first semiconductor device coupled in series between a supply voltage and a voltage output, the series regulator operable to receive a voltage level from the supply voltage and to provide a regulated voltage level at the voltage output; and a parallel voltage regulator comprising a second semiconductor device coupled to the voltage output, the parallel voltage regulator operable to detect a variation in a voltage level provided at the voltage output, and to sink and/or source a current from/to the voltage output through the semiconductor device, an amount of current sunk and/or sourced adequate to offset the change in the voltage level at the voltage output.
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