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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：US09627880B2
公开(公告)日：2017-04-18
申请号：US14194272
申请日：2014-02-28
发明人： Cristian Garbossa
CPC分类号： H02H3/20 , B60L1/00 , B60L3/0084 , B60L3/04 , H02H9/04
摘要： A system is described that includes a first portion including one or more components configured to implement one or more safety functions of an application. The system further includes, a second, different portion comprising one or more different components configured to activate a safety path in response to a detection of a voltage overstress in the first portion. The system further includes a third, different portion comprising one or more different components configured to electrically couple the first portion to the second portion and to prevent the voltage overstress from propagating from the first portion to the second portion.
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公开(公告)号：US11545887B2
公开(公告)日：2023-01-03
申请号：US17232619
申请日：2021-04-16
摘要： This disclosure describes a protection circuit configured to protect a power converter. The protection circuit may be configured to determine when the power converter is operating in a tristate mode, and upon determining that the power converter is operating in the tristate mode, to disable a supply to the power converter based on a comparison of a switch node voltage on a switch node of the power converter to a feedback node voltage on an output node of the power converter.
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公开(公告)号：US20220345024A1
公开(公告)日：2022-10-27
申请号：US17241669
申请日：2021-04-27
发明人： Luca Scandola , Cristian Garbossa
摘要： A circuit may be configured detect current in different phases of an N-phase power converter. The circuit may comprise a first set of elements defining at least part of a first current loop associated with a first phase of the power converter, wherein the first set of elements is configured to detect current during the first phase of the power converter. In addition, the circuit may comprise a second set of elements defining at least part of a second current loop associated with a second phase of the power converter, wherein the second set of elements is configured to detect current during the second phase of the power converter when a duty cycle associated with the different phases is greater than 100/N, and wherein the first set of elements is configured to detect current during the second phase of the power converter when the duty cycle is less than 100/N.
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公开(公告)号：US20220337149A1
公开(公告)日：2022-10-20
申请号：US17232619
申请日：2021-04-16
摘要： This disclosure describes a protection circuit configured to protect a power converter. The protection circuit may be configured to determine when the power converter is operating in a tristate mode, and upon determining that the power converter is operating in the tristate mode, to disable a supply to the power converter based on a comparison of a switch node voltage on a switch node of the power converter to a feedback node voltage on an output node of the power converter.
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公开(公告)号：US10784780B1
公开(公告)日：2020-09-22
申请号：US16593881
申请日：2019-10-04
摘要： A controller circuit for generating a Pulse-Width Modulation (PWM) signal for activating a switching device of a Switched-Mode Power Supply (SMPS) includes gap detection circuitry, Pulse Frequency Modulated (PFM) circuitry, PWM circuitry and logic circuitry. The gap detection circuitry is configured to generate a shift signal based on an indication of a voltage difference between a reference voltage and a feedback voltage corresponding to voltage output by the SMPS. The PFM circuitry is configured to generate a hold signal indicating a target PFM frequency for the PWM signal. The PWM circuitry is configured to shift, based on the shift signal, a pedestal current to generate a shifted pedestal current and to generate, based on the shifted pedestal current, a peak signal indicating a target PWM on time for the PWM signal.
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公开(公告)号：US10734798B2
公开(公告)日：2020-08-04
申请号：US15984212
申请日：2018-05-18
IPC分类号： G01R19/165 , H02H1/00 , G05F3/08 , H02H3/20
摘要： A circuit includes a first regulation module, second regulation module, first monitoring module, and second monitoring module. The first regulation module is configured to generate, from a supply voltage, a first voltage. The second regulation module is configured to generate, from a first voltage, a second voltage that is less than the first voltage. The first monitoring module is configured to generate a first warning signal when the first voltage exceeds a first threshold and to generate the first warning signal when a first testing voltage exceeds the first threshold. The second monitoring module is configured to generate a second warning signal when the second voltage exceeds a second threshold and to generate the second warning signal when a second testing voltage exceeds the second threshold.
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公开(公告)号：US11493982B2
公开(公告)日：2022-11-08
申请号：US17152862
申请日：2021-01-20
IPC分类号： G06F1/3234 , G06F1/3206
摘要： Systems, methods, and circuitries are provided for controlling a microcontroller (MCU) on a per-application basis. A control system includes a microcontroller unit (MCU) including a first application group and a second application group. The first application group includes at least one hardware component not associated with the second application group. The control system includes a power management integrated circuit (PMIC). The PMIC includes monitoring circuitry configured to monitor the first application group to detect a first application group fault condition and monitor the second application group to detect a second application group fault condition. Based on the monitoring, the PMIC provides a first reset signal to the first application group that does not reset the second application group or provides a second reset signal to the second application group that does not reset the first application group.
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公开(公告)号：US20220345039A1
公开(公告)日：2022-10-27
申请号：US17241556
申请日：2021-04-27
发明人： Cristian Garbossa , Alberto Arpino , Michele Bergo , Dario Cappuzzo , Bogdan Dimitriu , Vlad Alexandru Mircea Ionescu , Paola Lops , Luca Scandola , Ozan Serpedin , Silvia Solda
摘要： In some examples, a device includes a selector circuit configured to deliver power to a first driver circuit, where the first driver circuit is configured to activate and deactivate a first switch of a postregulator. The device also includes a startup regulator and a controller configured to cause the selector circuit to deliver power from the startup regulator to the first driver circuit. The controller is also configured to determine that a boost regulator is operational after delivering power from the startup regulator to the first driver circuit. The controller is further configured to cause the selector circuit to deliver power from the boost regulator to the first driver circuit in response to determining that the boost regulator is operational.
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