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公开(公告)号：US20220255448A1
公开(公告)日：2022-08-11
申请号：US17661094
申请日：2022-04-28
发明人： Alessandro ZAFARANA
摘要： A power converter with secondary side active clamp. At least one example is a method including: limiting a push-phase voltage excursion of a phase node on a secondary side of a power converter during a push phase of a primary side of the power converter, the limiting by extracting current from the phase node and storing the current on a clamp capacitor; limiting a pull-phase voltage excursion of the phase node on the secondary side of the power converter during a pull phase of the primary side of the power converter, the limiting by extracting current from the phase node and storing the current on a clamp capacitor; and utilizing the current stored on the clamp capacitor to drive a component on the secondary side.
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公开(公告)号：US20230223845A1
公开(公告)日：2023-07-13
申请号：US18179903
申请日：2023-03-07
发明人： Alessandro ZAFARANA
IPC分类号： H02M3/07
CPC分类号： H02M3/07
摘要： Multiphase power converter with CLC resonant circuit. One example is a method of operation a power converter, the method including: charging, during a first on-time, a first output inductor by way of a first switching-tank circuit defining a first switch node coupled to a first lead of a resonant inductor; creating, during the first on-time, a first current flow into the first switching-tank circuit through the resonant inductor; and then charging, during a second on-time, a second output inductor by way of a second switching-tank circuit defining a second switch node coupled to a second lead of the resonant inductor; and creating, during the second on-time, a second current flow into the second switching-tank circuit through the resonant inductor.
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公开(公告)号：US20220302828A1
公开(公告)日：2022-09-22
申请号：US17455341
申请日：2021-11-17
发明人： Alessandro ZAFARANA
IPC分类号： H02M3/07
摘要： Multiphase power converter with CLC resonant circuit. One example is a method of operation a power converter, the method including: charging, during a first on-time, a first output inductor by way of a first switching-tank circuit defining a first switch node coupled to a first lead of a resonant inductor; creating, during the first on-time, a first current flow into the first switching-tank circuit through the resonant inductor; and then charging, during a second on-time, a second output inductor by way of a second switching-tank circuit defining a second switch node coupled to a second lead of the resonant inductor; and creating, during the second on-time, a second current flow into the second switching-tank circuit through the resonant inductor.
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公开(公告)号：US20240204643A1
公开(公告)日：2024-06-20
申请号：US18068579
申请日：2022-12-20
CPC分类号： H02M1/0009 , H02M3/158
摘要： Current sensing in switching power converters. At least one example is a method comprising: discharging an inductor of a buck converter using a low-side FET during a discharge mode of a first cycle; providing, during the discharge mode, a signal indicative of instantaneous current to a voltage regulator, the signal indicative of instantaneous current proportional to current through the inductor during at least a portion of the discharge mode; charging the inductor using a high-side FET during a charge mode, the charge mode in a second cycle subsequent to the discharge mode; and providing, during the charge mode, an emulated signal to the voltage regulator, the emulated signal generated based on the current through the inductor in the discharge mode.
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公开(公告)号：US20240120840A1
公开(公告)日：2024-04-11
申请号：US17938397
申请日：2022-10-06
CPC分类号： H02M3/1586 , H02M1/0085 , H02M1/425
摘要： Systems for power conversion, and controllers and methods for operating a multiage power converter. The method includes determining a target body brake time period for setting a load current of the multistage power converter below a predetermined threshold. The method also includes activating a body brake condition for the multistage power converter. The method further includes turning off each stage in the multistage power converter when the body brake condition is active. The method also includes deactivating the body brake condition after the target body brake time period following an activation of the body brake condition.
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公开(公告)号：US20220077778A1
公开(公告)日：2022-03-10
申请号：US17248513
申请日：2021-01-28
发明人： Alessandro ZAFARANA
摘要： Quasi-Constant On-Time Controller. At least one example embodiment is a method of operating a power converter, comprising: charging an inductor of a switching power converter, each charging has an on-time; and then discharging the inductor while providing current to the load; and repeating the charging and the discharging at a switching frequency. During the repeating, the example method may comprise: adjusting the switching frequency proportional to a voltage difference between an output voltage and a setpoint voltage; generating an on-time reference proportional to a frequency difference between the switching frequency and a setpoint frequency, the on-time of each charging of the inductor is based on the on-time reference; and modifying the on-time proportional to the voltage difference.
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公开(公告)号：US20230194625A1
公开(公告)日：2023-06-22
申请号：US17804709
申请日：2022-05-31
IPC分类号： G01R31/40 , H02M7/217 , G01R19/165
CPC分类号： G01R31/40 , H02M7/217 , G01R19/165
摘要： Multiphase trans-inductor voltage regulator fault diagnostic. One example is a method of detecting electrical faults in a multiphase power converter, the method comprising: driving, by a controller of the multiphase power converter, a first phase of the power converter, the first phase comprising a phase-one transformer module; driving, by the controller, a second phase of the power converter, the second phase comprising a phase-two transformer module distinct from the phase-one transformer module; testing, by the controller of the multiphase power converter, for a phase-one electrical fault associated with the phase-one transformer module; testing, by the controller, for a phase-two electrical fault associated with the phase-two transformer module; and driving, by the controller, a fault indicator in the presence of a phase-one or phase-two electrical fault.
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公开(公告)号：US20230063009A1
公开(公告)日：2023-03-02
申请号：US18045302
申请日：2022-10-10
发明人： Alessandro ZAFARANA
摘要： Quasi-Constant On-Time Controller. At least one example embodiment is a method of operating a power converter, comprising: charging an inductor of a switching power converter, each charging has an on-time; and then discharging the inductor while providing current to the load; and repeating the charging and the discharging at a switching frequency. During the repeating, the example method may comprise: adjusting the switching frequency proportional to a voltage difference between an output voltage and a setpoint voltage; generating an on-time reference proportional to a frequency difference between the switching frequency and a setpoint frequency, the on-time of each charging of the inductor is based on the on-time reference; and modifying the on-time proportional to the voltage difference.
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