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公开(公告)号：US11955895B2
公开(公告)日：2024-04-09
申请号：US17578353
申请日：2022-01-18
发明人： Yong Li , Cong Zheng , Xiaoyan Wang , Wenduo Liu
CPC分类号： H02M3/33523 , H02M1/32 , H02M1/36 , H02M3/33507 , H02M3/33592 , H02J7/00 , H02M1/0058 , Y02B70/10
摘要： A flyback converter control architecture is provided in which primary-only feedback techniques are used to ensure smooth startup and detection of fault conditions. During steady-state operation, secondary-side regulation is employed. In addition, current limits are monitored during steady-state operation using primary-only feedback techniques to obviate the need for a secondary-side current sense resistor.
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公开(公告)号：US11929665B2
公开(公告)日：2024-03-12
申请号：US18373590
申请日：2023-09-27
发明人： Ionel Jitaru
CPC分类号： H02M1/083 , H02M1/4258 , H02M3/155 , H02M3/335 , H02M3/33553 , H02M3/33592 , H01F38/42 , H02M1/0058 , H02M1/342 , Y02B70/10
摘要： A switching power conversion apparatus for converting power from an input voltage source to a load includes first and second switches connected to a switching node. An inductive element has a magnetizing current connected to the node, and the inductive element is connected to deliver energy via the first and second switches from the input voltage to the load during a succession of power conversion cycles. A capacitance connected to the node resonates with the inductive element to cause parasitic oscillation. A clamp subcircuit across the inductive element contains an auxiliary switch to trap energy and prevent parasitic oscillation, wherein the auxiliary switch is complementary to the first switch. A controlled voltage source injects energy in the inductive element, when the auxiliary switch turns off to discharge the parasitic capacitance by using trapped energy in the inductive element in addition to injected energy from the controlled voltage source.
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公开(公告)号：US11888392B2
公开(公告)日：2024-01-30
申请号：US16851197
申请日：2020-04-17
申请人： Wolfspeed, Inc.
发明人： Mrinal K. Das , Adam Barkley , Henry Lin , Marcelo Schupbach
IPC分类号： H02M3/155 , H02M3/00 , H01L25/07 , H01L23/373 , H01L29/16 , H05K3/30 , H02M1/44 , H02M1/00 , H02M1/34 , H02M1/08 , H02M7/00
CPC分类号： H02M3/155 , H01L23/3735 , H01L25/072 , H01L29/1608 , H02M3/003 , H05K3/303 , B60L2210/00 , H01L2224/0603 , H01L2224/4903 , H01L2224/49111 , H01L2224/49431 , H02M1/0054 , H02M1/08 , H02M1/348 , H02M1/44 , H02M7/003 , Y02B70/10
摘要： A power converter module includes an active metal braze (AMB) substrate, power converter circuitry, and a housing. The AMB substrate includes an aluminum nitride base layer, a first conductive layer on a first surface of the aluminum nitride base layer, and a second conductive layer on a second surface of the aluminum nitride base layer opposite the first surface. The power converter circuitry includes a number of silicon carbide switching components coupled to one another via the first conductive layer. The housing is over the power converter circuitry and the AMB substrate. By using an AMB substrate with an aluminum nitride base layer, the thermal dissipation characteristics of the power converter module may be substantially improved while maintaining the structural integrity of the power converter module.
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64.发明授权公开(公告)号：US11831243B2
公开(公告)日：2023-11-28
申请号：US17429358
申请日：2021-04-12
发明人： Yanbo Zou , Yulin Chen , Fada Du , Tao Zhang
CPC分类号： H02M3/33569 , H02M1/0009 , H02M3/33592 , H02M1/348 , H02M3/3353 , H02M3/33507 , Y02B70/10
摘要： The subject application provides a power converter with lossless current sensing capability. The power converter comprises: a transformer, a primary switch for conducting or blocking a current flowing in a primary winding of the transformer, a controller configured to generate a first control signal through a first control node to control the primary switch; and a current sensing circuit configured for sensing a current flowing in the primary winding. The current sensing circuit comprises a current sensing switch that is configured to be normally open and has a gate length smaller than a gate length of the primary switch. A relatively simple current sensing circuit is achieved and the overall power efficiency is improved.
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65.发明授权公开(公告)号：US11817254B2
公开(公告)日：2023-11-14
申请号：US17235733
申请日：2021-04-20
IPC分类号： H05K7/20 , H01F27/28 , H01F27/32 , H01F27/10 , H01F27/255 , H01F27/08 , H02M1/12 , H01F27/30 , H01F7/00 , H01F27/26 , H01F1/24 , H01G4/40 , H01G4/38 , H03H7/01
CPC分类号： H01F27/2895 , H01F7/00 , H01F27/085 , H01F27/10 , H01F27/255 , H01F27/266 , H01F27/2823 , H01F27/2876 , H01F27/306 , H01F27/324 , H02M1/126 , H01F1/24 , H01F27/08 , H01G4/38 , H01G4/40 , H02M1/123 , H03H7/01 , Y02B70/10
摘要： The invention comprises a harmonic filter apparatus and method of use thereof for magnetically isolating and filtering individual phases of three-phase power comprising a delta circuit that includes: (1) a first leg connecting to a second leg and a third leg and (2) first circuitry on the first leg matching second circuitry on the second leg, the first circuitry comprising at least two contactors electrically wired in parallel, the harmonic filter magnetically isolating individual phases of three-phase power, where inductor—coupled inductor pairs couple apexes of the delta circuit to individual phases of the three-phase power.
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公开(公告)号：US20230336089A1
公开(公告)日：2023-10-19
申请号：US18211318
申请日：2023-06-19
IPC分类号： H02M3/335
CPC分类号： H02M3/33592 , H02M3/33523 , Y02B70/10 , H02M1/0009
摘要： Disclosed examples include flyback converters, control circuits and methods to facilitate secondary side regulation of the output voltage. A primary side control circuit operates a primary side switch to independently initiate power transfer cycles to deliver power to a transformer secondary winding in a first mode. A secondary side control circuit operates a synchronous rectifier or secondary side switch to generate a predetermined cycle start request signal via a transformer auxiliary winding to assume secondary side regulation and to cause the primary side controller to initiate new power transfer cycles.
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公开(公告)号：US11784600B2
公开(公告)日：2023-10-10
申请号：US15834304
申请日：2017-12-07
发明人： Fei Xu , Kum-Kang Huh , Ahmed Elasser , Mohammed Agamy
CPC分类号： H02P27/06 , H02M3/158 , H02M3/1582 , H02M1/0058 , H02P2201/09 , H02P2201/11 , Y02B70/10
摘要： Systems and methods are provided for a soft switching topology for a direct current (DC)-DC converter. The systems and methods determine an operational status of an electric motor, and activate at least one of an upper or lower first or second semiconductor switches based on an operation of the electric motor. The first and second switching circuits are conductively coupled to a power inverter circuit. The systems and methods include deliver an adjusted voltage to one of the power inverter circuit or a power circuit based on the operational status of the electric motor.
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公开(公告)号：US11782492B2
公开(公告)日：2023-10-10
申请号：US17828471
申请日：2022-05-31
申请人： Intel Corporation
IPC分类号： G06F1/3296 , G06F1/26 , G06F1/3287 , G06F13/42 , G06F1/32 , G06F1/3203 , G06F9/46 , G06F1/3234 , G06F30/00
CPC分类号： G06F1/266 , G06F1/26 , G06F1/32 , G06F1/3203 , G06F1/3243 , G06F1/3287 , G06F1/3296 , G06F9/46 , G06F13/4282 , G06F30/00 , G06F2213/0016 , Y02B70/10 , Y02D10/00
摘要： In one embodiment, a processor includes: a plurality of cores; a first storage to store parameter information for a voltage regulator to couple to the processor via a voltage regulator interface; and a power controller to control power consumption of the processor. The power controller may determine a performance state for one or more cores of the processor and include a hardware logic to generate a message for the voltage regulator based at least in part on the parameter information, where this message is to cause the voltage regulator to output a voltage to enable the one or more cores to operate at the performance state. Other embodiments are described and claimed.
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公开(公告)号：US11722067B2
公开(公告)日：2023-08-08
申请号：US15987493
申请日：2018-05-23
CPC分类号： H02M3/33592 , H02M3/33523 , H02M1/0009 , Y02B70/10
摘要： Disclosed examples include flyback converters, control circuits and methods to facilitate secondary side regulation of the output voltage. A primary side control circuit operates a primary side switch to independently initiate power transfer cycles to deliver power to a transformer secondary winding in a first mode. A secondary side control circuit operates a synchronous rectifier or secondary side switch to generate a predetermined cycle start request signal via a transformer auxiliary winding to assume secondary side regulation and to cause the primary side controller to initiate new power transfer cycles.
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公开(公告)号：US11695343B2
公开(公告)日：2023-07-04
申请号：US17364016
申请日：2021-06-30
发明人： Balu Balakrishnan , David Michael Hugh Matthews , Vikram Balakrishnan , Roland Sylvere Saint-Pierre , Zhao-Jun Wang , Giao Minh Pham , Qing McIntosh
CPC分类号： H02M3/33507 , H02M3/33592 , H02M1/0054 , Y02B70/10
摘要： A control circuit comprising an output controller coupled to an output side of a power converter. The output controller comprises a switch control signal generator to receive a feedback signal representative of an output of the power controller and to communicate a control signal to an input controller coupled to an input side to control a turn ON of a power switch. The control signal is generated in response to the feedback signal and is communicated in response to an enable signal. The output controller comprises an extremum locator to generate the enable signal in response to a winding signal representative of an instantaneous voltage on an output terminal of an energy transfer element and the extremum locator enables the switch control signal generator such that the transition of the power switch from the OFF state to the ON state occurs substantially when the winding signal reaches an extremum.
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