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公开(公告)号：US20240276611A1
公开(公告)日：2024-08-15
申请号：US18563444
申请日：2022-05-19
申请人： SIGNIFY HOLDING B.V.
发明人： YU WANG , JIE FU , ZHIQUAN CHEN , GANG WANG
IPC分类号： H05B45/355 , H02M1/00 , H02M1/15 , H02M1/42 , H05B45/36 , H05B45/3725
CPC分类号： H05B45/355 , H02M1/0043 , H02M1/15 , H02M1/4225 , H05B45/36 , H05B45/3725
摘要： A driving arrangement is provided for driving a load, comprising a driver input for receiving an input power and a driver output to be coupled to the load. A high frequency switch mode PFC converter converts the input power to a PFC converter power and a high frequency switch mode regulator has an output connected in series with the output of the PFC converter. A superimposed power from the PFC converter and the regulator with synchronized high frequency switching is provided to the load. This enables a high frequency ripple to be at least partially cancelled. Wherein the charging phase of the PFC converter at least partially overlaps with the first phase of the regulator in which phase the regulated power increases.
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公开(公告)号：US12027969B2
公开(公告)日：2024-07-02
申请号：US17287428
申请日：2019-10-23
CPC分类号： H02M1/15 , B60L53/22 , H02J7/02 , H02M1/10 , H02M1/4208 , H02M1/4216 , H02M3/33573 , H02M3/33584 , H02M7/219 , B60L2210/30 , H02J2207/20 , H02M1/44
摘要： A converter for electrical connection to a three-phase electrical grid and a single-phase electrical grid is provided. The converter includes three DAB modules, each for converting a respective alternating current of a three-phase electrical grid. When connected to a single-phase electrical grid, the third DAB module is bi-directional such that it is operable to filter the power output of the first and second DAB modules. The converter further includes a filter capacitor in electrical communication with the third DAB module through a relay, wherein the relay is responsive to a controller to couple the third DAB module to the filter capacitor when the single-phase electrical grid is detected and to couple the third DAB module to a grid rectifier when the three-phase electrical grid is detected.
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公开(公告)号：US11996764B2
公开(公告)日：2024-05-28
申请号：US17588365
申请日：2022-01-31
发明人： Alvaro Aguilar , Yutian Cui
CPC分类号： H02M1/15 , H02M1/0095 , H02M3/07 , H02M3/158
摘要： Described embodiments include a circuit for limiting power converter output ripple. A first transistor has a first current terminal receiving an input voltage, and a second current terminal coupled to a first capacitor. A second transistor has a third current terminal coupled to the first capacitor, and a fourth current terminal is coupled to a second capacitor. A third transistor has a fifth current terminal coupled to the second capacitor, and a sixth terminal coupled to a filter input. A fourth transistor has a seventh current terminal coupled to the second current terminal, and an eighth current terminal coupled to the sixth current terminal. A fifth transistor has a ninth current terminal coupled to the fourth current terminal, and a tenth current terminal coupled to the sixth current terminal.
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公开(公告)号：US11962304B2
公开(公告)日：2024-04-16
申请号：US17707902
申请日：2022-03-29
IPC分类号： H03K3/57 , H02M1/088 , H02M1/15 , H02M3/155 , H02M3/158 , H02M3/337 , H02M11/00 , H03K3/36 , H03K3/53 , H03K17/16 , H03K17/56
CPC分类号： H03K3/57 , H02M3/1588 , H02M11/00 , H03K3/36 , H03K3/53 , H03K17/164 , H03K17/56 , H02M1/088 , H02M1/15 , H02M3/155 , H02M3/3378
摘要： Some embodiments of the invention include a pre-pulse switching system. The pre-pulsing switching system may include: a power source configured to provide a voltage greater than 100 V; a pre-pulse switch coupled with the power source and configured to provide a pre-pulse having a pulse width of Tpp; and a main switch coupled with the power source and configured to provide a main pulse such that an output pulse comprises a single pulse with negligible ringing. The pre-pulse may be provided to a load by closing the pre-pulse switch while the main switch is open. The main pulse may be provided to the load by closing the main switch after a delay Tdelay after the pre-pulse switch has been opened.
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公开(公告)号：US20240048044A1
公开(公告)日：2024-02-08
申请号：US18218114
申请日：2023-07-05
申请人： ZHEJIANG UNIVERSITY
发明人： Faxin YU , Yihe WANG , Xiaofeng LV , Hua CHEN , Jiongjiong MO , Zhiyu WANG
CPC分类号： H02M1/12 , H02M1/0022 , H02M1/15 , H02M3/158
摘要： The present disclosure provides an adapter circuit including a bus capacitor, a PMOS power transistor, and a sampling control module; a positive terminal of the bus capacitor is connected to a DC bus voltage, and a negative terminal of the bus capacitor is connected to a drain of the PMOS power transistor; a gate of the PMOS power transistor is connected to a drive signal, and a source of the PMOS power transistor is grounded; the sampling control module is used to obtain the drive signal by detecting an AC mains input voltage and a power-down voltage when the bus discharges, so as to turn off the PMOS power transistor after the AC mains input voltage reaches a peak value, and turn on the PMOS power transistor after the power-down voltage reaches a set voltage; the drive signal includes a PMOS Turn-on signal and a PMOS Turn-off signal.
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公开(公告)号：US11791710B2
公开(公告)日：2023-10-17
申请号：US17182856
申请日：2021-02-23
申请人： Apple Inc.
发明人： Jie Lu , Brandon Pierquet , Ashish K. Sahoo
CPC分类号： H02M1/15 , H02M5/293 , H02M7/53 , H02M1/0054 , H02M1/0074 , H02M1/0095 , H02M3/33571 , H02M7/4833
摘要： A stacked half bridge converter may be configured to provide an AC output voltage from either a DC or an AC input voltage. The switching devices of the converter may be operated according to a plurality of switching sequences, each switching sequence including one or more switching patterns, each switching pattern including one or more switching states of the switching devices. The switching sequences, patterns, and states may be selected to improve operation of the converter, by regulating the voltage at a neutral point of the converter to reduce ripple, increase switching efficiency, protect the switching devices from overvoltages, and the like.
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公开(公告)号：US11770064B2
公开(公告)日：2023-09-26
申请号：US17119553
申请日：2020-12-11
CPC分类号： H02M1/0025 , H02M1/0016 , H02M3/1566 , H02M3/1584 , H02M3/1586 , H02M1/00 , H02M1/0009 , H02M1/15 , H02M3/04 , H02M3/157 , H02M3/1582 , H02M1/0025 , H02M1/0016
摘要： A system for controlling a current in a power converter configured to generate an output voltage may include a control loop having a plurality of comparators, each comparator having a respective reference voltage to which the output voltage is compared, a digital controller configured to calculate one or more pre-seeded control parameters for the current, and an analog state machine configured to, based on outputs of the plurality of comparators, select control parameters for controlling the current. The control parameters may be selected from the pre-seeded control parameters, control parameters for controlling the current to have a magnitude of zero, and control parameters for controlling the current to have a maximum magnitude.
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公开(公告)号：US20230188029A1
公开(公告)日：2023-06-15
申请号：US17572607
申请日：2022-01-10
申请人： Raytheon Company
发明人： Marty Perry , Robert J. Schaller
CPC分类号： H02M1/15 , H02M3/158 , H02M1/344 , H02M3/33576
摘要： A dual-path active damper reduces power losses while damping ringing waveforms in resonant circuits. One path clamps the peak value of a node voltage at less than a rated voltage of a protected device while allowing the node voltage to ring and decay naturally. Another path waits for some delay after the peak value is clamped until closing an active switch to draw a reset current through an RC snubber to actively dampen the ringing of the node voltage. The delay and on-time of the active switch are set to reduce or even minimize power losses for damping the ringing waveform within a specified period.
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公开(公告)号：US20230093890A1
公开(公告)日：2023-03-30
申请号：US17580239
申请日：2022-01-20
发明人： Eiji HIRAKI , Kazuhiro UMETANI , Kouta SHIMOMURA
摘要： A control method, a controller, and a control system including a converter and the controller are provided to improve load responsiveness of control by the converter. The converter has a primary circuit that includes a voltage generation circuit for generating a square wave and a resonant circuit for converting a waveform of the generated square wave, and a secondary circuit that is electromagnetically coupled to the primary circuit and that generates an induced electromotive force. The controller controls the voltage generation circuit by a control target power factor. To implement power factor-based control, the controller controls the voltage generation circuit, based on a derived power factor derived from an active power and an apparent power relevant to the resonant circuit in the primary circuit or a derived power factor derived from a phase of the primary circuit.
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公开(公告)号：US20230082592A1
公开(公告)日：2023-03-16
申请号：US17942955
申请日：2022-09-12
发明人： Pengbo YANG , Xiaoru GAO
摘要： A controller chip of a flyback converter, a flyback converter and a switched-mode power supply system are disclosed. In the controller chip, a current scaling module is added, which converts a feedback current signal at a feedback pin of the controller chip to allow compensation capacitor with a small capacitance to be integrated into the chip to constitute a required pole compensation module. In this way, a pole required by the feedback pin FB can be successfully provided in the chip. As a result, filtering of high-frequency noise in a feedback path in which the feedback pin FB is located can be achieved, reducing ripple in an output voltage generated by the flyback converter. Moreover, without changing a sampling gain and the compensation pole, it is allowed to greatly reduce the compensation capacitance, for example, to the order of 10 pF.
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