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公开(公告)号：US20240356460A1
公开(公告)日：2024-10-24
申请号：US18683512
申请日：2021-09-03
发明人： Yusuke SHIROUCHI , Ryota ASAKURA , Kenji FUJIWARA
CPC分类号： H02M7/5395 , H02M1/0095 , H02M1/123 , H02M1/385 , H02M1/44 , H02M7/4835
摘要： A power conversion device which converts power from a power supply and supplies the converted power to a load, includes: a first inverter including first capacitors and a plurality of switching elements; a second inverter including a plurality of switching elements, and second capacitors to which voltages smaller than voltages of the first capacitors are applied; and a control device. The control device performs control with dead times applied to the plurality of switching elements, and performs control so that a voltage variation width of combined voltage of output voltage of the first inverter and output voltage of the second inverter during a dead time period is reduced.
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公开(公告)号：US12107490B1
公开(公告)日：2024-10-01
申请号：US17453473
申请日：2021-11-03
发明人： Narendra Nath Gaddam , Trey Roessig , David Lidsky
摘要： An electronic circuit is disclosed. The electronic circuit includes a switching circuit that includes a high side switch connected to a low side switch at a switch node, a controller arranged to generate a high side control signal and a low side control signal, a variable delay circuit arranged to receive the high side control signal and in response transmit a corresponding delayed high side control signal, and to receive the low side control signal and in response transmit a corresponding delayed low side control signal, a high side driver circuit arranged to transmit a high side drive signal to the high side switch in response to receiving the delayed high side control signal, and a low side driver circuit arranged to transmit a low side drive signal to the low side switch in response to receiving the delayed low side control signal.
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公开(公告)号：US20240305219A1
公开(公告)日：2024-09-12
申请号：US18369317
申请日：2023-09-18
发明人： Hyun Jae LIM , Joo Young PARK , Young Kwan KO
IPC分类号： H02M7/5395 , H02M1/00 , H02M1/38 , H02P27/08
CPC分类号： H02M7/5395 , H02M1/0009 , H02M1/385 , H02P27/08
摘要： An inverter driving device includes an inverter including a plurality of legs corresponding to a plurality of phases, and a controller that generates a plurality of pole voltage commands from a plurality of space vector modulation signals corresponding to the plurality of phases and modulates the pole voltage commands through pulse width modulation to control a turn-on state of switches included in the legs, wherein the controller is configured to generate a plurality of discontinuous modulation signals by applying an offset voltage for discontinuous modulation to the plurality of space vector modulation signals if at least one of a maximum voltage and a minimum voltage of the space vector modulation signals is not included in a predetermined linearity range, adjusts at least one of a maximum voltage and a minimum voltage of the discontinuous modulation signals, and outputs the adjusted discontinuous modulation signals as the pole voltage commands.
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4.发明授权公开(公告)号：US12047001B2
公开(公告)日：2024-07-23
申请号：US17750650
申请日：2022-05-23
发明人： Guowang Li
摘要： A zero-crossing correction circuit for a switching converter having a main power switch and a synchronous power switch connected in series, can include: a detection circuit configured to detect an on-off state of a body diode of the synchronous power switch in a first time interval after the synchronous power switch is turned off and generate a detection signal; and a control and adjustment circuit configured to adjust a turn-off moment of the synchronous power switch according to an on-off state of the main power switch in a second time interval after the synchronous power switch is turned off and the detection signal.
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公开(公告)号：US12040725B2
公开(公告)日：2024-07-16
申请号：US17911419
申请日：2020-04-10
发明人： Shota Hanioka , Masahiro Iezawa
IPC分类号： H02M7/5387 , H02M1/00 , H02M1/08 , H02M1/38 , H02P27/06
CPC分类号： H02M7/5387 , H02M1/0009 , H02M1/08 , H02M1/385 , H02P27/06
摘要： A power conversion device includes a switching signal generation unit that generates switching signals so that time points of at least one of pairs synchronize with each other. A first pair includes a rising time point at a first junction point of a first single-phase leg, and a falling time point at a second junction point of a second single-phase leg. A second pair includes a falling time point at the first junction point and a rising time point at the second junction point. The switching signal generation unit determines time points to turn on or turn off for upper arm switching element and a lower arm switching element based on phase currents respectively at a rising time point and at a falling time point of the terminal voltages.
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公开(公告)号：US20240235383A9
公开(公告)日：2024-07-11
申请号：US18237122
申请日：2023-08-23
发明人： Wonmyung Woo , Duhee Jang , Duhee Jang , Jeongil Kang , Hyungwan Kim , Sanghoon Lee
CPC分类号： H02M1/4225 , H02M1/385
摘要： The present disclosure provides power supply apparatuses and controlling methods thereof. In some embodiments, a power supply apparatus includes a power factor correction (PFC) circuit, and a control circuit configured to control the PFC circuit. The PFC circuit includes a power inputter configured to receive alternating current voltage to be rectified, an inductor having an end coupled to an end of the power inputter, a first switching element configured to be turned on and off according to a first control signal, a second switching element configured to be turned on and off according to a second control signal, and an outputter configured to output a direct current voltage through an output capacitor. The control circuit is further configured to respectively apply the first and second control signals to the first and second switching elements such that the first and the second switching elements are alternately turned on.
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公开(公告)号：US12034392B2
公开(公告)日：2024-07-09
申请号：US17861493
申请日：2022-07-11
发明人： Yong Jae Lee , Kang Ho Jeong , Young Seul Lim , Jae Hoon Shim , Jung Ik Ha
IPC分类号： H02P27/08 , H02M1/38 , H02M7/5395
CPC分类号： H02P27/08 , H02M1/38 , H02M7/5395
摘要： An apparatus configured for driving a motor, includes a first inverter including a first switching elements and connected to a first end of each of a windings respectively corresponding to a plurality of phases of the motor, a second inverter including a second switching elements and connected to a second end of each of the windings, a switches including first ends respectively connected to nodes to which the windings and the second switching elements are respectively connected and second ends connected to each other, and a controller configured to drive the motor in one of a first driving mode for driving the motor by maintaining the second switching elements in an open state and performing pulse width modulation control for the first switching elements and a second driving mode for driving the motor by performing pulse width modulation control for the first switching elements and the second switching elements.
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公开(公告)号：US20240223104A1
公开(公告)日：2024-07-04
申请号：US18606916
申请日：2024-03-15
发明人： Yeong-Hoon SOHN , Se-Hong PARK , Sae-Hoon UHM
IPC分类号： H02M7/537 , H02M1/38 , H02M7/5387 , H03H7/38 , H05H1/46
CPC分类号： H02M7/537 , H02M1/38 , H02M7/5387 , H03H7/38 , H05H1/4652
摘要： A power supply includes an inverter configured to convert direct current (DC) power into alternating current (AC) power, an impedance matching circuit configured to supply the AC power to a load, and a controller configured to detect a delay time of an output voltage and an output current output to the impedance matching circuit and the load and to adjust a frequency of the output voltage according to the detected delay time.
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公开(公告)号：US20240223085A1
公开(公告)日：2024-07-04
申请号：US18607702
申请日：2024-03-18
发明人： Chia-Chun Chang , Alan Roth , Eric Soenen , Tysh-Bin Liu
CPC分类号： H02M3/158 , H02M1/08 , H02M1/38 , H02M3/157 , H02M1/0009 , H02M1/0029
摘要： Devices and methods are provided for controlling dead-time of a direct current to direct current (DC-DC) converter. A control circuit includes a first transistor having a source/drain terminal coupled to an output voltage of the DC-DC converter configured to provide current based on the output voltage. The control circuit also includes a digital up/down counter having an output terminal electrically coupled to an input terminal of a delay cell of the DC-DC converter. A current sensing circuit of the control circuit is electrically coupled to an input terminal of the digital up/down counter configured to receive the current and drive the digital up/down counter based on the current.
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公开(公告)号：US11990848B1
公开(公告)日：2024-05-21
申请号：US18124862
申请日：2023-03-22
申请人： Vicor Corporation
发明人： Patrizio Vinciarelli
IPC分类号： H02M1/32 , H02M1/38 , H02M3/00 , H02M3/335 , H02M7/00 , H02M7/219 , H03K17/06 , H03K17/30 , H03K17/687 , H02M1/00
CPC分类号： H02M7/219 , H02M1/32 , H02M1/38 , H02M3/01 , H02M3/33507 , H02M3/33576 , H02M7/003 , H03K17/063 , H03K17/302 , H03K17/6871 , H02M1/0032 , H02M1/325 , Y02B70/10
摘要： A power converter provides a low-voltage output using a full-bridge fault-tolerant rectification circuit. The output circuit uses controlled switches as rectifiers. A fault detection circuit monitors circuit conditions. Upon detection of a fault, the switches are disabled decoupling the power converter from the system.
A common-source dual MOSFET device includes a plurality of elements arranged in alternating patterns on a semiconductor die. A common-source dual synchronous rectifier includes control circuitry powered from the drain to source voltage of the complementary switch.
A DC-to-DC transformer converts power from an input source to a load using a fixed voltage transformation ratio. A clamp phase may be used to reduce power losses in the converter at light loads, control the effective output resistance of the converter, effectively regulate the voltage transformation ratio, provide narrow band output regulation, and control the rate of change of output voltage for example during start up. One or more of the transformer windings may be clamped. The converter may use the sine amplitude converter topology. The converter may use common-source dual MOSFET devices and fault detection.
The density of point of load power conversion may be increased and the associated power dissipation reduced by removing the input driver circuitry from the point of load where it is not necessary. An output circuit may be located at the point of load providing fault tolerant rectification of the AC power from the secondary winding of a power transformer which may be located nearby the output circuit. The resonant voltage and current waveforms on the primary side of the transformer are readily communicated via an AC bus between the driver circuit and the primary winding of the power transformer. The driver circuit may drive a plurality of transformer-output circuit pairs. The transformer and output circuit may be combined in a single module at the point of load. Alternatively, the output circuit may be integrated into point of load circuitry such as a processor core. The transformer may be deployed near the output circuit.
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