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公开(公告)号：US12132383B2
公开(公告)日：2024-10-29
申请号：US17730200
申请日：2022-04-27
发明人： Isaac Cohen
CPC分类号： H02M1/0009 , H02M3/155
摘要： In described examples, a circuit includes a voltage sensor that has an output, first and second transconductance amplifiers, first and second switches, a capacitive element, a comparator, and a sampling circuit. Each of the first and second transconductance amplifiers has a respective input, a respective output, and a respective transconductance. The first switch is coupled between the voltage sensor output and the first transconductance amplifier input. The second switch is coupled between the voltage sensor output and the second transconductance amplifier input. The capacitive element has a first terminal coupled to the respective outputs of the first and second transconductance amplifiers. The comparator has a respective input and a respective output. The comparator input is coupled to the respective outputs of the first and second transconductance amplifiers and to the first terminal of the capacitive element. The sampling circuit is coupled to the output of the comparator.
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公开(公告)号：US12126276B2
公开(公告)日：2024-10-22
申请号：US17767473
申请日：2020-09-30
申请人： Nidec Corporation
发明人： Ming-Tsan Lin , Yi-Shiang Ouyang , Hsin-Chang Yu
IPC分类号： H02M1/00 , H02M3/155 , H02M7/5387 , H02P27/08
CPC分类号： H02M7/53871 , H02M1/007 , H02M3/155 , H02P27/08 , H02M1/0048
摘要： A power converter to supply power to each phase of a three-phase motor includes a booster circuit connected to a DC power supply to boost an input voltage input from the DC power supply in response to a pulse width modulation boosting signal, an inverter connected to the booster circuit and including a three-phase switching circuit including switches, and an output connected to the three-phase switching circuit to supply power to each phase of the three-phase motor, and a controller to output the pulse width modulation boosting signal to the booster circuit and output the pulse width modulation boosting signal to the booster circuit when detecting that the booster circuit is in a boosted state.
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公开(公告)号：US20240333128A1
公开(公告)日：2024-10-03
申请号：US18620294
申请日：2024-03-28
发明人： Haruki Kamikura , Kinya Matsuda
CPC分类号： H02M1/0048 , H02M1/0025 , H02M3/155 , H02M7/06
摘要： An integrated circuit device includes: a semiconductor substrate set at a substrate potential; a rectifier circuit that rectifies an AC voltage by a rectifier element provided at the semiconductor substrate and outputs a rectified voltage; and a BGR circuit provided at the semiconductor substrate and generates a reference voltage based on the rectified voltage. The BGR circuit includes an operational amplifier having a first input terminal and a second input terminal, a diode element provided between the first input terminal and a substrate potential node, a resistor and a diode element provided in series between the second input terminal and the substrate potential node, a capacitor provided between the first input terminal and the substrate potential node, and a capacitor provided between the second input terminal and the substrate potential node.
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公开(公告)号：US20240322681A1
公开(公告)日：2024-09-26
申请号：US18244173
申请日：2023-09-08
摘要： According to one embodiment, a semiconductor device includes: a switch circuit including a first switch configured to control an output of a first power supply voltage, and a second switch configured to control an output of a second power supply voltage, the switch circuit being configured to switch the first power supply voltage and the second power supply voltage; and a control circuit configured to receive a first control signal related to an input of the first power supply voltage, and a second control signal related to an input of the second power supply voltage, configured to detect the inputs of the first and second power supply voltages, and configured to control an operation mode of the switch circuit, based on a detection result of the first and second control signals and the first and second power supply voltages.
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公开(公告)号：US20240321511A1
公开(公告)日：2024-09-26
申请号：US18607519
申请日：2024-03-17
发明人： Jianhong ZENG
摘要： A magnetic assembly is provided. The magnetic assembly comprises a magnetic core and two winding combinations. The magnetic core comprises a middle column, two side columns and two magnetic substrates. The middle column and the two side columns are arranged between the two magnetic substrates, and the middle column is arranged between the two side columns. The two winding combinations are respectively wound on one side column, each winding combination comprises two windings which are connected with each other. The voltage at the two ends of one winding wound on one side column is 90 degrees out of phase with the voltage of the two ends of one winding wound on the other side column.
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6.发明公开公开(公告)号：US20240313633A1
公开(公告)日：2024-09-19
申请号：US18451831
申请日：2023-08-17
发明人： Hung-Yuan CHU , Chen-Wei YEH
CPC分类号： H02M1/083 , H02M1/0009 , H02M3/155
摘要： A voltage converter capable of adjusting a zero-crossing reference current includes a first power switch, a second power switch, a current sensor circuit, a zero-crossing reference current source, and an adjustment circuit. The first power switch and the second power switch are coupled in series to generate an inductor current. The current sensor circuit is coupled to the second power switch to sense a current flowing through the second power switch and generate a sensing current. The zero-crossing reference current source outputs a zero-crossing reference current. The adjustment circuit is coupled to the current sensor circuit and the zero-crossing reference current source to receive the sensing current and the zero-crossing reference current, so as to control the second power switch and adjust the zero-crossing reference current according to the sensing current and the zero-crossing reference current.
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公开(公告)号：US20240266939A1
公开(公告)日：2024-08-08
申请号：US18107007
申请日：2023-02-08
CPC分类号： H02M1/0045 , H02M3/155 , H02M7/217
摘要： A modular power conversion system is provided which includes a plurality of modules (building blocks) comprised of transformers and power conversion bridges. The modules are connected in series on either the input or output side and in parallel on the other side. A substantial number of the modules are operated in a fixed input-to-output voltage ratio, with the remaining module(s) operated in a variable input-to-output ratio. The fixed ratio modules are either placed in an active mode or in a bypassed mode. A controller sets the proportion of active and bypassed modules and controls the variable ratio modules, thus allowing an adjustable input-to-output ratio for the overall converter system. Prior to the bypassing of a module, the energy stored in its internal bus or link is dissipated or stored in an auxiliary circuit or moved to a neighboring module.
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公开(公告)号：US12057765B2
公开(公告)日：2024-08-06
申请号：US17707329
申请日：2022-03-29
摘要： Apparatuses and methods for operating a power converter are described. An integrated circuit can be integrated in a high-side driver of a high-side fiend-effect transistor (FET) of the power converter. The integrated circuit can detect a phase node voltage of a power integrated circuit. The integrated circuit can, in response to the phase node voltage being less than a threshold voltage, operate a high-side FET of the power integrated circuit in a constant-current mode. The integrated circuit can, in response to the phase node voltage being greater than the threshold voltage, operate the high-side FET of the power integrated circuit in a constant-voltage mode.
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公开(公告)号：US20240250602A1
公开(公告)日：2024-07-25
申请号：US18596214
申请日：2024-03-05
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：US20240243658A1
公开(公告)日：2024-07-18
申请号：US18521225
申请日：2023-11-28
发明人： Ryuji YAMADA
IPC分类号： H02M3/155 , G01R19/175 , H02M1/08 , H03K5/24
CPC分类号： H02M3/155 , G01R19/175 , H02M1/08 , H03K5/24
摘要： A current detection circuit for a power supply circuit configured to generate an output voltage from an input voltage thereof, the power supply circuit including an inductor configured to receive the input voltage, a transistor configured to control an inductor current flowing through the inductor, and a diode coupled to a first node that is a node at which the inductor and the transistor are coupled. The current detection circuit is configured to detect the inductor current, and includes: a first capacitor coupled to the first node; and a second capacitor provided between the first capacitor and a ground, the second capacitor being coupled in series with the first capacitor.
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