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公开(公告)号：US20240364235A1
公开(公告)日：2024-10-31
申请号：US18616752
申请日：2024-03-26
申请人： AcLeap Power Inc.
发明人： Qixue YU , Ming FU , Lishen ZHOU
IPC分类号： H02M7/5387 , H02M1/00 , H02M1/08
CPC分类号： H02M7/53873 , H02M1/0025 , H02M1/083
摘要： In one embodiment, a switching frequency adjusting circuit includes an inverter circuit, a phase difference determining circuit, an average determination circuit, and a loop compensator. The inverter circuit includes an inverter switch configured to switch on and off at a switching frequency. The phase difference determination circuit is configured to obtain a first signal related to an output voltage of the inverter circuit and a second signal related to an output current of the inverter circuit. The average determination circuit is configured to determine a first average value of a first output signal and a second average value of a second output signal, and the loop compensator is configured to compare the first average value or the second average value with a reference value and adjust the switching frequency of the inverter switch based on the comparison result.
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公开(公告)号：US20240364223A1
公开(公告)日：2024-10-31
申请号：US18308738
申请日：2023-04-28
发明人： Isaac Cohen
CPC分类号： H02M3/33523 , H02M1/0025
摘要： The techniques and circuits, described herein, include solutions for multimode current control for pulse width modulation (PWM) converters. In some aspects, a slope control circuit is used to simulate a current through an inductor during a discharging phase as a voltage across a switching capacitor. A slope-control voltage is used to modify the slope of the simulated current waveform relative to an actual inductor current waveform. Based on if a magnitude of the modified slope is greater than, less than, or equal to the actual slope, the converter may be selectively operated in continuous conduction mode (CCM), discontinuous conduction mode (DCM), or transition mode (TM) respectively.
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公开(公告)号：US20240364205A1
公开(公告)日：2024-10-31
申请号：US18646681
申请日：2024-04-25
发明人： Haoyi Ye
CPC分类号： H02M1/0048 , H02M3/156
摘要： A power conversion circuit and a power conversion device are provided. In the power conversion circuit, the upper switch, the middle switch and the lower switch form a three-switch bridge arm; By controlling the duty ratio of the upper switch, the gain ratio of the required input voltage to the output voltage is realized; On the other hand, the layout of the power conversion device is disclosed, and the layout of the power conversion device comprises the layout of a transformer area, a switch area, an inductance area and components. A driving power supply scheme which is used for realizing driving power supply of the three-switch bridge arm. A pre-charging unit which is used for pre-charging the flying capacitor before the power conversion device is started, and the instantaneous impact current generated when the switch in the power conversion circuit is turned on is reduced.
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公开(公告)号：US20240364200A1
公开(公告)日：2024-10-31
申请号：US18354879
申请日：2023-07-19
申请人： SK hynix Inc.
发明人： Ji Hee HAN
CPC分类号： H02M1/0003 , H02M3/156
摘要： An electronic device includes a synthetic voltage generation circuit configured to generate a synthetic voltage by synthesizing a supply voltage a voltage level of which is changed in response to a change in a voltage level of a first external voltage and an upper limit reference voltage a voltage level of which is set in response to a first selection signal and a second selection signal that are generated by detecting a process, voltage, and temperature (PVT) variation, and an internal voltage generation circuit configured to, based on the synthetic voltage, generate an internal voltage that is used as a body voltage of a transistor included in an internal circuit.
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公开(公告)号：US12132412B2
公开(公告)日：2024-10-29
申请号：US17820877
申请日：2022-08-18
发明人： Hong Liu , Hongyang Wu , Cheng Lu , Weiqiang Zhang , Xingkuan Guo
CPC分类号： H02M7/219 , H02M1/0067 , H02M1/0074
摘要： The present application provides a power supply apparatus, a three-phase power supply system and a control method, including N modules, where N is a positive integer greater than or equal to 2, and each module includes: a transformer, including a primary winding and a first secondary winding; and a first switch unit connected to the first secondary winding of the transformer, where primary windings of transformers of the N modules are connected in series, the first switch unit operates in one of a bypass mode, an open-circuit mode and a modulation mode, an output of each module is controlled by the first switch unit, so as to make the power supply apparatus provide voltages of different amplitudes according to power demand, and transformers with large volume and heavy weight, such as a centralized line frequency transformer or a multiple-winding transformer, are no longer required.
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公开(公告)号：US12132402B2
公开(公告)日：2024-10-29
申请号：US18480074
申请日：2023-10-03
CPC分类号： H02M3/158 , H02M1/0032 , H02M1/0048
摘要： An electrical system includes: 1) a buck converter; 2) a battery coupled to an input of the buck converter; and 3) a load coupled to an output of the buck converter. The buck converter includes a high-side switch, a low-side switch, and regulation loop circuitry coupled to the high-side switch and the low-side switch. The regulation loop circuitry includes: 1) a main comparator; 2) a bias current source coupled to the main comparator and configured to provide a bias current to the main comparator; and 3) a dynamic biasing circuit coupled to the main comparator and configured to add a supplemental bias current to the bias current in 100% mode of the buck converter. The supplemental bias current varies depending on an input voltage (VIN) and an output voltage (VOUT) of the buck converter.
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公开(公告)号：US12132387B2
公开(公告)日：2024-10-29
申请号：US17629066
申请日：2020-07-22
发明人： Robert Erickson , Aaron Rogers , Roger Bell
IPC分类号： H02M7/48 , H02M1/00 , H02M7/5387
CPC分类号： H02M1/0043 , H02M1/0058 , H02M1/0085 , H02M1/009 , H02M7/4807 , H02M7/53871
摘要： Inverters that interface dc and ac power sources and loads are provided. An example application is solar power systems, in which a dc source of power is an array of solar panels; the inverter converts the dc power supplied by these panels to ac power that is fed into the utility grid. Another example is battery energy storage; the inverter changes the dc power of the batteries into ac power that is fed into the grid, and also can convert (rectify) ac power from the grid for charging the batteries. In one embodiment, for example, an inverter comprises slow switches that generate a three-level ac voltage, followed by a plurality of fast-switching half-bridges that introduce high-frequency pulse-width modulation into a plurality of ac output voltages.
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公开(公告)号：US12132385B2
公开(公告)日：2024-10-29
申请号：US17868954
申请日：2022-07-20
发明人： Chaojun Chen , Jian Deng , Jin Jin
CPC分类号： H02M1/0019 , H02M1/0025 , H02M1/0045 , H02M3/015
摘要： A control circuit for a resonant converter, can include: a feedforward circuit configured to generate a feedforward current; a charge feedback circuit configured to receive a resonant current sampling signal representing a resonant current of the resonant converter in a first mode to generate a charge feedback signal, and to receive the resonant current sampling signal and the feedforward current together to generate the charge feedback signal in a second mode; and a driving control circuit configured to generate driving signals according to the charge feedback signal and a first threshold signal, in order to control switching states of power transistors of the resonant converter, where the first threshold signal is generated according to an error compensation signal representing an error information between a feedback signal of an output signal of the resonant converter and a reference signal.
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公开(公告)号：US12132384B2
公开(公告)日：2024-10-29
申请号：US17747180
申请日：2022-05-18
申请人： Airbus SAS
发明人： Florian Kapaun , Gerhard Steiner
IPC分类号： G01R19/00 , G01R19/165 , G01R31/56 , H02M1/00
CPC分类号： H02M1/0009 , G01R19/16571 , G01R31/56
摘要： To enable early detection of AC insulation faults, or to permit easier, faster and more accurate measurement of small currents in inverters, a current measuring circuit for a converter is provided. The current measuring circuit has a positive supply rail, a negative supply rail, a reference potential rail and a current measuring device that contains a Y-capacitor and a current sensor connected in series therewith. The load current can be decoupled from the measurement current through the at least one Y-capacitor, so that at high load currents even small fault currents can be acquired reliably with the current sensor.
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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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