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公开(公告)号：US20240364210A1
公开(公告)日：2024-10-31
申请号：US18309001
申请日：2023-04-28
发明人： Florian Neveu , Stefan Schimonsky , Joerg Kirchner
CPC分类号： H02M1/32 , H02M1/0009 , H02M3/157 , H02M3/1582
摘要： The techniques and circuits, described herein, include solutions for pass-through operation including overcurrent protection in buck-boost converters. In some aspects, first and second switches selectively couple inputs of a peak current comparator to inputs of an error amplifier during pass-through operation. As part of peak current control scheme, one of the peak current comparator inputs is coupled to a current sensor that senses a current through an inductor of the buck-boost converter. As a result, an output of the error amplifier tracks the inductor current during pass-through mode, which may be utilized to implement inductor overcurrent protection in the pass-through mode.
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公开(公告)号：US20240364209A1
公开(公告)日：2024-10-31
申请号：US18308180
申请日：2023-04-27
发明人： Giovanni Bisson , Stefano Zampieri
摘要： A device may drive, during a first portion of a switching period, a first switching element to electrically connect a switching node to a first node of a supply. The switching node is configured to couple to a first node of an inductive element. The device may drive, during a second portion of the switching period, a second switching element to electrically connect the switching node to a second node of the supply of the controller circuitry. The device may drive, during a third portion of the switching period, the first switching element to refrain from connecting the switching node to the first node of the supply of the controller circuitry, the second switching element to refrain from connecting the switching node to the second node of the supply, and a third switching element to electrically connect the switching node to a second node of the inductive element.
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公开(公告)号：US20240364204A1
公开(公告)日：2024-10-31
申请号：US18308042
申请日：2023-04-27
发明人： Ari Vaananen , Janne Pahkala
CPC分类号： H02M1/0045 , H02M1/0003 , H02M3/158
摘要： A voltage regulator includes a transconductance amplifier having an input and an output. The input is coupled to a voltage regulator output. A droop compensation circuit is coupled to the output of the transconductance amplifier. The droop compensation circuit includes a voltage source circuit configured to cause a voltage at an output of the voltage regulator to change from a first voltage level to a second voltage level in response to a first change in a load condition and remain at the second voltage level until a second change in the load condition. The droop compensation circuit also is configured to cause the voltage at the output of the voltage regulator to change from the second voltage level back to the first voltage level in response to the second change in the load condition.
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公开(公告)号：US12132403B1
公开(公告)日：2024-10-29
申请号：US17939820
申请日：2022-09-07
申请人： Vicor Corporation
发明人： Patrizio Vinciarelli
CPC分类号： H02M3/1584 , H02M1/4241 , H02M3/33523 , H02M3/33569 , H02M1/0003 , H02M1/0058
摘要： An isolated, power factor corrected, converter, for operation from a three-phase AC source, comprises three power processors, each power processor connected to one of the three phases. Each power processor comprises a cascade of a first and a second power conversion stage. At least one of the first and second power converters in each power processor is configured to provide galvanic isolation through a DC Transformer between the power processor input and output. At least one of the first and second power converters in each power processor is configured to provide power factor correction at the AC source. Substantially all of the bulk energy storage and low frequency filtering is provided by storage elements at the output of the power system. Low voltage semiconductor devices may be cascaded to implement low output capacitance high voltage switches in a multi-cell resonant converter for high voltage applications.
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公开(公告)号：US12132401B2
公开(公告)日：2024-10-29
申请号：US18056758
申请日：2022-11-18
发明人： Rui Liu , Sofjan Goenawan
摘要： An apparatus includes a PWM ramp generator coupled between a switching node of a power converter and a first input of a comparator, the PWM ramp generator including a first resistor and a first capacitor connected in series between the switching node and the first input of the comparator, and a second resistor and a second capacitor connected in parallel between the first input of the comparator and a feedback node, and a PFM control circuit including an error amplifier and a current zero crossing detection comparator, wherein the error amplifier is coupled between a second input of the comparator and a reference node, and the PFM control circuit is configured to generate gate drive signal for the power converter when the power converter is configured to operate in a PFM mode.
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公开(公告)号：US12126263B2
公开(公告)日：2024-10-22
申请号：US17704618
申请日：2022-03-25
申请人： ROHM CO., LTD.
发明人： Tatsuya Yanagi , Hirotaka Otake
IPC分类号： H02M3/158 , H02M1/08 , H02M7/5395
CPC分类号： H02M3/1588 , H02M1/08 , H02M7/5395
摘要： A power conversion circuit in which a switching transistor and a synchronous rectifier transistor are connected in series, and a source inductance of the switching transistor is smaller than a source inductance of the synchronous rectifier transistor.
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公开(公告)号：US12126261B2
公开(公告)日：2024-10-22
申请号：US18210804
申请日：2023-06-16
CPC分类号： H02M3/1586 , H02J9/062 , H02M1/0009 , H02M1/14 , H02M7/483
摘要： Examples of the disclosure include a UPS comprising an output to be coupled to a load, a first converter leg to provide a first voltage to the output and including at least one of a first relay or fuse, a second converter leg in parallel with the first converter leg including at least one of a second relay or fuse and configured to provide a second voltage to the output out of phase with the first converter leg providing the first voltage signal, current sensors coupled to the first and second converter legs, respectively, and configured to provide a first signal indicative of a current in the first converter leg and a second signal indicative of a current in the second converter leg, respectively, and at least one controller to receive the signals, determine a current difference between the converter legs based on the signals, and decrease the current difference.
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公开(公告)号：US20240348158A1
公开(公告)日：2024-10-17
申请号：US18751670
申请日：2024-06-24
发明人： Masami KISHIRO
摘要： A power supply circuit includes: an input terminal that receives an input voltage; an inductor; a switching circuit electrically connected to the inductor and configured to switch between a storing period for storing energy in the inductor and a discharge period for discharging the energy stored in the inductor; an output terminal that receives a current from the inductor in the storing and discharging periods; a transistor electrically connected to the inductor and serving as a portion of a path of a current flowing to the inductor in the storing and discharging periods. The output terminal outputs a voltage based on the storing period, the discharging period, and the input voltage. The transistor stops a switching operation that is used to switch between the storing and discharging periods, by preventing the current flowing to the inductor, in a signal processing period in which a signal processing circuit is processing a signal.
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公开(公告)号：US20240348050A1
公开(公告)日：2024-10-17
申请号：US18605593
申请日：2024-03-14
申请人： AA Power Inc.
发明人： Qun Lu
IPC分类号： H02J3/12 , G06Q30/0283 , H02M1/42 , H02M3/158 , H02M3/335
CPC分类号： H02J3/12 , G06Q30/0283 , H02M1/4225 , H02M3/158 , H02M3/33573 , H02M3/33576
摘要： A method includes generating a turbo mode operation instruction based on a plurality of operating conditions, based on the turbo mode operation instruction, adjusting a system limit of a power supply so as to provide excess power to a load coupled to the power supply, detecting at least one operating parameter to obtain a detected operating parameter, determining whether the detected operating parameter exceeds a predetermined threshold, and reducing the system limit of the power supply so that the detected operating parameter drops below the predetermined threshold.
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公开(公告)号：US12120442B2
公开(公告)日：2024-10-15
申请号：US17760170
申请日：2020-12-28
发明人： Masahiro Ichihashi
IPC分类号： H04N25/709 , H02M3/158
CPC分类号： H04N25/709 , H02M3/1582
摘要： To reduce power consumption of a driver circuit used in a vertical drive circuit of an image processing device.
In the driver circuit, a drive signal output circuit outputs a drive signal in accordance with a predetermined trigger signal. Furthermore, at a time of rising of the drive signal, a step-up switch sequentially selects a plurality of voltages in ascending order, and supplies the selected voltage to the drive signal output circuit. Moreover, at a time of falling of the drive signal, a step-down switch sequentially selects a plurality of voltages in descending order, and supplies the selected voltage to the drive signal output circuit.
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