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71.发明申请公开(公告)号：US20200156491A1
公开(公告)日：2020-05-21
申请号：US16751588
申请日：2020-01-24
申请人： ABB Schweiz AG
摘要： The application relates to an electrical vehicle charging device for charging an electrical vehicle with a DC voltage, including a power converter having an input side adapted for receiving an AC voltage from an AC grid or a DC voltage from a DC grid and an output side, a transformer having a primary side connected to the output side and a secondary side, a full wave rectifier having a first and a secondary input connected to the secondary side and a positive and a negative output, at least two output capacitors connected between respective end taps in series via a center tap and between the positive and a negative output, whereby the end taps are adapted for providing the DC voltage to the electrical vehicle, and a switch connected in series between the first or the secondary input and the center tap, and whereby the electrical vehicle charging device is adapted for closing and/or opening the switch depending on a DC voltage level required for charging the electrical vehicle.
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公开(公告)号：US10651751B2
公开(公告)日：2020-05-12
申请号：US16352804
申请日：2019-03-13
申请人： Yazaki Corporation
发明人： Shota Yoshimitsu , Satoshi Ito
摘要： In a switching power supply device, a snubber circuit includes a snubber capacitor, a FET, and a snubber inductor. The snubber capacitor stores therein surge power due to a reverse recovery time of FETs. The FET discharges the surge power stored in the snubber capacitor. The snubber inductor is provided in a stage following the FET. The controller controls an actual on-duty at which the FET of the snubber circuit is turned on based on the surge power. The controller can set an on-duty lower limit indicating the lower limit of the actual on-duty. The on-duty lower limit is smaller than the actual on-duty set for the FET in a continuous current mode in which an electric current flowing through the snubber inductor continuously flows and larger than 0.
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公开(公告)号：US10651746B2
公开(公告)日：2020-05-12
申请号：US15803861
申请日：2017-11-06
发明人： Hai-Bin Song , Dao-Fei Xu , Jian Zhou , Le-Yang Yang , Qi Fu , Jin-Fa Zhang
摘要： A converter includes a transformer, a main switch, an active clamping circuit, a synchronous rectifying switch and a processing circuit. The transformer includes a primary winding and a secondary winding. The main switch is coupled to the primary winding. The active clamping circuit clamps the voltage across the main switch when it is OFF. The active clamping circuit includes an auxiliary switch. The synchronous rectifying switch is coupled to the secondary winding. The processing circuit determines whether the rectifying switch is in a main conducting period or a sub conducting period according to a first voltage signal across the rectifying switch and at least one detecting signal from the converter, and generates a driving signal to control the synchronous rectifying switch accordingly.
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公开(公告)号：US10608527B2
公开(公告)日：2020-03-31
申请号：US15995151
申请日：2018-06-01
申请人： I-SHOU UNIVERSITY
发明人： Chun-An Cheng , Er-Yun Chang , Chin-Chih Lai , Man-Tang Chang
摘要： A power supply apparatus for driving a light emitting apparatus is provided. The power supply apparatus includes a lossless snubber circuit and a power converting circuit. The lossless snubber circuit has a first diode, a first inductor and a second diode coupled in series between an input end and a first reference end, and has a first capacitor coupled between the first diode and a second reference end. The power converting circuit has a switch, a transformer and a second indictor. The switch is coupled between the first and second reference ends, and is turned on or off according to a control signal. The second inductor is coupled to a first side of the transformer in parallel.
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公开(公告)号：US10587183B2
公开(公告)日：2020-03-10
申请号：US16266723
申请日：2019-02-04
发明人： Bernhard Lehmeyer , Amine Mezghani , Josef Nossek
摘要： An electronic amplifier for amplifying an input signal has a branching node, a supply branch, a balance branch, an auxiliary branch and a load branch. All of the branches are connected in parallel to each other relative to the branching node and a reference potential. The supply branch supplies a DC voltage to the branching node. The balance branch absorbs and/or storing electric energy. A current supply device supplies a DC current. The control switch, the current valve and the current source are in different branches. The control switch, in a pass current state, establishes a current flow from the supply branch into either the auxiliary branch or the balance branch. In the block current state, current flows from the current supply device to the balancing device. The supply, balance and auxiliary branches provide an amplified signal to the load, controlled only by the input signal at the control switch.
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公开(公告)号：US10574149B2
公开(公告)日：2020-02-25
申请号：US15992215
申请日：2018-05-30
申请人： OSRAM GmbH
发明人： Francesco Angelin
摘要： A converter circuit, comprising: a supply node and an output node of the converter circuit, a half-bridge arrangement coupled to the supply node and including a pair of electronic switches alternatively switchable between conductive and non-conductive states with a drive node therebetween, a transformer with a primary winding driven by the drive node and a secondary winding including two portions with a center tap node coupled to the output node of the converter circuit and an inductive component. The inductive component including two magnetically coupled winding halves with a respective center tap node, the inductive component being coupled to the ends of the secondary winding of the transformer with the respective center tap node coupled to the output node of the converter circuit.
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公开(公告)号：US10574132B2
公开(公告)日：2020-02-25
申请号：US16029421
申请日：2018-07-06
发明人： Chris M. Young
IPC分类号： H02M1/088 , H02M1/32 , H02M1/14 , H02M3/158 , G01R19/165 , H02M1/34 , H02M1/08 , H02M3/156 , H02M3/335 , H02M1/00
摘要： Some apparatus and associated methods relate to conductivity modulation apparatus for active operations with an inductive element in a packaged circuit module formed with a bypass switch for configuration in parallel with an inductor. In an illustrative example, the bypass switch may be a controllable bidirectional switch formed of, for example, two anti-series connected MOSFETs. In some embodiments, the packaged module may include a main switch and/or a freewheeling rectifier (e.g., synchronous rectifier) operable as a buck-derived switched mode power supply. The bypass switch may, in operation, selectively circulate inductor current through the bypass switch, for example, to control the timing and/or quantity of energy transfer from the inductor to a load. In some implementations, the bypass switch may be operated, for example, to dynamically modulate conductivity across the terminals of an inductor in a buck-derived switched mode power supply to enhance circuit performance in numerous operational modes.
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公开(公告)号：US10545549B2
公开(公告)日：2020-01-28
申请号：US15583181
申请日：2017-05-01
申请人： Silanna Asia Pte Ltd
发明人： Mete Erturk , Karim Arabi , Seyed-Behzad Mahdavikhah-Mehrabad , Aleksandar Radic , Sheikh Mohammad Ahsanuzzaman
摘要： A power adapter for supplying electrical power to a mobile device. The power adapter may have a processor and an interface for data communication and power transmission with the mobile device, memory internal to a casing of the power adapter, and an AC/DC power conversion circuit electrically coupled to the processor. The AC/DC power conversion circuit is configured to receive an AC power input and convert the AC power input to a DC power output over the interface for the mobile device. The processor is configured to: recognize a load associated with the mobile device connected to the DC power output; set the DC power output based on the load; receive backup data from the mobile device over the interface; and store the backup data from the mobile device within the memory.
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公开(公告)号：US20200007048A1
公开(公告)日：2020-01-02
申请号：US16569924
申请日：2019-09-13
申请人： Silanna Asia Pte Ltd
发明人： Aleksandar Radic
摘要： A power converter includes an input side to receive an input voltage, and an output side to provide an output voltage, a main switch, a controller, a transformer having a primary winding that couples the main switch to the input side, an active clamp switch coupled to the input side by an active clamp capacitor, and an active clamp controller circuit. The active clamp controller circuit includes a sampling circuit to generate a sampled main switch voltage, a delay circuit to generate a delayed sampled main switch voltage, a voltage comparison circuit, and an active clamp switch controller circuit configured to i) enable the active clamp switch based on a first comparison between the sampled main switch voltage and the delayed sampled main switch voltage, and ii) disable the active clamp switch based on a second comparison between the sampled main switch voltage and the delayed sampled main switch voltage.
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80.发明授权公开(公告)号：US10516338B2
公开(公告)日：2019-12-24
申请号：US16189800
申请日：2018-11-13
发明人： Xiaowu Gong , Gerald Deboy , Yong Siang Teo , Zan Wang
IPC分类号： H02M3/335 , G01R19/165 , H02M1/00 , H02M1/34
摘要： Voltage converter controllers, voltage converters and methods are discussed regarding the adjustment of an on-time of an auxiliary switch of a voltage converter. First and second voltages are measured before a primary switch of the voltage converter is turned on and while the primary switch is turned on, and the on-time is adjusted based on the voltages.
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