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公开(公告)号：US20190052189A1
公开(公告)日：2019-02-14
申请号：US16076444
申请日：2017-01-18
发明人： Hirotaka OOMORI
CPC分类号： H02M7/537 , H01L25/07 , H01L25/18 , H01L2224/48091 , H01L2224/48247 , H01L2224/49113 , H02M1/32 , H02M1/34 , H02M7/003 , H02M7/48 , H02M7/5387 , H02M2001/348 , H01L2924/00014
摘要： A semiconductor module according to an embodiment includes an insulating substrate having a power conversion circuit mounted thereon, a first transistor constituting an upper arm, a second transistor constituting a lower arm, a first input interconnection pattern coupled to a positive-side input terminal, a second input interconnection pattern coupled to a negative-side input terminal, an output interconnection pattern coupled to an output terminal, and an absorbing device configured to absorb surge voltage, wherein the first input interconnection pattern includes a first-transistor mounting area on which the first transistor is mounted, wherein the output interconnection pattern includes a second-transistor mounting area on which the second transistor is mounted, wherein the second input interconnection pattern includes an absorbing-device connecting area disposed between the first and second transistor mounting areas, and wherein the absorbing-device connecting area is electrically coupled to the first-transistor mounting area through the absorbing device.
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公开(公告)号：US20190028021A1
公开(公告)日：2019-01-24
申请号：US16081440
申请日：2017-03-01
发明人： Javier Francisco CHIVITE-ZABALZA , David Reginald TRAINER , Jonathan Christopher NICHOLLS , Konstantin VERSHININ , Ikenna Bruce EFIKA , Francisco Jose MORENO MUNOZ , John Lewis OUTRAM , Rajaseker Reddy GINNAREDDY
CPC分类号： H02M1/34 , H02J3/36 , H02J7/345 , H02M1/32 , H02M7/49 , H02M7/797 , H02M2001/325 , H02M2001/348 , H02M2007/4835 , Y02E60/60
摘要： Fault protection of a voltage source converter is provided. An apparatus has a chain-link circuit in series with a director switch. The chain-link circuit includes cells including an energy storage element and cell switching elements connected with anti-parallel diodes. Each cell switching element has a cell switching element controller. The director switch includes director switch units, each having a director switching element and a director switch unit controller. Each cell switching element controller monitors for a fault current and turns-off its associated cell switching element and reports a fault event to a fault controller. Each director switch unit controller monitors for a fault current and reports a fault event to the fault controller but the director switch unit control keeps its associated director switching element turned-on. The fault controller monitors for reports of fault events to order the cell switching elements of at least some of the cells to turn-off.
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公开(公告)号：US10181782B2
公开(公告)日：2019-01-15
申请号：US15892724
申请日：2018-02-09
发明人： Kun-Yu Lin , Tzu-Chen Lin , Wei-Hsu Chang , Ta-Yung Yang
摘要： A flyback power converter circuit includes: a transformer including a primary side winding coupled to an input power and a secondary side winding coupled to an output node, wherein the input power includes an input voltage; a primary side switch coupled to the primary side winding for controlling the input power to generate an output power on the output node through the secondary side winding, wherein the output power includes an output voltage; a clamping circuit including an auxiliary switch and an auxiliary capacitor connected in series to form an auxiliary branch which is connected with the primary side winding in parallel; and a conversion control circuit for adjusting an ON time of the auxiliary switch according to at least one of a current related signal, the input voltage, and the output voltage, such that the primary side switch is zero voltage switching when turning ON.
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公开(公告)号：US10177668B2
公开(公告)日：2019-01-08
申请号：US15677007
申请日：2017-08-14
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 clamp circuit, and a control circuit. The transformer includes a primary winding and a secondary winding, and is configured to receive an input voltage and output an output voltage to a load. The main switch is coupled between the primary winding and a primary ground terminal. The active clamp circuit includes an auxiliary switch and a clamp capacitor. The auxiliary switch is coupled to the clamp capacitor in series, and the active clamp circuit is coupled in parallel to the two terminals of the primary winding or the main switch, and is configured to clamp the voltage across the main switch when it is OFF. The control circuit outputs an auxiliary switch control signal to turn on the auxiliary switch when the voltage across the main switch is at its first peak of the resonant voltage.
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公开(公告)号：US10177643B2
公开(公告)日：2019-01-08
申请号：US15532511
申请日：2015-12-03
摘要： A semiconductor switching circuit, for use in a HVDC power converter, comprising: a main semiconductor switching element, including first and second connection terminals between which current flows from the first connection terminal to the second connection terminal and an auxiliary semiconductor switching element electrically connected between the first and second connection terminals thereof, and a control unit, operatively connected to auxiliary semiconductor switching element and programmed to control the switching element to create an alternative current path between the first and second connection terminals by at least two of: a fully-on mode in which the switching element is operated at its maximum rated base current or gate voltage; a pulsed switched mode in which the switching element is turned on and off; and an active mode in which the switching element is operated with a continuously variable base current or gate voltage.
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公开(公告)号：US20190007041A1
公开(公告)日：2019-01-03
申请号：US16011909
申请日：2018-06-19
发明人： TOBIAS ERLBACHER , Stefan Matlok
IPC分类号： H03K17/16 , H02M1/34 , H03K17/0814 , H01L29/78
CPC分类号： H03K17/687 , H01L27/0727 , H01L28/20 , H01L29/0821 , H01L29/407 , H01L29/732 , H01L29/7325 , H01L29/7408 , H01L29/7803 , H01L29/8083 , H01L29/945 , H02M2001/322 , H02M2001/344
摘要： The present invention relates to an electrical circuit arrangement with an active discharge circuit including at least one electrical switching element, by means of which the circuit arrangement can be discharged in controlled manner. The circuit arrangement includes a RC snubber element with capacitor and resistor for damping voltage or current peaks in the circuit arrangement, wherein the electrical switching element is integrated in the RC snubber element and connected in parallel to the capacitor of the RC snubber. This enables the discharge circuit to be designed in a manner that is economical in terms of space and cost. The discharge circuit uses the heat sink for the RC snubber element and therefore does not need any additional heat dissipation systems.
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公开(公告)号：US10135344B2
公开(公告)日：2018-11-20
申请号：US15209184
申请日：2016-07-13
申请人： Silanna Asia Pte Ltd
摘要： The combined voltage regulator and snubber circuit generally has a voltage regulator device in parallel with the energy storage element of the snubber circuit operatively connectable in series with a leakage inductance current path; the leakage inductance being part of a magnetic component utilized in a switch-mode power supply having an input voltage source, controllable semiconductor switches, freewheeling semiconductor switches, feedback controller, reactive energy storage components and a load; the voltage regulator generally providing constant or variable voltage to the gate driver of the controllable semiconductor and/or feedback controller; the snubber circuit generally recycling leakage inductance energy to the input capacitor of a neighboring cell in a multi-cell stacked converter.
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公开(公告)号：US10116205B2
公开(公告)日：2018-10-30
申请号：US14901251
申请日：2014-07-02
发明人： Koichi Arisawa , Takuya Shimomugi , Takashi Yamakawa , Keisuke Uemura , Noriyuki Matsubara , Shinsaku Kusube , Kenta Yuasa , Akihiro Tsumura
摘要： Provided is a power conversion device configured to convert electric power from a power source to a load, including: a boosting device including a boost rectification unit configured to prevent backflow of a current from the load side to the power source side, the boosting device being configured to change a voltage of power from the power source to a predetermined voltage based on a drive signal; a commutation device configured to perform commutation operation in which a current flowing through the boosting device is caused to flow into an other path based on a commutation signal; and a signal generating module device configured as a module to generate and send an output signal based on an input signal that is input thereto. The input signal has an on-pulse width greater than a length of time where the output signal generated by the signal generating module device is turned on.
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公开(公告)号：US10116202B2
公开(公告)日：2018-10-30
申请号：US15195289
申请日：2016-06-28
发明人： Xiaopeng Wang , Kaiwei Yao
摘要： A DC/DC power supply system includes a primary side and a secondary side to generate an output DC voltage from an input DC voltage. The power supply also includes adaptive clamping circuitry that generates an adjustable clamping voltage and/or current to limit a Vds breakdown voltage for switches of the secondary side.
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100.发明授权公开(公告)号：US10110118B2
公开(公告)日：2018-10-23
申请号：US15509404
申请日：2015-09-06
摘要： An apparatus (400A, 400B, 400C, 400D, 500A, 500B, 800) supplies power to an output thereof. The apparatus includes: an isolation transformer (110) and a rectifier (120). The isolation transformer has a parasitic capacitance (Cp) between one of its input terminals (1S/1F) and one of its output terminals (2S/2F). The rectifier has a pair of input terminals connected to the output terminals of the isolation transformer, and a pair of output terminals connected across the apparatus' output. The rectifier includes a plurality of diodes (D1/D2/D3/D4) connected in a bridge. The apparatus also includes a compensation device for compensating for an increase in an output voltage across the output of the apparatus due to a charge pump effect of the parasitic capacitance. The compensation device includes at least one compensation capacitor (410, 510/520, 810/812) connected across one of the diodes of the bridge.
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