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公开(公告)号：US20150124489A1
公开(公告)日：2015-05-07
申请号：US14074246
申请日：2013-11-07
Applicant: FutureWei Technologies, Inc.
Inventor： Heping Dai , Xujun Liu , Liming Ye , Daoshen Chen
CPC classification number: H02M3/335 , H02M3/3353 , H02M3/33538 , H02M3/33576 , H02M2001/0009 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
Abstract: An apparatus comprises a magnetic device coupled to an inductor-inductor-capacitor (LLC) resonant converter, an ac current sensing circuit coupled to the magnetic device, an average current sensing circuit coupled to the ac current sensing circuit and a reference voltage source coupled to the average current sensing circuit, wherein the reference voltage source is configured such that a magnitude of an average signal from the average current sensing circuit is greater than a voltage level of the reference voltage source.
Abstract translation: 一种装置包括耦合到电感器 - 电感器 - 电容器（LLC）谐振转换器的磁性装置，耦合到磁性装置的交流电流检测电路，耦合到交流电流检测电路的平均电流检测电路和耦合到 平均电流感测电路，其中参考电压源被配置为使得来自平均电流感测电路的平均信号的幅度大于参考电压源的电压电平。
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公开(公告)号：US20150109824A1
公开(公告)日：2015-04-23
申请号：US14056532
申请日：2013-10-17
Applicant: FutureWei Technologies, Inc.
Inventor： Daoshen Chen , Heping Dai , Xujun Liu , Zhihua Liu , Liming Ye , Dianbo Fu , Ce Liu , Bing Cai
IPC: H02M3/335
CPC classification number: H02M3/33507 , H02M1/14 , H02M3/156 , H02M3/22 , H02M3/325 , H02M3/33523 , H02M3/33569 , H02M3/33576 , H02M3/33592 , H02M3/337 , H02M3/3376 , H02M2001/0009 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
Abstract: A converter comprises an input stage coupled to a power source, wherein the input stage comprises a plurality of power switches, a resonant tank coupled to the plurality of power switches, a transformer coupled to the resonant tank, an output stage coupled to the transformer, an efficiency point tracking indicator coupled to the converter, a detector coupled to the efficiency point tracking indicator and a control circuit configured to receive an efficiency point tracking signal from the detector and adjust a switching frequency of the power switches based upon the efficiency point tracking signal.
Abstract translation: A转换器包括耦合到电源的输入级，其中所述输入级包括多个功率开关，耦合到所述多个功率开关的谐振槽，耦合到所述谐振回路的变压器，耦合到所述变压器的输出级， 耦合到转换器的效率点跟踪指示器，耦合到效率点跟踪指示器的检测器和配置成从检测器接收效率点跟踪信号的控制电路，并且基于效率点跟踪信号调整功率开关的开关频率 。
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公开(公告)号：US10340807B2
公开(公告)日：2019-07-02
申请号：US15838745
申请日：2017-12-12
Applicant: Futurewei Technologies, Inc.
Inventor： Daoshen Chen , Heping Dai , Xujun Liu , Liming Ye , Dianbo Fu
Abstract: A device comprises a gate drive bridge coupled between a bias voltage of a power converter and ground and a transformer connected to the gate drive bridge, wherein the transformer comprises a primary winding connected to two legs of the gate drive bridge respectively and a plurality of secondary windings configured to generate gate drive signals for low side switches, high side switches and secondary switches of the power converter.
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Patent Agency Ranking
公开(公告)号：US09876435B2
公开(公告)日：2018-01-23
申请号：US15297818
申请日：2016-10-19
Applicant: Futurewei Technologies, Inc.
Inventor： Daoshen Chen , Heping Dai , Xujun Liu , Liming Ye , Dianbo Fu
CPC classification number: H02M3/33546 , H02M1/08 , H02M1/088 , H02M1/14 , H02M1/36 , H02M3/3353 , H02M3/33553 , H02M3/33576 , H02M3/33592 , H02M3/3385 , H02M7/4807 , H02M2001/0006 , H02M2001/0058 , H02M2007/4818 , Y02B70/1433 , Y02B70/1441 , Y02B70/1491 , Y02P80/112
Abstract: A method comprises providing a resonant converter comprising a switching network comprising a first high-side switch, a second high-side switch, a first low-side switch and a second low-side switch, a resonant tank coupled between the switching network and a transformer and a rectifier coupled to a secondary side of the transformer, coupling a driver to the switching network and the rectifier, wherein the driver includes a first winding coupled to the rectifier, a second winding coupled to the first high-side switch and a third winding coupled to the second high-side switch, detecting a signal indicating a soft switching process of the driver and adjusting a resonant frequency of the driver until the resonant frequency of the driver approximately matches a switch frequency of the resonant converter.
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15.发明授权公开(公告)号：US09467054B2
公开(公告)日：2016-10-11
申请号：US14074246
申请日：2013-11-07
Applicant: FutureWei Technologies, Inc.
Inventor： Heping Dai , Xujun Liu , Liming Ye , Daoshen Chen
CPC classification number: H02M3/335 , H02M3/3353 , H02M3/33538 , H02M3/33576 , H02M2001/0009 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
Abstract: An apparatus comprises a magnetic device coupled to an inductor-inductor-capacitor (LLC) resonant converter, an ac current sensing circuit coupled to the magnetic device, an average current sensing circuit coupled to the ac current sensing circuit and a reference voltage source coupled to the average current sensing circuit, wherein the reference voltage source is configured such that a magnitude of an average signal from the average current sensing circuit is greater than a voltage level of the reference voltage source.
Abstract translation: 一种装置包括耦合到电感器 - 电感器 - 电容器（LLC）谐振转换器的磁性装置，耦合到磁性装置的交流电流检测电路，耦合到交流电流检测电路的平均电流检测电路和耦合到 平均电流感测电路，其中参考电压源被配置为使得来自平均电流感测电路的平均信号的幅度大于参考电压源的电压电平。
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公开(公告)号：US09350260B2
公开(公告)日：2016-05-24
申请号：US14074194
申请日：2013-11-07
Applicant: FutureWei Technologies, Inc.
Inventor： Heping Dai , Daoshen Chen , Xujun Liu , Liming Ye
CPC classification number: H02M3/3376 , H02M1/36 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491 , Y02P80/112
Abstract: A method comprises providing a resonant converter comprising a switching network comprising a plurality of switches, a resonant tank coupled between the switching network and a transformer, wherein the resonant tank comprises a series resonant inductor coupled to a switching network and the transformer and a series resonant capacitor coupled to the switching network and the transformer and a driver having an adjustable bias voltage and in response to a startup process of the resonant converter, configuring the switching network to operate a switching frequency higher than a resonant frequency of the resonant tank.
Abstract translation: 一种方法包括提供一种包括交换网络的谐振转换器，该交换网络包括多个开关，耦合在所述开关网络和变压器之间的谐振箱，其中所述谐振箱包括耦合到开关网络的串联谐振电感器和所述变压器以及串联谐振 耦合到开关网络和变压器的电容器和具有可调偏压的驱动器，并且响应于谐振转换器的启动过程，配置开关网络以操作高于谐振回路的谐振频率的开关频率。
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公开(公告)号：US20160141960A1
公开(公告)日：2016-05-19
申请号：US14548106
申请日：2014-11-19
Applicant: Futurewei Technologies, Inc.
Inventor： Jinbo Huang , Xujun Liu , Dianbo Fu , Liming Ye , Heping Dai , Daoshen Chen
IPC: H02M3/335
CPC classification number: H02M3/33507 , H02M3/158 , H02M3/1582 , H02M2001/0009 , H02M2001/0058 , Y02B70/1425 , Y02B70/1433 , Y02B70/1491
Abstract: A converter comprises a switch network coupled to a power source, wherein the switch network comprises a plurality of power switches, a magnetic device coupled to the switch network, a detector coupled to the magnetic device through a magnetic coupling and a control circuit configured to receive a zero voltage switching signal from the detector and adjust gate drive signals of the power switches based upon the zero voltage switching signal.
Abstract translation: A转换器包括耦合到电源的开关网络，其中开关网络包括多个电源开关，耦合到开关网络的磁性装置，通过磁耦合耦合到磁性装置的检测器和被配置为接收 来自检测器的零电压切换信号，并且基于零电压切换信号调节功率开关的栅极驱动信号。
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公开(公告)号：US20150131329A1
公开(公告)日：2015-05-14
申请号：US14077406
申请日：2013-11-12
Applicant: FutureWei Technologies, Inc.
Inventor： Daoshen Chen , Heping Dai , Xujun Liu , Liming Ye , Dianbo Fu
IPC: H02M3/335
CPC classification number: H02M3/33546 , H02M1/08 , H02M1/088 , H02M1/14 , H02M1/36 , H02M3/3353 , H02M3/33553 , H02M3/33576 , H02M3/33592 , H02M3/3385 , H02M7/4807 , H02M2001/0006 , H02M2001/0058 , H02M2007/4818 , Y02B70/1433 , Y02B70/1441 , Y02B70/1491 , Y02P80/112
Abstract: An apparatus comprises a bridge coupled between a bias voltage and ground, wherein the bridge comprises a first switch and a second switch connected in series and coupled between the bias voltage and ground and a third switch and a fourth switch connected in series and coupled between the bias voltage and ground, a resonant device coupled to the bridge, wherein the resonant device comprises a fixed capacitance, a gate capacitance and a magnetizing inductance, a transformer coupled to the resonant device, wherein the transformer comprises a primary winding and a plurality of secondary windings.
Abstract translation: 一种装置包括耦合在偏置电压和接地之间的桥，其中桥包括串联连接并耦合在偏置电压和地之间的第一开关和第二开关，以及串联耦合在第三开关和第四开关之间的第三开关和第四开关， 偏置电压和接地，耦合到桥的谐振装置，其中所述谐振装置包括固定电容，栅极电容和磁化电感，耦合到所述谐振装置的变压器，其中所述变压器包括初级绕组和多个次级绕组 绕组。
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