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公开(公告)号：US20160254757A1
公开(公告)日：2016-09-01
申请号：US15150138
申请日：2016-05-09
Applicant: Futurewei Technologies, Inc.
Inventor： Heping Dai , Daoshen Chen , Dianbo Fu
CPC classification number: H02M3/33546 , H02M1/08 , H02M3/285 , H02M3/3353 , H02M3/33553 , H02M3/33576 , H02M2001/0009 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491 , Y02P80/112
Abstract: A converter comprises an input stage coupled to a power source, wherein the input stage comprises a plurality of power switches, a first resonant tank coupled to the input stage, wherein the first resonant tank is of a first Q value, a second resonant tank coupled to the input stage, wherein the second resonant tank is of a second Q value, a transformer coupled to the input stage through the first resonant tank and the second resonant tank and an output stage coupled to the transformer.
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公开(公告)号：US20160094135A1
公开(公告)日：2016-03-31
申请号：US14500486
申请日：2014-09-29
Applicant: Futurewei Technologies, Inc.
Inventor： Heping Dai , Dianbo Fu , Liming Ye , Daoshen Chen
IPC: H02M3/335
CPC classification number: H02M3/33576 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
Abstract: An apparatus comprises an isolated power converter coupled to an input dc power source, wherein the isolated power converter comprises a primary switching network operating at a fixed switching frequency, a secondary resonant tank including a dc blocking capacitor and a rectifier having two input terminals coupled to the secondary resonant tank, an output capacitor coupled between a first output terminal of the rectifier and a load and a dc/dc converter coupled between a second output terminal of the rectifier and the load.
Abstract translation: 一种装置包括耦合到输入直流电源的隔离功率转换器，其中所述隔离功率转换器包括以固定开关频率工作的初级开关网络，包括直流隔离电容器的次级谐振箱和具有耦合到 次级谐振回路，耦合在整流器的第一输出端和负载之间的输出电容器和耦合在整流器的第二输出端子与负载之间的dc / dc转换器。
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公开(公告)号：US20150124488A1
公开(公告)日：2015-05-07
申请号：US14074194
申请日：2013-11-07
Applicant: FutureWei Technologies, Inc.
Inventor： Heping Dai , Daoshen Chen , Xujun Liu , Liming Ye
IPC: H02M3/335
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：US20150124487A1
公开(公告)日：2015-05-07
申请号：US14071360
申请日：2013-11-04
Applicant: FutureWei Technologies, Inc.
Inventor： Dianbo Fu , Heping Dai , Liming Ye , Daoshen Chen
IPC: H02M3/335
CPC classification number: H02M3/33507 , H02M3/33569 , H02M2001/0058 , H02M2007/4818 , Y02B70/1433 , Y02B70/1441 , Y02B70/1491
Abstract: An apparatus comprises a first series resonant inductor coupled to a switching network and a transformer, a first series resonant capacitor coupled to the switching network and the transformer, a first parallel inductor coupled to the switching network through the first series resonant inductor and the first series resonant capacitor, a resonant frequency adjusting device coupled to the switching network and the transformer and a switch connected in series with the resonant frequency adjusting device.
Abstract translation: 一种装置包括耦合到开关网络和变压器的第一串联谐振电感器，耦合到开关网络和变压器的第一串联谐振电容器，通过第一串联谐振电感器耦合到开关网络的第一并联电感器和第一系列 谐振电容器，耦合到开关网络和变压器的谐振频率调节装置以及与谐振频率调节装置串联连接的开关。
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公开(公告)号：US20150103561A1
公开(公告)日：2015-04-16
申请号：US14052583
申请日：2013-10-11
Applicant: FutureWei Technologies, Inc.
Inventor： Heping Dai , Daoshen Chen , Dianbo Fu
IPC: H02M3/335
CPC classification number: H02M3/33546 , H02M1/08 , H02M3/285 , H02M3/3353 , H02M3/33553 , H02M3/33576 , H02M2001/0009 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491 , Y02P80/112
Abstract: A converter comprises an input stage coupled to a power source, wherein the input stage comprises a plurality of power switches, a first resonant tank coupled to the input stage, wherein the first resonant tank is of a first Q value, a second resonant tank coupled to the input stage, wherein the second resonant tank is of a second Q value, a transformer coupled to the input stage through the first resonant tank and the second resonant tank and an output stage coupled to the transformer.
Abstract translation: A转换器包括耦合到电源的输入级，其中输入级包括多个功率开关，耦合到输入级的第一谐振回路，其中第一谐振回路具有第一Q值，第二谐振回路耦合 到所述输入级，其中所述第二谐振回路具有第二Q值，通过所述第一谐振回路耦合到所述输入级的变压器和所述第二谐振回路以及耦合到所述变压器的输出级。
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Patent Agency Ranking
公开(公告)号：US10554141B2
公开(公告)日：2020-02-04
申请号：US15477504
申请日：2017-04-03
Applicant: Futurewei Technologies, Inc.
Inventor： Heping Dai , Liming Ye , Dianbo Fu , Daoshen Chen
Abstract: An apparatus comprises an isolated power converter coupled to an input dc power source, wherein the isolated power converter comprises a first switch network coupled to a first transformer winding and a second switch network coupled to a second transformer winding and a non-isolated power converter coupled to the second switch network of the isolated power converter, wherein a current flowing through the non-isolated power converter is a fraction of a current flowing through the isolated power converter.
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公开(公告)号：US10554130B2
公开(公告)日：2020-02-04
申请号：US16212943
申请日：2018-12-07
Applicant: Futurewei Technologies, Inc.
Inventor： Liming Ye , Jinbo Huang , Heping Dai , Dianbo Fu , Daoshen Chen
Abstract: A method includes generating a first ramp signal for controlling a first portion of a converter, generating a second ramp signal for controlling a second portion of the converter, controlling a state of a first switch of the first portion through comparing the first ramp signal to a control signal and a state of a first switch of the second portion through comparing the second ramp signal to the control signal and determining a switching cycle of the converter through comparing a current flowing through an inductor of the converter to a threshold.
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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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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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公开(公告)号：US09484821B2
公开(公告)日：2016-11-01
申请号：US14071360
申请日：2013-11-04
Applicant: FutureWei Technologies, Inc.
Inventor： Dianbo Fu , Heping Dai , Liming Ye , Daoshen Chen
CPC classification number: H02M3/33507 , H02M3/33569 , H02M2001/0058 , H02M2007/4818 , Y02B70/1433 , Y02B70/1441 , Y02B70/1491
Abstract: An apparatus comprises a first series resonant inductor coupled to a switching network and a transformer, a first series resonant capacitor coupled to the switching network and the transformer, a first parallel inductor coupled to the switching network through the first series resonant inductor and the first series resonant capacitor, a resonant frequency adjusting device coupled to the switching network and the transformer and a switch connected in series with the resonant frequency adjusting device.
Abstract translation: 一种装置包括耦合到开关网络和变压器的第一串联谐振电感器，耦合到开关网络和变压器的第一串联谐振电容器，通过第一串联谐振电感器耦合到开关网络的第一并联电感器和第一系列 谐振电容器，耦合到开关网络和变压器的谐振频率调节装置以及与谐振频率调节装置串联连接的开关。
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