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公开(公告)号：US20160149501A1
公开(公告)日：2016-05-26
申请号：US14548567
申请日：2014-11-20
Applicant: Futurewei Technologies, Inc.
Inventor： Heping Dai , Liming Ye , Dianbo Fu , Daoshen Chen
IPC: H02M3/335
CPC classification number: H02M3/3372 , H02M3/07 , H02M3/1582 , H02M3/18 , H02M3/33576 , H02M3/337 , H02M2001/0058 , H02M2001/007 , Y02B70/1433 , Y02B70/1491
Abstract: An apparatus comprises an isolated power converter coupled between an input dc power source, wherein the isolated power converter comprises a first switch network coupled to a first transformer winding through a first resonant tank and a second switch network coupled to a second transformer winding through a second resonant tank and a dc/dc converter coupled to the second switch network.
Abstract translation: 一种装置包括耦合在输入直流电源之间的隔离功率转换器，其中所述隔离功率转换器包括耦合到通过第一谐振储能器的第一变压器绕组的第一开关网络和通过第二谐振回路耦合到第二变压器绕组的第二开关网络 谐振箱和耦合到第二开关网络的dc / dc转换器。
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公开(公告)号：US09337743B2
公开(公告)日：2016-05-10
申请号：US14052583
申请日：2013-10-11
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.
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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公开(公告)号：US09281752B2
公开(公告)日：2016-03-08
申请号：US14071446
申请日：2013-11-04
Applicant: FutureWei Technologies, Inc.
Inventor： Dianbo Fu , Heping Dai , Liming Ye , Daoshen Chen
CPC classification number: H02M3/33546 , H02M3/33576 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
Abstract: A method comprises providing a resonant converter, wherein the resonant converter comprises an input switch network coupled to a power source, wherein the input switch network comprises a plurality of power switches, a resonant tank coupled to the plurality of power switches, a transformer coupled to the resonant tank and an output stage coupled to the transformer, wherein the output stage comprises a synchronous rectifier formed by a first switch and a second switch, detecting a drain voltage of the first switch, comparing the drain voltage with a predetermined voltage threshold, wherein the drain voltage is coupled to a negative input of a comparator and the predetermined voltage threshold is coupled to a positive input of the comparator, generating a logic state based upon an output of the comparator and adjusting, by a control circuit, a switching frequency of the resonant converter based upon the logic state.
Abstract translation: 一种方法包括提供谐振转换器，其中所述谐振转换器包括耦合到电源的输入开关网络，其中所述输入开关网络包括多个功率开关，耦合到所述多个功率开关的谐振槽，耦合到 所述谐振槽和耦合到所述变压器的输出级，其中所述输出级包括由第一开关和第二开关形成的同步整流器，检测所述第一开关的漏极电压，将所述漏极电压与预定电压阈值进行比较，其中 漏极电压耦合到比较器的负输入，并且预定电压阈值耦合到比较器的正输入，基于比较器的输出产生逻辑状态，并通过控制电路调整开关频率 基于逻辑状态的谐振转换器。
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公开(公告)号：US09793810B2
公开(公告)日：2017-10-17
申请号：US14850125
申请日：2015-09-10
Applicant: Futurewei Technologies, Inc.
Inventor： Dianbo Fu , Jinbo Huang , Ce Liu , Liming Ye , Heping Dai , Daoshen Chen
IPC: H02M3/158
CPC classification number: H02M3/1582 , H02M2001/0058 , Y02B70/1491
Abstract: A method comprises providing a buck-boost converter comprising a first high-side switch and a first low-side switch connected in series across an input capacitor, a second high-side switch and a second low-side switch connected in series across an output capacitor and an inductor coupled between a common node of the first high-side switch and the first low-side switch, and a common node of the second high-side switch and the second low-side switch, detecting a first voltage resonance waveform across a switch of the buck-boost converter and turning on the switch of the buck-boost converter when the first voltage resonance waveform falls to zero.
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公开(公告)号：US09787200B2
公开(公告)日：2017-10-10
申请号：US15061717
申请日：2016-03-04
Applicant: Futurewei Technologies, Inc.
Inventor： Dianbo Fu , Heping Dai , Liming Ye , Daoshen Chen
CPC classification number: H02M3/33546 , H02M3/33576 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
Abstract: A method comprises detecting a signal representing a drain-to-source voltage of a switch of a synchronous rectifier of an inductor-inductor-capacitor (LLC) resonant converter, comparing the signal with a predetermined threshold, generating a first logic state if the drain-to-source voltage is greater than the predetermined threshold, generating a second logic state if the drain-to-source voltage is less than the predetermined threshold and in response to the first logic state and the second logic state, adjusting a switching frequency of the LLC resonant converter such that the switching frequency moves back and forth across a boundary of body diode conduction, wherein a frequency difference between the switching frequency and a resonant frequency of the LLC resonant converter is less than or equal to one frequency adjustment step.
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Patent Agency Ranking
公开(公告)号：US20170207707A1
公开(公告)日：2017-07-20
申请号：US15477504
申请日：2017-04-03
Applicant: Futurewei Technologies, Inc.
Inventor： Heping Dai , Liming Ye , Dianbo Fu , Daoshen Chen
CPC classification number: H02M3/3372 , H02M3/07 , H02M3/1582 , H02M3/18 , H02M3/33576 , H02M3/337 , H02M2001/0058 , H02M2001/007 , 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 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：US20170040903A1
公开(公告)日：2017-02-09
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.
Abstract translation: 一种方法包括提供包括开关网络的谐振转换器，该开关网络包括第一高侧开关，第二高侧开关，第一低侧开关和第二低侧开关，耦合在开关网络和 变压器和整流器耦合到变压器的次级侧，将驱动器耦合到开关网络和整流器，其中驱动器包括耦合到整流器的第一绕组，耦合到第一高侧开关的第二绕组和第三绕组 绕组耦合到第二高侧开关，检测指示驱动器的软开关处理的信号，并调整驱动器的谐振频率，直到驱动器的谐振频率近似于谐振转换器的开关频率。
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公开(公告)号：US20160365790A1
公开(公告)日：2016-12-15
申请号：US14739827
申请日：2015-06-15
Applicant: Futurewei Technologies, Inc.
Inventor： Liming Ye , Jinbo Huang , Heping Dai , Dianbo Fu , Daoshen Chen
IPC: H02M3/158
CPC classification number: H02M3/1582 , H02M2001/0025 , H02M2001/0032 , H02M2001/0058 , Y02B70/1425 , Y02B70/1491 , Y02B70/16
Abstract: A method comprises generating a first ramp signal and a second ramp signal for controlling a buck converter portion and a boost converter portion of a buck-boost converter respectively, comparing the first ramp signal and the second ramp signal to a control signal, controlling the buck converter portion using the comparing the first ramp signal to the control signal and the boost converter portion using the comparing the second ramp signal to the control signal, comparing a current flowing through the inductor to a current threshold and terminating a switching cycle based upon the comparing the current flowing through the inductor to the current threshold.
Abstract translation: 一种方法包括：分别控制降压转换器部分和降压 - 升压转换器的升压转换器部分的第一斜坡信号和第二斜坡信号，将第一斜坡信号和第二斜坡信号与控制信号进行比较，控制降压 转换器部分，其使用将所述第二斜坡信号与所述控制信号进行比较来比较所述第一斜坡信号与所述控制信号和所述升压转换器部分，将流过所述电感器的电流与电流阈值进行比较，并基于所述比较结束开关周期 电流流过电感到电流阈值。
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公开(公告)号：US09479073B2
公开(公告)日：2016-10-25
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
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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公开(公告)号：US20160294294A1
公开(公告)日：2016-10-06
申请号：US14676515
申请日：2015-04-01
Applicant: Futurewei Technologies, Inc.
Inventor： Liming Ye , Heping Dai , Dianbo Fu , Daoshen Chen
IPC: H02M3/335
CPC classification number: H02M3/33592 , H02M2001/0058 , Y02B70/1433 , Y02B70/1475 , Y02B70/1491
Abstract: A method comprises determining an operating mode based upon an input voltage and an output voltage of a resonant converter, wherein the resonant converter comprises a switch network coupled to an input dc power source, a resonant tank coupled to the switch network and a transformer coupled between the resonant tank and a secondary rectifier, wherein the secondary rectifier is a full-bridge rectifier, configuring the switch network to operate at a buck converter mode in response to a first input voltage and configuring the secondary rectifier to operate at a boost converter mode in response to a second input voltage, wherein the first voltage is higher than the output voltage and the second voltage is lower than the output voltage.
Abstract translation: 一种方法包括基于谐振转换器的输入电压和输出电压来确定操作模式，其中所述谐振转换器包括耦合到输入直流电源的开关网络，耦合到所述开关网络的谐振箱和耦合在所述开关网络 所述谐振回路和次级整流器，其中所述次级整流器是全桥整流器，将所述开关网络配置为响应于第一输入电压而在降压转换器模式下工作，并且将所述次级整流器配置为以升压转换器模式工作 响应于第二输入电压，其中所述第一电压高于所述输出电压，并且所述第二电压低于所述输出电压。
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