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

IPC: H02M3/335 ,  H02M1/00

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。

公开(公告)号：US09461554B2

公开(公告)日：2016-10-04

申请号：US14502196

申请日：2014-09-30

Applicant: Futurewei Technologies, Inc.

Inventor： Dianbo Fu ,  Liming Ye ,  Heping Dai ,  Daoshen Chen

IPC: H02M3/158 ,  H02M3/335 ,  H02M1/00

CPC classification number: H02M3/33584 ,  H02M3/1582 ,  H02M2001/0058 ,  H02M2001/007 ,  Y02B70/1425 ,  Y02B70/1433 ,  Y02B70/1491

Abstract: A converter comprises a non-isolated stage coupled to an input dc power source, wherein the non-isolated stage is configured to operate at a buck converter mode in response to a first input voltage and operate at a boost converter mode in response to a second input voltage, a resonant stage coupled between the non-isolated stage and a load, wherein the resonant stage is configured to operate at a resonant mode and a capacitor coupled between the non-isolated stage and the resonant stage.

Abstract translation: A转换器包括耦合到输入直流电源的非隔离级，其中所述非隔离级被配置为响应于第一输入电压在降压转换器模式下操作并响应于第二输入电压在升压转换器模式下操作 输入电压，耦合在所述非隔离级与负载之间的谐振级，其中所述谐振级被配置为在谐振模式下工作，以及耦合在所述非隔离级与所述谐振级之间的电容器。

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

IPC: H02M3/335 ,  H02M3/337 ,  H02M1/36 ,  H02M1/00

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。

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。

公开(公告)号：US09178440B2

公开(公告)日：2015-11-03

申请号：US14033060

申请日：2013-09-20

Applicant: FutureWei Technologies, Inc.

Inventor： Daoshen Chen ,  Heping Dai

IPC: H02M3/335 ,  H02M3/337 ,  H02J1/00 ,  H02M7/48

CPC classification number: H02M3/3376 ,  H02M2007/4815 ,  Y02B70/1433 ,  Y02B70/1441

Abstract: A method for improving a power converter's efficiency comprises providing a resonant converter, wherein the resonant converter comprises an input coupled to a power source, a plurality of power switches coupled to the input, a resonant tank coupled to the plurality of power switches and a controller coupled to the power switches and generating a plurality of gate drive signals for the power switches, wherein the gate drive signals are arranged such that a switching frequency of the resonant converter is in a frequency band.

Abstract translation: 一种用于提高功率转换器效率的方法包括提供谐振转换器，其中谐振转换器包括耦合到电源的输入，耦合到输入的多个功率开关，耦合到多个功率开关的谐振槽和控制器 耦合到电源开关并产生用于功率开关的多个栅极驱动信号，其中栅极驱动信号被布置为使得谐振转换器的开关频率处于频带。

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。

公开(公告)号：US20140307482A1

公开(公告)日：2014-10-16

申请号：US14033060

申请日：2013-09-20

Applicant: FutureWei Technologies, Inc.

Inventor： Daoshen Chen ,  Heping Dai

IPC: H02M3/335

CPC classification number: H02M3/3376 ,  H02M2007/4815 ,  Y02B70/1433 ,  Y02B70/1441

Abstract: A method for improving a power converter's efficiency comprises providing a resonant converter, wherein the resonant converter comprises an input coupled to a power source, a plurality of power switches coupled to the input, a resonant tank coupled to the plurality of power switches and a controller coupled to the power switches and generating a plurality of gate drive signals for the power switches, wherein the gate drive signals are arranged such that a switching frequency of the resonant converter is in a frequency band.

Abstract translation: 一种用于提高功率转换器效率的方法包括提供谐振转换器，其中谐振转换器包括耦合到电源的输入，耦合到输入的多个功率开关，耦合到多个功率开关的谐振槽和控制器 耦合到电源开关并产生用于功率开关的多个栅极驱动信号，其中栅极驱动信号被布置为使得谐振转换器的开关频率处于频带。

公开(公告)号：US20140306669A1

公开(公告)日：2014-10-16

申请号：US13923112

申请日：2013-06-20

Applicant: FUTUREWEI TECHNOLOGIES, INC.

Inventor： Heping Dai ,  Daoshen Chen ,  Bing Cai

IPC: H02M1/00

CPC classification number: H02M3/33507 ,  H02M3/156 ,  H02M2001/0022 ,  H02M2001/0025

Abstract: A method for improving a power converter's efficiency comprises detecting an input voltage of a power converter, determining an operation mode of the power converter based upon the input voltage of the power converter and generating a plurality of gate drive signals based upon a damped gain control, wherein the damped gain control is configured such that an output voltage of the power converter is in a range from a tightly regulated output voltage to an unregulated output voltage.

Abstract translation: 一种用于提高功率转换器效率的方法，包括检测功率转换器的输入电压，基于功率转换器的输入电压确定功率转换器的工作模式，并基于阻尼增益控制产生多个栅极驱动信号， 其中所述阻尼增益控制被配置为使得所述功率转换器的输出电压处于从紧密调节的输出电压到未调节的输出电压的范围内。