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

IPC: H02M3/335 ,  H02M1/36 ,  H02M1/14

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。

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。

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

IPC: H02M3/335 ,  H02M3/338 ,  H02M1/08 ,  H02M1/00

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：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。

公开(公告)号：US20160181920A1

公开(公告)日：2016-06-23

申请号：US14579644

申请日：2014-12-22

Applicant: Futurewei Technologies, Inc.

Inventor： Heping Dai ,  Liming Ye ,  Jinbo Huang ,  Dianbo Fu

IPC: H02M3/158

CPC classification number: H02M1/14 ,  H02M1/44 ,  H02M3/1582 ,  H02M2001/0054 ,  Y02B70/1425 ,  Y02B70/1491

Abstract: A method comprises detecting an input voltage and an output voltage of a buck-boost converter, wherein the buck-boost converter comprises 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 and configuring the buck-boost converter such that at least one of the first high-side switch and second low-side switch operates at a fixed duty cycle mode.

Abstract translation: 一种方法包括检测降压 - 升压转换器的输入电压和输出电压，其中所述降压 - 升压转换器包括在输入电容器上串联连接的第一高侧开关和第一低侧开关， 侧开关和第二低侧开关串联连接在输出电容器和耦合在第一高侧开关的公共节点和第一低侧开关之间的电感器以及第二高侧开关的公共节点 和第二低侧开关，并配置降压 - 升压转换器，使得第一高侧开关和第二低侧开关中的至少一个以固定的占空比模式工作。

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。

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。

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。