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：US20170033701A1

公开(公告)日：2017-02-02

申请号：US15289345

申请日：2016-10-10

Applicant: Futurewei Technologies, Inc.

Inventor： Dianbo Fu ,  Wensong Yu ,  Hengchun Mao ,  Heping Dai

IPC: H02M3/335 ,  H02M1/14

CPC classification number: H02M3/33546 ,  H02M1/14 ,  H02M3/33576 ,  H02M3/3376 ,  H02M7/487 ,  H02M2007/4815 ,  Y02B70/1433 ,  Y02B70/1441

Abstract: A multilevel LLC resonant converter comprises a first capacitor and a second capacitor connected in series providing a mid-voltage point of an input dc power source, a resonant tank connected in series with a primary side of a transformer, a first transistor and a second transistor connected in series, wherein a common node of the first transistor and the second transistor is connected to the mid-voltage point through a first isolation switch and a third transistor and a fourth transistor connected in series, wherein a common node of the third transistor and the fourth transistor is connected to the mid-voltage point through a second isolation switch.

Abstract translation: 多级LLC谐振转换器包括串联连接的第一电容器和第二电容器，其提供输入直流电源的中间电压点，与变压器的初级侧串联连接的谐振箱，第一晶体管和第二晶体管 串联连接，其中第一晶体管和第二晶体管的公共节点通过第一隔离开关和串联连接的第三晶体管和第四晶体管连接到中压点，其中第三晶体管的公共节点和 第四晶体管通过第二隔离开关连接到中压点。

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：US09467057B2

公开(公告)日：2016-10-11

申请号：US14724506

申请日：2015-05-28

Applicant: FutureWei Technologies, Inc.

Inventor： Dianbo Fu ,  Wensong Yu ,  Hengchun Mao ,  Heping Dai

IPC: H02M3/335 ,  H02M3/337 ,  H02M7/487 ,  H02M7/48

CPC classification number: H02M3/33546 ,  H02M1/14 ,  H02M3/33576 ,  H02M3/3376 ,  H02M7/487 ,  H02M2007/4815 ,  Y02B70/1433 ,  Y02B70/1441

Abstract: A multilevel LLC resonant converter comprises a resonant tank connected in series with a primary side of a transformer, a first switch and a second switch connected in series, wherein a common node of the first switch and the second switch is coupled to a mid-voltage point through a first isolation switch and the resonant bank and a third switch and a fourth switch connected in series, wherein a common node of the third switch and the fourth switch is coupled to the resonant tank.

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：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

IPC: H02M3/335 ,  H02M1/08

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.

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：US20150263634A1

公开(公告)日：2015-09-17

申请号：US14656627

申请日：2015-03-12

Applicant: Futurewei Technologies, Inc.

Inventor： Dianbo Fu

IPC: H02M3/335

CPC classification number: H02M3/33592 ,  H02M3/1582 ,  H02M3/33569 ,  H02M2001/0058 ,  H02M2001/007 ,  Y02B70/1425 ,  Y02B70/1433 ,  Y02B70/1475 ,  Y02B70/1491

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

Abstract translation: A转换器包括耦合到输入直流源的非隔离级，其中非隔离级被配置为在PWM模式下操作，并且非隔离级被配置为响应于第一输入在降压转换器模式下操作 并且响应于第二输入电压和耦合在非隔离级与负载之间的谐振级而工作于升压转换器模式，其中所述谐振级被配置为在谐振模式下工作。