公开(公告)号：US10411596B2

公开(公告)日：2019-09-10

申请号：US15149685

申请日：2016-05-09

Applicant: Futurewei Technologies, Inc.

Inventor： Hengchun Mao ,  Yan-Fei Liu ,  Renhua Wu

IPC: H02M1/32 ,  H02M3/158 ,  H01R43/26 ,  H02H3/00 ,  H02H9/02

Abstract: A power regulator comprises a first power switch configured to carry a pulsed current, an input capacitor between a positive terminal of an input voltage bus and a return point, an output capacitor between a positive terminal of an output voltage bus and the return point and a protection device coupled between the return point and a common return point of the input voltage bus and the output voltage bus, wherein the pulsed current is configured to flow through the protection device.

公开(公告)号：US20150263635A1

公开(公告)日：2015-09-17

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

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.

Abstract translation: 多级LLC谐振转换器包括与变压器的初级侧串联连接的谐振箱，串联连接的第一开关和第二开关，其中第一开关和第二开关的公共节点耦合到中间电压 通过第一隔离开关和谐振库以及串联连接的第三开关和第四开关，其中第三开关和第四开关的公共节点耦合到谐振槽。

公开(公告)号：US20140035552A1

公开(公告)日：2014-02-06

申请号：US13957080

申请日：2013-08-01

Applicant: FutureWei Technologies, Inc.

Inventor： Heping Dai ,  Hengchun Mao ,  Zhihua Liu ,  Zhaozheng Hou

IPC: G05F1/46

CPC classification number: G05F1/46 ,  H02M3/1588 ,  Y02B70/1425 ,  Y02B70/1466

Abstract: A converter comprises a high side switch, a low side switch connected in series with the high switch, a gate drive circuit comprising a first drive port coupled to a gate of the high side switch, a second drive port coupled to a gate of the low side switch, an SRE input port and a PWM input port coupled to a PWM controller, wherein the PWM controller is selected from the group consisting of a first PWM controller having two complementary PWM outputs, a second PWM controller having a tri-state PWM output and a third PWM controller having a single PWM output.

Abstract translation: A转换器包括高侧开关，与高开关串联的低侧开关，栅极驱动电路，包括耦合到高侧开关的栅极的第一驱动端口，耦合到低压开关的栅极的第二驱动端口 侧开关，SRE输入端口和耦合到PWM控制器的PWM输入端口，其中所述PWM控制器选自包括具有两个互补PWM输出的第一PWM控制器，具有三态PWM输出的第二PWM控制器 以及具有单个PWM输出的第三PWM控制器。

公开(公告)号：US09998018B2

公开(公告)日：2018-06-12

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 ,  H02M3/337 ,  H02M1/14 ,  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 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.

公开(公告)号：US20170179813A1

公开(公告)日：2017-06-22

申请号：US15451254

申请日：2017-03-06

Applicant: Futurewei Technologies, Inc.

Inventor： Dianbo Fu ,  Hengchun Mao ,  Bing Cai

IPC: H02M1/42 ,  H02M5/293 ,  H02M5/20

CPC classification number: H02M1/4208 ,  H02M1/32 ,  H02M1/4225 ,  H02M5/20 ,  H02M5/293 ,  Y02B70/126 ,  Y02P80/112

Abstract: An embodiment holdup time circuit of a bridgeless power factor correction circuit comprises a charge device connected between an output terminal of a bridgeless power factor correction circuit and an energy storage apparatus, a discharge device connected between the energy storage apparatus and an input of the bridgeless power factor correction circuit, the energy storage apparatus and the bridgeless power factor correction circuit comprising a first boost converter, a second boost converter, a first switch and a second switch, wherein the first switch is connected between the first boost converter and ground and the second switch is connected between the second boost converter and ground.

公开(公告)号：US09627972B2

公开(公告)日：2017-04-18

申请号：US14728590

申请日：2015-06-02

Applicant: Futurewei Technologies, Inc.

Inventor： Hengchun Mao ,  Dianbo Fu ,  Bing Cai

IPC: H05K7/00 ,  H02M3/158 ,  H01L21/48 ,  H01L23/495 ,  H01L23/00 ,  H01L25/065 ,  H01L25/16 ,  H01L25/00 ,  H02M3/00

CPC classification number: H02M3/158 ,  H01L21/4828 ,  H01L21/4842 ,  H01L23/49562 ,  H01L23/49575 ,  H01L23/49589 ,  H01L24/81 ,  H01L25/0655 ,  H01L25/0657 ,  H01L25/16 ,  H01L25/50 ,  H01L2225/06513 ,  H01L2225/06517 ,  H01L2924/1205 ,  H01L2924/1206 ,  H01L2924/1207 ,  H01L2924/13091 ,  H01L2924/14252 ,  H01L2924/1426 ,  H02M3/00 ,  H02M3/1588 ,  Y02B70/1466 ,  Y10T29/4913

Abstract: An embodiment power converter package comprises a semiconductor die, an output inductor, a plurality of input capacitors and output capacitors. The semiconductor die, the output inductor and the plurality of capacitors are mounted on a lead frame and connected one to another through various pads on the lead frame. The semiconductor die comprises a high side switch, a low side switch and a driver. The power converter package is electrically coupled to an external pulse width modulation controller through a variety of input and output pads.

公开(公告)号：US09595870B2

公开(公告)日：2017-03-14

申请号：US14150473

申请日：2014-01-08

Applicant: Futurewei Technologies, Inc.

Inventor： Hengchun Mao ,  Dianbo Fu ,  Bing Cai

IPC: H02M3/158 ,  H02J1/10

CPC classification number: H02M3/1582 ,  H02J1/102

Abstract: A power system comprising a non-isolated voltage regulator configured to couple to an input voltage and produce an output voltage, wherein the non-isolated voltage regulator is in a power distribution system and configured to boost the input voltage when the input voltage is less than a minimum output voltage, to reduce the input voltage when the input voltage is greater than a maximum output voltage, and to pass-through the input voltage when the input voltage is greater than or equal to the minimum output voltage and less than or equal to the maximum output voltage.

Abstract translation: 一种电力系统，包括被配置为耦合到输入电压并产生输出电压的非隔离电压调节器，其中所述非隔离电压调节器在配电系统中并且被配置为当所述输入电压小于 最小输出电压，以在输入电压大于最大输出电压时降低输入电压，并且当输入电压大于或等于最小输出电压并且小于或等于 最大输出电压。

公开(公告)号：US20130265804A1

公开(公告)日：2013-10-10

申请号：US13857834

申请日：2013-04-05

Applicant: FUTUREWEI TECHNOLOGIES, INC.

Inventor： Dianbo Fu ,  Hengchun Mao ,  Heping Dai

IPC: H02M3/335

CPC classification number: H02M3/33576 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1491

Abstract: A converter comprises a bridge and a resonant tank coupled between the bridge and an isolation transformer. The converter is configured such that the converter operates at a first constant-gain resonant frequency during a normal operation condition wherein a voltage gain of the converter is essentially insensitive to an output load change and the converter operates at a minimum-gain damping frequency during an abnormal operation condition wherein a voltage gain of the converter is approximately equal to zero.

Abstract translation: A转换器包括桥和耦合在桥与隔离变压器之间的谐振槽。 转换器被配置为使得转换器在正常操作状态期间以第一恒定增益谐振频率工作，其中转换器的电压增益对输出负载变化基本上不敏感，并且转换器在期间在最小增益阻尼频率下工作 异常操作条件，其中转换器的电压增益近似等于零。

公开(公告)号：US09077255B2

公开(公告)日：2015-07-07

申请号：US13739920

申请日：2013-01-11

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.

Abstract translation: 多级LLC谐振转换器包括与变压器的初级侧串联连接的谐振箱，串联连接的第一开关和第二开关，其中第一开关和第二开关的公共节点耦合到中间电压 通过第一隔离开关和谐振库以及串联连接的第三开关和第四开关，其中第三开关和第四开关的公共节点耦合到谐振槽。

公开(公告)号：US20140226246A1

公开(公告)日：2014-08-14

申请号：US14252912

申请日：2014-04-15

Applicant: FutureWei Technologies, Inc.

Inventor： Hengchun Mao ,  Yan-Fei Liu ,  Renhua Wu

IPC: H02H3/00 ,  H01R43/26 ,  H02H9/02

CPC classification number: H02M3/158 ,  H01R43/26 ,  H02H3/003 ,  H02H9/02 ,  H02H9/025 ,  H02M1/32 ,  H02M3/1582 ,  Y10T29/49117

Abstract: An embodiment high efficiency power regulator comprises a three-terminal converter and a protection device. The three-terminal converter comprises a first terminal coupled to a positive terminal of an input voltage bus, a second terminal coupled to a positive terminal of an output voltage bus and a third terminal coupled to the protection device. The protection device comprises an inrush current limiting element connected in series with a reverse polarity protection device.

Abstract translation: 一个实施例的高效率功率调节器包括三端转换器和保护装置。 三端转换器包括耦合到输入电压总线的正端子的第一端子，耦合到输出电压总线的正端子的第二端子和耦合到保护装置的第三端子。 保护装置包括与反极性保护装置串联连接的浪涌电流限制元件。