公开(公告)号：US20170310238A1

公开(公告)日：2017-10-26

申请号：US15136836

申请日：2016-04-22

Applicant: Futurewei Technologies, Inc.

Inventor： Dianbo Fu

IPC: H02M7/44 ,  H02M1/08 ,  H02M1/00

CPC classification number: H02M7/487 ,  H02M7/44 ,  H02M7/53871

Abstract: An inverter apparatus and method are provided for converting direct current to alternating current. The inverter circuit includes a first switch sub-circuit configured for electrical communication with a power source and switching at a first frequency. The inverter circuit further includes a second switch sub-circuit in electrical communication with the first switch sub-circuit. The second switch sub-circuit is configured for electrical communication with a load and switching at a second frequency different from the first frequency.

公开(公告)号：US09774271B2

公开(公告)日：2017-09-26

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 ,  H02M3/28 ,  H02M1/00

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：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：US09641098B2

公开(公告)日：2017-05-02

申请号：US14656611

申请日：2015-03-12

Applicant: Futurewei Technologies, Inc.

Inventor： Dianbo Fu ,  Yunfeng Liu ,  Yongbing Gao

IPC: H02M7/537 ,  H02M7/483 ,  H02M7/487

CPC classification number: H02M7/483 ,  H02M7/487

Abstract: An inverter comprises a first input capacitor and a second input capacitor connected in series, an inverting unit comprising a first switch, a second switch, a third switch and a fourth switch connected in series, wherein the inverting unit is connected to an input of an L-C filter, a first bidirectional conductive path connected between a common node of the first switch and the second switch, and a common node of the first input capacitor and the second input capacitor, a second bidirectional conductive path connected between a common node of the third switch and the fourth switch, and the common node of the first input capacitor and the second input capacitor and a flying capacitor connected between the common node of the first switch and the second switch, and the common node of the third switch and the fourth switch.

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：US09548668B2

公开(公告)日：2017-01-17

申请号：US14656627

申请日：2015-03-12

Applicant: Futurewei Technologies, Inc.

Inventor： Dianbo Fu

IPC: H02M1/42 ,  H02M3/335 ,  H02M3/158 ,  H02M1/00

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。

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：US11088632B2

公开(公告)日：2021-08-10

申请号：US16557324

申请日：2019-08-30

Applicant: Futurewei Technologies, Inc.

Inventor： Dianbo Fu ,  Yunfeng Liu

IPC: H02M7/53 ,  H02M7/537 ,  H02M7/487 ,  H02M7/49 ,  H02M7/48

Abstract: A system includes a first inverter connected between a dc power source and an input terminal of a first leg of a coupled inductor, a second inverter connected between the dc power source and an input terminal of a second leg of the coupled inductor, a third inverter connected between the dc power source and an input terminal of a third leg of the coupled inductor, and an output filter connected between the coupled inductor and an ac power source, wherein output terminals of the first leg, the second leg and the third leg of the coupled inductor are connected together and further connected to the output filter.

公开(公告)号：US10819242B2

公开(公告)日：2020-10-27

申请号：US15884211

申请日：2018-01-30

Applicant: Futurewei Technologies, Inc.

Inventor： Heping Dai ,  Xiaolin Mao ,  Dianbo Fu

IPC: H02M3/335 ,  H02M1/00

Abstract: A DC to DC voltage converter includes a first voltage converter module configurable to generate a first output at a first output voltage selected from two or more different voltages and a second voltage converter module configurable to generate a second output at a second output voltage selected from two or more different voltages. The first voltage converter module and the second voltage converter module have a common input. A common output combines the first output voltage from the first voltage converter module and the second output voltage from the second voltage converter module.