公开(公告)号：US12301120B2

公开(公告)日：2025-05-13

申请号：US17966084

申请日：2022-10-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Luyu Wang ,  Shengyong Dai ,  Grover Victor Torrico-Bascopé ,  Qingzu Hong ,  Xiao Zhang

IPC: H02M3/335 ,  H02M1/32 ,  H02M1/36

Abstract: The present disclosure relates to a DC-to-DC converter. The DC-to-DC converter includes a first port coupled to a first full bridge and a transformer coupled to the first full bridge and to a second full bridge. The DC-to-DC converter further includes a second port coupled to the second full bridge; a first inductor coupled between the second full bridge and the second port; and a first freewheeling circuit including a first diode being coupled in series with a switch. The first freewheeling circuit is further coupled in parallel with the first inductor between the second full bridge and the second port. Thereby, the DC-to-DC converter has a wide input and wide output (WIWO) range and a voltage gain that is linear.

公开(公告)号：US12231034B2

公开(公告)日：2025-02-18

申请号：US18145179

申请日：2022-12-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Mattias Andersson ,  Grover Victor Torrico-Bascopé ,  Shengyong Dai ,  Xiao Zhang ,  Qingzu Hong

IPC: H02M1/088 ,  H02M3/07

Abstract: The technology of this application relates to a drive circuit with an energy recovery function, including a control circuit, an energy recovery drive circuit, a switch circuit, and a direct current power supply. The control circuit is configured to control an energy storage capacitor in the energy recovery drive circuit to charge a junction capacitor of the switch circuit at a first moment, and enable the direct current power supply to charge the junction capacitor of the switch circuit through the energy recovery drive circuit at a second moment, so that the switch circuit is switched on. The control circuit is further configured to control the junction capacitor of the switch circuit to charge the energy storage capacitor in the energy recovery drive circuit at a third moment, and enable the junction capacitor of the switch circuit to discharge to a ground through the energy recovery drive circuit at a fourth moment, so that the switch circuit is switched off.

公开(公告)号：US12267014B2

公开(公告)日：2025-04-01

申请号：US17976010

申请日：2022-10-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yaqoob Muhammad ,  Shengyong Dai ,  Qingzu Hong ,  Xiao Zhang ,  Grover Victor Torrico-Bascopé

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

Abstract: According to a non-isolated DCDC resonant conversion control circuit provided in embodiments of this application, an inductor and a capacitor that are resonant are connected in series, so that a current flowing through the inductor is a sine waveform. A waveform coefficient of the sine wave is small, and a conduction loss of the sine wave is low. Therefore, the circuit provided in embodiments of this application can significantly reduce a circuit loss. According to the non-isolated DCDC resonant conversion control method provided in embodiments of this application, not only a phase shift angle can be adjusted to enable a switching transistor to implement zero voltage switching (ZVS) on, but switching frequency can also be adjusted. Therefore, ranges in which a voltage and power of an output interface can be adjusted are large, so that non-isolated wide-range DCDC resonant conversion is implemented.

公开(公告)号：US09570973B2

公开(公告)日：2017-02-14

申请号：US14017442

申请日：2013-09-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wenbin Chen ,  Shengyong Dai ,  Boning Huang

IPC: H02M1/42 ,  H02M7/04 ,  H02M1/14 ,  H02M3/158

CPC classification number: H02M1/4208 ,  H02M1/14 ,  H02M1/4225 ,  H02M7/04 ,  H02M2003/1586 ,  Y02B70/126 ,  Y02P80/112

Abstract: A bridgeless power factor correction (PFC) circuit, which includes an alternating current power supply module, a power module, and a control module; the power module includes one or more interleaved PFC circuits, each interleaved PFC circuit includes one inductor, one pair of first switching components, and at least one capacitor, a first end of the inductor is connected to the alternating current power supply module, and a second end of the inductor is connected to one end of each capacitor through one of the first switching components and is also connected to the other end of each capacitor through the other one of the first switching components; and the control module samples a current of each first switching component in the power module, and turns off a first switching component through which a negative current flows.

Abstract translation: 一种无桥功率因数校正（PFC）电路，其包括交流电源模块，功率模块和控制模块; 功率模块包括一个或多个交错PFC电路，每个交错PFC电路包括一个电感器，一对第一开关组件和至少一个电容器，电感器的第一端连接到交流电源模块，并且 电感器的第二端通过第一开关部件中的一个连接到每个电容器的一端，并且还通过第一开关部件中的另一个连接到每个电容器的另一端; 并且控制模块对功率模块中的每个第一开关部件的电流进行采样，并且关断负电流流过的第一开关部件。

公开(公告)号：US20140002033A1

公开(公告)日：2014-01-02

申请号：US14017442

申请日：2013-09-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wenbin Chen ,  Shengyong Dai ,  Boning Huang

IPC: H02M1/42

CPC classification number: H02M1/4208 ,  H02M1/14 ,  H02M1/4225 ,  H02M7/04 ,  H02M2003/1586 ,  Y02B70/126 ,  Y02P80/112

Abstract: A bridgeless power factor correction (PFC) circuit, which includes an alternating current power supply module, a power module, and a control module; the power module includes one or more interleaved PFC circuits, each interleaved PFC circuit includes one inductor, one pair of first switching components, and at least one capacitor, a first end of the inductor is connected to the alternating current power supply module, and a second end of the inductor is connected to one end of each capacitor through one of the first switching components and is also connected to the other end of each capacitor through the other one of the first switching components; and the control module samples a current of each first switching component in the power module, and turns off a first switching component through which a negative current flows.

Abstract translation: 一种无桥功率因数校正（PFC）电路，其包括交流电源模块，功率模块和控制模块; 功率模块包括一个或多个交错PFC电路，每个交错PFC电路包括一个电感器，一对第一开关组件和至少一个电容器，电感器的第一端连接到交流电源模块，并且 电感器的第二端通过第一开关部件中的一个连接到每个电容器的一端，并且还通过第一开关部件中的另一个连接到每个电容器的另一端; 并且控制模块对功率模块中的每个第一开关部件的电流进行采样，并且关断负电流流过的第一开关部件。