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.