公开(公告)号：US20250105751A1

公开(公告)日：2025-03-27

申请号：US18969614

申请日：2024-12-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yongfa ZHU ,  Zhiqiang ZENG ,  Xiangyuan DENG ,  Jinsen CAI ,  Benhu LI ,  Haitao CHEN ,  Chengfeng JIANG

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

Abstract: This disclosure provides a converter and an electronic device that incorporates the converter. The converter includes: an input terminal, a first inverter circuit, a first transformer, a first rectifier circuit, and an output terminal. The first transformer includes a first primary-side winding and a first secondary-side winding. The input terminal is connected to a first terminal of the first inverter circuit, a second terminal of the first inverter circuit is connected to the first primary-side winding, and the first rectifier circuit is connected between the first secondary-side winding and the output terminal. A third terminal of the first inverter circuit is connected to the output terminal; or a third terminal of the first inverter circuit is connected to the first secondary-side winding. In this disclosure, a loss of the converter can be reduced.

公开(公告)号：US20230299669A1

公开(公告)日：2023-09-21

申请号：US18324207

申请日：2023-05-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhengyan HE ,  Haitao CHEN ,  Xingzhong ZHANG

IPC: H02M3/07 ,  H02M3/00

CPC classification number: H02M3/07 ,  H02M3/01

Abstract: A resonant switched capacitor direct current/direct current converter includes N resonant switched capacitor groups, M capacitors, and at least one LC series circuit, where N is an integer greater than or equal to 2, and M is an integer less than or equal to N. Each resonant switched capacitor group includes switches and a resonant circuit. The resonant circuit includes a resonant inductor and a resonant capacitor. The LC series circuit, namely, a circuit including an inductor and a capacitor that are connected in series, is connected between any two resonant switched capacitor groups. At the moment when the switch is turned off, the resonant inductor is not sufficient to implement complete discharging of a junction capacitor of the switch. The inductor is added, to implement complete discharging of the junction capacitor of the switch, that is, to remove a current, so that the switch implements soft switching.

公开(公告)号：US20200161978A1

公开(公告)日：2020-05-21

申请号：US16750999

申请日：2020-01-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yujian LIN ,  Haitao CHEN ,  Yue CHEN ,  Zhiqiang XIANG

IPC: H02M3/158 ,  G06F1/28 ,  H02M3/335

Abstract: A power supply circuit is disclosed. The circuit includes n capacitors, m power branches, and a control chip, where the m power branches include at least one first-type power branch and at least one second-type power branch, the first-type power branch includes a pre-boost topology structure and an open-loop topology structure connected in series to the pre-boost topology structure, the pre-boost topology structure is connected to the control chip, the pre-boost topology structure includes a straight-through state and a closed-loop state, and the control chip is configured to control, based on an output voltage of the power source, the pre-boost topology structure to switch between the straight-through state and the closed-loop state, so that the pre-boost topology structure pre-adjusts the output voltage of the power source and outputs a voltage range that meets a requirement of the open-loop topology structure.