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1. 发明公开

EP4280443A1 RESONANT AC/DC CONVERTER, ELECTRONIC DEVICE, AND ADAPTER 审中-实审
公开(公告)号：EP4280443A1
公开(公告)日：2023-11-22
申请号：EP21920240.5
申请日：2021-01-21
申请人： Huawei Digital Power Technologies Co., Ltd.
发明人： ZHANG, Xiao , WANG, Luyu , SUN, Wenbo , HONG, Qingzu , TORRICO-BASCOPÉ, Grover Victor
IPC分类号： H02M7/217
摘要： This application discloses a resonant AC/DC converter, an electronic device, and an adapter. An input end of a half bridge rectifier circuit is connected to an alternating current power supply. The half bridge rectifier circuit converts an alternating current of the alternating current power supply into a pulsating direct current. A clamping surge protection circuit is connected to the half bridge rectifier circuit in parallel, and the clamping surge protection circuit is connected to a resonant capacitor in a resonant DC/DC conversion circuit in parallel. When a voltage of the alternating current power supply is greater than a voltage of a bus capacitor, the clamping surge protection circuit performs surge protection, to prevent a surge signal entering the resonant DC/DC conversion circuit. When the voltage of the alternating current power supply is less than or equal to a voltage of a direct current bus, a voltage of the resonant capacitor is clamped, to protect the resonant capacitor. The resonant DC/DC conversion circuit performs electric energy conversion on the pulsating direct current that is output by the half bridge rectifier circuit, and then performs output. The clamping surge protection circuit not only performs clamping, but also suppresses a surge of the alternating current power supply. A relatively high integration level facilitates miniaturization of the power adapter. The half bridge rectifier circuit reduces conduction losses and increases efficiency.

2. 发明公开

EP4244963A1 ASYMMETRICAL IMPEDANCE NETWORK FOR 3-PORT BIDIRECTIONAL ISOLATED DC-DC CONVERTER 审中-实审
公开(公告)号：EP4244963A1
公开(公告)日：2023-09-20
申请号：EP20812011.3
申请日：2020-11-23
申请人： Huawei Digital Power Technologies Co., Ltd.
发明人： OU, Shuyu , HONG, Qingzu , SUN, Wenbo , TORRICO-BASCOPÉ, Grover, Victor , YAQOOB, Muhammad
IPC分类号： H02M1/00 , H02M3/335

3. 发明公开

EP4264812A1 APPARATUS AND METHOD FOR CONTROLLING HYBRID THREE-PORT DC-DC POWER CONVERTERS 审中-实审
公开(公告)号：EP4264812A1
公开(公告)日：2023-10-25
申请号：EP21700727.7
申请日：2021-01-14
申请人： Huawei Digital Power Technologies Co., Ltd.
发明人： OU, Shuyu , MUHAMMAD, Yaqoob , HONG, Qingzu , SUN, Wenbo , TORRICO-BASCOPÉ, Grover, Victor
IPC分类号： H02M3/00 , B60L53/10 , H02J7/02 , H02M3/335 , H02M7/5387 , H02J1/00

4. 发明公开

EP4282060A1 DIRECT POWER AC/DC CONVERTER 审中-实审
公开(公告)号：EP4282060A1
公开(公告)日：2023-11-29
申请号：EP21705478.2
申请日：2021-02-12
申请人： Huawei Digital Power Technologies Co., Ltd.
发明人： ZHANG, Xiao , OU, Shuyu , SUN, Wenbo , TORRICO-BASCOPÉ, Grover, Victor , WANG, Luyu
IPC分类号： H02M1/00 , H02M3/00 , H02M3/335 , H02M7/06 , H02M7/48 , H02M5/293

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