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Patent Agency Ranking
公开(公告)号：US20220200446A1
公开(公告)日：2022-06-23
申请号：US17692623
申请日：2022-03-11
Applicant: Huawei Technologies Co., Ltd.
Abstract: A magnetic apparatus includes a first magnetic member, a second magnetic member, a first winding, and a second winding, where the first magnetic member includes a first magnetic cylinder, a second magnetic cylinder, a third magnetic cylinder, and at least one fourth magnetic cylinder, and where the first winding is wound around the first magnetic cylinder and the second magnetic cylinder, the second winding is wound around the first magnetic cylinder and the third magnetic cylinder, and a direction in which the first winding is wound around the second magnetic cylinder is opposite to a direction in which the second winding is wound around the third magnetic cylinder.
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公开(公告)号：US20230260694A1
公开(公告)日：2023-08-17
申请号：US18306363
申请日：2023-04-25
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
CPC classification number: H01F27/38 , H01F27/24 , H01F27/29 , H01F27/2804
Abstract: A first noise cancellation winding is disposed between a primary winding and a secondary winding of the planar transformer, and a quantity of coil turns of each noise cancellation winding layer in the first noise cancellation winding is selected to suppress common mode noise generated by the secondary winding or the primary winding and improve noise suppression performance. The first noise cancellation winding is formed by at least two noise cancellation winding layers being connected in series, and other noise cancellation winding layers in the first noise cancellation winding that are connected in series to a first noise winding layer to increase an induced voltage of the first noise winding layer. The foregoing structure allows for a reduced number of coil turns in the first winding layer, compared to existing technology, to reach a required induced voltage.
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公开(公告)号：US11062837B2
公开(公告)日：2021-07-13
申请号：US16871145
申请日：2020-05-11
Applicant: Huawei Technologies Co., Ltd.
Abstract: A planar transformer includes a primary winding including a first primary winding layer, a secondary winding including a first secondary winding layer, where an Ns1th turn of coil to an (Ns1+B1−1)th turn of coil in the secondary winding are disposed at the first secondary winding layer, and a charge balance winding including a first charge balance winding layer, where the first charge balance winding layer is disposed between the first primary winding layer and the first secondary winding layer, and is adjacent to the first primary winding layer and the first secondary winding layer. N1 turns of coils are disposed at the first charge balance winding layer, where N1 is greater than or equal to Nb1.
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公开(公告)号：US11955883B2
公开(公告)日：2024-04-09
申请号：US17692623
申请日：2022-03-11
Applicant: Huawei Technologies Co., Ltd.
CPC classification number: H02M3/01 , H02M1/0048 , H01F27/306 , H02M1/0064
Abstract: A magnetic apparatus includes a first magnetic member, a second magnetic member, a first winding, and a second winding, where the first magnetic member includes a first magnetic cylinder, a second magnetic cylinder, a third magnetic cylinder, and at least one fourth magnetic cylinder, and where the first winding is wound around the first magnetic cylinder and the second magnetic cylinder, the second winding is wound around the first magnetic cylinder and the third magnetic cylinder, and a direction in which the first winding is wound around the second magnetic cylinder is opposite to a direction in which the second winding is wound around the third magnetic cylinder.
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公开(公告)号：US20200273617A1
公开(公告)日：2020-08-27
申请号：US16871145
申请日：2020-05-11
Applicant: Huawei Technologies Co., Ltd.
Abstract: A planar transformer includes a primary winding including a first primary winding layer, a secondary winding including a first secondary winding layer, where an Ns1th turn of coil to an (Ns1+B1−1)th turn of coil in the secondary winding are disposed at the first secondary winding layer, and a charge balance winding including a first charge balance winding layer, where the first charge balance winding layer is disposed between the first primary winding layer and the first secondary winding layer, and is adjacent to the first primary winding layer and the first secondary winding layer. N1 turns of coils are disposed at the first charge balance winding layer, where N1 is greater than or equal to Nb1.
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