公开(公告)号：US20200287471A1

公开(公告)日：2020-09-10

申请号：US16502605

申请日：2019-07-03

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chia-Hsiong HUANG ,  Yi-Hsun CHIU

IPC: H02M3/335 ,  H02M1/08

Abstract: A resonant conversion apparatus with extended hold-up time includes a resonant conversion unit, a time-extended unit, and a control unit. The resonant conversion unit includes a primary side, a transformer unit, and a secondary side. The time-extended unit includes a coil and a bridge arm assembly. When a switching frequency of the primary side is less than a critical frequency, the control unit controls the bridge arm assembly being switched on or switched off so that an output voltage of the resonant conversion apparatus is higher than a predetermined voltage within a hold-up time.

公开(公告)号：US20240162833A1

公开(公告)日：2024-05-16

申请号：US18507853

申请日：2023-11-13

Applicant: DELTA ELECTRONICS, INC.

Inventor： Yi-Sheng CHANG ,  Cheng-Chan HSU ,  Chia-Wei CHU ,  Chun-Yu YANG ,  Deng-Cyun HUANG ,  Yi-Hsun CHIU ,  Chien-An LAI ,  Yu-Tai WANG ,  Chi-Shou HO ,  Zhi-Yuan WU ,  Ko-Wen LU

IPC: H02M7/219 ,  H02M7/23

CPC classification number: H02M7/219 ,  H02M7/23

Abstract: A power supply unit supplies power to a load, and the power supply unit includes a power factor corrector, a DC conversion module, and an isolated conversion module. The power factor corrector is plugged into a first main circuit board and converts an AC power into a DC power. The DC conversion module is plugged into the first main circuit board and converts the DC power into a main power. The isolated conversion module includes a bus capacitor, the bus capacitor is coupled to the DC conversion module through a first power copper bar, and coupled to the power factor corrector through a second power copper bar. The first power copper bar and the second power copper bar are arranged on a side opposite to the first main circuit board, and are arranged in parallel with the first main circuit board.

公开(公告)号：US20240161969A1

公开(公告)日：2024-05-16

申请号：US18507775

申请日：2023-11-13

Applicant: DELTA ELECTRONICS, INC.

Inventor： Yi-Hsun CHIU ,  Yi-Sheng CHANG ,  Chien-An LAI ,  Chia-Wei CHU

IPC: H01F27/28 ,  H01F27/24 ,  H01F27/29

CPC classification number: H01F27/2804 ,  H01F27/24 ,  H01F27/29 ,  H01F2027/2809

Abstract: A planar magnetic component is arranged on a circuit board of a resonant converter, and the resonant converter includes a primary-side circuit and a secondary-side circuit. The planar magnetic component includes an inductor trace, an inductor iron core, and a current transformer trace. The inductor trace is arranged on the primary-side circuit and formed one layer board of the circuit board to serve as a resonant inductor coupled to the primary-side circuit. The inductor iron core includes a core pillar, and the core pillar penetrates a through hole of the circuit board, and the inductor trace surrounds the through hole. The current transformer trace is formed on the circuit board to serve as a current transformer coil coupled to the resonant inductor. The current transformer trace surrounds the through hole to form a common-core structure that shares the inductor iron core.

公开(公告)号：US20240161968A1

公开(公告)日：2024-05-16

申请号：US18507751

申请日：2023-11-13

Applicant: DELTA ELECTRONICS, INC.

Inventor： Yi-Hsun CHIU ,  Yi-Sheng CHANG ,  Chun-Yu YANG ,  Meng-Chi TSAI

IPC: H01F27/28 ,  H02M3/00 ,  H05K1/16

CPC classification number: H01F27/2804 ,  H02M3/01 ,  H05K1/165 ,  H01F2027/2809 ,  H01F2027/2819

Abstract: A planar transformer is configured on a multi-layer circuit board of a resonant converter. The planar transformer includes multiple layers of primary-side traces, multiple layers of secondary-side traces, and an iron core. The primary-side traces serve as a primary-side coil of the transformer to generate a first direction magnetic flux when the resonant converter operates. The secondary-side traces serve as a secondary-side coil of the transformer to generate a second direction magnetic flux when the resonant converter operates. The primary-side traces and the secondary-side traces surround a first core pillar and the second core pillar, and the primary-side traces and the secondary-side traces are configured in a specific stacked structure on the multi-layer circuit board, so that a magnetomotive force of the planar transformer can maintain balance during the operation of the resonant converter.

公开(公告)号：US20240161966A1

公开(公告)日：2024-05-16

申请号：US18507446

申请日：2023-11-13

Applicant: DELTA ELECTRONICS, INC.

Inventor： Yi-Sheng CHANG ,  Chien-An LAI ,  Yi-Hsun CHIU ,  Chun-Yu YANG

IPC: H01F27/28 ,  H01F27/24 ,  H01F27/29

CPC classification number: H01F27/2804 ,  H01F27/24 ,  H01F27/29 ,  H01F2027/2809

Abstract: A planar magnetic component is arranged on a circuit board of a resonant converter, and the resonant converter includes a primary-side circuit and a secondary-side circuit. The planar magnetic component includes an inductor trace, a primary-side trace, a secondary-side trace, and an iron core assembly. The iron core assembly includes an inductor iron core and an iron core. The primary-side trace surrounds the first through hole in a first direction and surrounds the second through hole in a second direction to form an ∞-shaped trace. The inductor trace is formed on the primary-side layer board and coupled to the primary-side trace, and two ends of the inductor trace form an input terminal and an output terminal of the planar magnetic component.