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公开(公告)号：USD997876S1
公开(公告)日：2023-09-05
申请号：US29769310
申请日：2021-02-04
Applicant: Delta Electronics (Shanghai) CO., LTD
Designer： Haibin Song , Qi Fu , Daofei Xu , Jinfa Zhang
Abstract: FIG. 1 is a front view thereof;
FIG. 2 is a back view thereof;
FIG. 3 is a left view thereof;
FIG. 4 is a right view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a bottom view thereof; and,
FIG. 7 is a perspective view thereof.-
公开(公告)号：US11581119B2
公开(公告)日：2023-02-14
申请号：US16740554
申请日：2020-01-13
Applicant: Delta Electronics (Shanghai) CO., LTD
Inventor： Haibin Song , Qi Fu , Daofei Xu , Jinfa Zhang
Abstract: A magnetic device comprises two base portions and magnetic pillars, wherein each of the two base portions has a first surface and the two first surfaces are faced to each other, and the magnetic pillars are disposed between the two first surfaces along a first direction, wherein, in the first direction, two of the magnetic pillars located at the outermost side of the base portion are a first corner pillar and a second corner pillar respectively, n of the magnetic pillars having the same cross-sectional area and located at the center position of the base portion are n center pillars, and cross-sectional area of the magnetic pillars are gradually increased from the first corner pillar to the center pillar closest to the first corner pillar, and from the second corner pillar to the center pillar closest to the second corner pillar.
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公开(公告)号：US20180174737A1
公开(公告)日：2018-06-21
申请号：US15846140
申请日：2017-12-18
Applicant: Delta Electronics (Shanghai) Co.,Ltd.
Inventor： Haibin Song , Zengyi Lu , Jinfa Zhang , Shiwei Liu , Jian Zhou , Daofei Xu , Jianwei Song
CPC classification number: H01F27/2804 , H01F27/24 , H01F2027/2819 , H01F2027/408 , H05K1/0298 , H05K1/115 , H05K1/165 , H05K3/46 , H05K2201/086 , H05K2201/09672
Abstract: The present disclosure discloses a PCB winding transformer and a coil board thereof. The PCB winding transformer comprises a coil board and a magnetic core. The coil board includes a primary coil and a secondary coil. The primary coil and the secondary coil are wound around a magnetic core column of the magnetic core. At least two via holes which correspond to the primary coil and the secondary coil respectively are disposed in the coil board. In the primary coil and the secondary coil, the via hole corresponding to the coil with less turns is disposed between an inner side of the coil with more turns and the magnetic core column.
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公开(公告)号：US11774516B2
公开(公告)日：2023-10-03
申请号：US17660212
申请日：2022-04-22
Applicant: Delta Electronics (Shanghai) Co., Ltd.
Inventor： Yunfei Liu , Haibin Song , Daofei Xu , Jinfa Zhang
CPC classification number: G01R31/40 , G01R19/0092 , G01R19/32 , G01R31/62
Abstract: The present application provides a detecting method of an operating state of a power supply and a detecting apparatus, where the power supply includes a primary circuit, a transformer and a secondary circuit. The secondary circuit includes a secondary current detecting unit, a temperature detecting unit and a secondary controlling unit. Firstly the secondary current detecting unit detects a current value of the secondary circuit, then the secondary controlling unit compares the current value of the secondary circuit with a preset current threshold. When the current value of the secondary circuit is less than or equal to the preset current threshold, the temperature detecting unit detects a temperature value of the power supply and the secondary controlling unit determines the operating state of the power supply according to the acquired temperature value of the power supply.
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公开(公告)号：US11489440B2
公开(公告)日：2022-11-01
申请号：US17146471
申请日：2021-01-11
Applicant: Delta Electronics (Shanghai) Co., Ltd.
Inventor： Haibin Song , Jian Zhou , Qi Fu , Daofei Xu , Jinfa Zhang
Abstract: The present invention discloses a power factor correction circuit. The power factor correction circuit includes: a first bridge arm having a first switch and a second switch; a second bridge arm having a third switch and a fourth switch; a first inductor and a second inductor; a first capacitor and/or a second capacitor connected with a common point between the second inductor and the first inductor; and a third capacitor and/or a fourth capacitor, the third capacitor connected in parallel to the third switch based on an arrangement of the second capacitor and having a capacitance value same as that of the second capacitor, the fourth capacitor connected in parallel to the fourth switch based on an arrangement of the first capacitor and having a capacitance value same as that of the first capacitor.
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Patent Agency Ranking
公开(公告)号：US10333418B2
公开(公告)日：2019-06-25
申请号：US15944815
申请日：2018-04-04
Applicant: Delta Electronics (Shanghai) CO., LTD
Inventor： Haibin Song , Jinfa Zhang , Daofei Xu
Abstract: A control device applied to a flyback converter including an auxiliary switch includes: an output voltage integrator, configured to integrate an output voltage of the flyback converter to obtain an amplitude of a negative magnetizing current of the flyback converter; and a comparator controller, configured to compare the obtained amplitude of the negative magnetizing current with a reference value, and turn off the auxiliary switch according to a comparison result. According to the present disclosure, it is able to achieve zero voltage switching of a primary-side switch of the flyback converter with variable outputs.
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公开(公告)号：US10333417B2
公开(公告)日：2019-06-25
申请号：US15944812
申请日：2018-04-04
Applicant: Delta Electronics (Shanghai) CO., LTD
Inventor： Haibin Song , Jinfa Zhang , Daofei Xu
Abstract: A control device, which is applied to a flyback converter including an auxiliary switch, includes: an on-time setter, configured to set an on-time threshold according to a reference value and an output voltage of the flyback converter; and an on-time controller, configured to output a control signal to turn on the auxiliary switch, and turn off the auxiliary switch when on-time of the auxiliary switch reaches the on-time threshold. According to the present disclosure, it is able to achieve zero voltage switching of a primary-side switch of the flyback converter with variable outputs.
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公开(公告)号：US09991811B1
公开(公告)日：2018-06-05
申请号：US15662301
申请日：2017-07-28
Applicant: Delta Electronics (Shanghai) Co., Ltd.
Inventor： Haibin Song , Daofei Xu , Jinfa Zhang , Jian Zhou , Qi Fu , Leyang Yang
CPC classification number: H02M3/33592 , H02M1/083 , H02M2001/0009 , H02M2001/0058
Abstract: The present invention discloses a control method and a control apparatus for a Flyback circuit. The Flyback circuit includes a primary switch, a secondary rectifier unit, a transformer and an output capacitor. The secondary rectifier unit includes a first terminal and a second terminal, which are electrically connected to the transformer and the output capacitor, respectively. In the control method for a Flyback circuit, after the secondary rectifier unit is controlled to be turned on once or twice according to the input voltage and/or output power of the Flyback, the primary switch is turned on to achieve the zero-voltage-switching. According to the invention, the zero-voltage-switching (ZVS) of the primary switch can be achieved under the entire input voltage range and the entire load range without adding additional power devices.
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公开(公告)号：USD1005953S1
公开(公告)日：2023-11-28
申请号：US29769321
申请日：2021-02-04
Applicant: Delta Electronics (Shanghai) CO., LTD
Designer： Haibin Song , Qi Fu , Daofei Xu , Jinfa Zhang
Abstract: FIG. 1 is a front view of the new design;
FIG. 2 is a back view thereof;
FIG. 3 is a left view thereof;
FIG. 4 is a right view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a bottom view thereof; and,
FIG. 7 is a perspective view thereof.
The broken lines in the drawings depict portions of the magnetic core that form no part of the claimed design.-
公开(公告)号：US11824456B2
公开(公告)日：2023-11-21
申请号：US17573480
申请日：2022-01-11
Applicant: Delta Electronics (Shanghai) Co., Ltd.
Inventor： Haibin Song , Hairui Xu , Fengkai Jiang , Daofei Xu , Jinfa Zhang
CPC classification number: H02M3/33571 , H02M1/0009 , H02M1/0095 , H02M1/083 , H02M1/38 , H02M3/01 , H02M3/33507 , H02M3/33523 , H02M3/33592
Abstract: A hybrid flyback circuit is provided and includes an upper switch, a lower switch, a transformer, a resonant circuit, a current sampling circuit and a control unit. The control unit includes an output voltage feedback unit, a peak current comparison unit controlling the upper switch to turn off when a sampling voltage corresponding to the current sampling signal is equal to the first voltage feedback signal, a first dead time delay unit controlling the lower switch to turn on after a first dead time starting from the turn-off time of the upper switch, a negative peak current feedback unit for generating a second voltage feedback signal, a conduction control unit controlling the lower switch to turn off, and a second dead time delay unit controlling the upper switch to turn on after a second dead time starting from the turn-off time of the lower switch.
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