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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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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：US09693412B2
公开(公告)日：2017-06-27
申请号：US15188490
申请日：2016-06-21
Applicant: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： Xiaoping Fu , Xinghua Zhang , Jian Zhou
IPC: H05B33/08
CPC classification number: H05B33/0851 , H05B33/0815 , Y02B20/346
Abstract: A dimming driver circuit includes a power converting unit, an input voltage detection unit, an output voltage detection unit, a driving unit and a control unit. The power converting unit receives an input voltage. During an operation of the switch of the power converting unit, the input voltage is converted into an output voltage. The driving unit is used for driving the switch. The control unit calculates an on-time period of the switch in an operation cycle according to a first detecting signal, a second detecting signal and a dimming signal. The control unit generates a control signal to the driving unit according to the on-time period. The driving unit adjusts the operation of the first switch so as to control the brightness of the light-emitting diode.
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公开(公告)号：US20170150567A1
公开(公告)日：2017-05-25
申请号：US15188490
申请日：2016-06-21
Applicant: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： Xiaoping Fu , Xinghua Zhang , Jian Zhou
IPC: H05B33/08
CPC classification number: H05B33/0851 , H05B33/0815 , Y02B20/346
Abstract: A dimming driver circuit includes a power converting unit, an input voltage detection unit, an output voltage detection unit, a driving unit and a control unit. The power converting unit receives an input voltage. During an operation of the switch of the power converting unit, the input voltage is converted into an output voltage. The driving unit is used for driving the switch. The control unit calculates an on-time period of the switch in an operation cycle according to a first detecting signal, a second detecting signal and a dimming signal. The control unit generates a control signal to the driving unit according to the on-time period. The driving unit adjusts the operation of the first switch so as to control the brightness of the light-emitting diode.
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公开(公告)号：US11616449B2
公开(公告)日：2023-03-28
申请号：US17212056
申请日：2021-03-25
Applicant: Delta Electronics (Shanghai) CO., LTD
Inventor： Jian Zhou , Haibin Song , Daofei Xu , Jinfa Zhang
Abstract: A power adapter, includes: a transformer, including a primary winding and a secondary winding; a primary circuit, including a primary main switch, electrically coupled to the primary winding; a secondary circuit, including a first switch unit and a second switch unit; a first end of the first switch unit and a first end of the second switch unit are coupled to the secondary winding of the transformer, and a second end of the first switch unit and a second end of the second switch unit connected to a first output port and a second output port, respectively; a control circuit, configured to detect output voltages of the first output port and the second output port, and controlling the primary main switch, the first switch unit and the second switch unit to adjust the output voltages of the first output port and the second output port.
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Patent Agency Ranking
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：US11737219B2
公开(公告)日：2023-08-22
申请号：US17216804
申请日：2021-03-30
Applicant: Delta Electronics (Shanghai) CO., LTD
Inventor： Haibin Song , Jian Zhou , Daofei Xu , Jinfa Zhang
CPC classification number: H05K5/0026 , H02M7/003 , H05K1/0216 , H05K1/14 , H05K1/181 , H05K2201/1003
Abstract: A power adapter includes a first output port, a second output port, a motherboard, a first flyback power module, a second flyback power module, a bus capacitor and an EMI module. The first flyback power module has a first circuit board and is electrically connected to the first output port. The second flyback power module has a second circuit board and is electrically connected to the second output port. The EMI module has a third circuit board and is arranged on the motherboard. The first circuit board and the second circuit board are arranged in parallel with each other, and are arranged substantially perpendicular to the motherboard on a first side of the motherboard.
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公开(公告)号：US10998118B2
公开(公告)日：2021-05-04
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
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：US10541616B2
公开(公告)日：2020-01-21
申请号：US15462907
申请日：2017-03-19
Applicant: Delta Electronics (Shanghai) Co., Ltd.
Inventor： Hai-Bin Song , Jin-Fa Zhang , Dao-Fei Xu , Jian Zhou , Qi Fu , Xiao-Jun Chen , Jian-Wei Song
Abstract: A power adaptor includes a main electric unit, a transformer unit and a bus capacitor unit. The main electric unit is disposed on a first surface. The transformer unit is configured on the main electric unit and disposed on a second surface. The first surface is perpendicular to the second surface. The main electric unit and the transformer unit form a containing space. The bus capacitor unit includes at least one bus capacitor. The bus capacitor unit is disposed in the containing space.
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公开(公告)号：US11711017B2
公开(公告)日：2023-07-25
申请号：US17158278
申请日：2021-01-26
Applicant: Delta Electronics (Shanghai) CO., LTD
Inventor： Jian Zhou , Haibin Song , Daofei Xu , Jinfa Zhang
CPC classification number: H02M3/1582 , H02J1/00 , H02M3/3353
Abstract: The present disclosure relates to an adapter. The adapter includes an input port, a first output port and a second output port, and the adapter further includes: a rectifier circuit having an input terminal being connected to the input port of the adapter; a bus capacitor connected to an output terminal of the rectifier circuit in parallel; a first flyback converter having an input terminal connected to the bus capacitor and an output terminal coupled to the first output port; and a second flyback converter having an input terminal connected to the bus capacitor and an output terminal coupled to the second output port.
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