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公开(公告)号：US20180294735A1
公开(公告)日：2018-10-11
申请号：US15944815
申请日：2018-04-04
Applicant: Delta Electronics (Shanghai) CO., LTD
Inventor： Haibin SONG , Jinfa ZHANG , Daofei XU
CPC classification number: H02M3/33592 , H02M1/083 , H02M2001/0058 , Y02B70/1475 , Y02B70/1491
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：US20180294734A1
公开(公告)日：2018-10-11
申请号：US15944812
申请日：2018-04-04
Applicant: Delta Electronics (Shanghai) CO., LTD
Inventor： Haibin SONG , Jinfa ZHANG , Daofei XU
CPC classification number: H02M3/33592 , H02M1/083 , H02M3/335 , H02M3/33507 , H02M2001/0058 , Y02B70/1475 , Y02B70/1491
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：US20150372600A1
公开(公告)日：2015-12-24
申请号：US14709693
申请日：2015-05-12
Applicant: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： Dong WEI , Dezhi JIAO , Daofei XU
IPC: H02M3/335
CPC classification number: H02M3/33507 , H02M2001/0035 , H02M2001/0058 , Y02B70/1491 , Y02B70/16
Abstract: A method for controlling converter such as a Flyback converter is disclosed. A load of the Flyback converter varies between zero and a peak value. The method includes: a load detecting step for detecting the load; and an operating mode control step for controlling the Flyback converter to switch between two or more of a continuous conduction mode, a valley conduction mode and a burst mode according to the load. A converter such as a Flyback converter is also provided.
Abstract translation: 公开了一种用于控制诸如反激转换器之类的转换器的方法。 反激转换器的负载在零和峰值之间变化。 该方法包括：负载检测步骤，用于检测负载; 以及操作模式控制步骤，用于根据负载控制反激转换器在连续导通模式，谷值导通模式和突发模式中的两个或更多个之间切换。 还提供了诸如反激转换器的转换器。
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公开(公告)号：US20220385199A1
公开(公告)日：2022-12-01
申请号：US17658257
申请日：2022-04-07
Applicant: Delta Electronics (Shanghai) Co.,Ltd.
Inventor： Hairui XU , Haibin SONG , Daofei XU , Jinfa ZHANG
Abstract: The application discloses a converter adaptable to a wide range output voltage and a control method thereof. The converter includes a PWM half-bridge circuit. The control method includes: causing the PWM half-bridge circuit to enter into a DCM by regulating a switching frequency; in each switching period, extending conduction time or turning on a corresponding synchronous rectifier once again for a predetermined time before the first power switch and the second power switch are turned on, to realize zero voltage switching (ZVS) of the first power switch and the second power switch. The application realizes ZVS of the primary power switches, thereby reducing loss.
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公开(公告)号：US20220006389A1
公开(公告)日：2022-01-06
申请号：US17365992
申请日：2021-07-01
Applicant: Delta Electronics (Shanghai) Co., Ltd.
Inventor： Haibin SONG , Jian ZHOU , Hairui XU , Daofei XU , Jinfa ZHANG
Abstract: Disclosed are a voltage switching circuit and a power adapter having the same. The voltage switching circuit comprises a first switching circuit having a first terminal receiving a first voltage from a first converter, and a second switching circuit having a first terminal receiving a second voltage from a second converter. Second terminals of the first and second switching circuits are electrically connected to form a switching terminal for outputting an output voltage. When the output voltage is required to be switched from the first voltage to the second voltage, the first switching circuit is controlled to be turned off and then the second switching circuit is controlled to be turned on, and when a voltage at the first terminal of the second switching circuit is higher than a preset voltage, the second converter is shut down or kept off.
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Patent Agency Ranking
公开(公告)号：US20210350974A1
公开(公告)日：2021-11-11
申请号：US17232531
申请日：2021-04-16
Applicant: Delta Electronics (Shanghai) CO., LTD
Inventor： Haibin SONG , Qi FU , Daofei XU , Jinfa ZHANG
Abstract: Present disclosure provides a winding assembly and a magnetic element. The winding assembly comprises a substrate with a central hole and a first winding disposed in the substrate, the first winding comprising two layers of coil wound around a central hole in the substrate; wherein, a second end of a first layer of coil away from the central hole is connected to a first end of a second layer of coil away from the central hole, and a first end of the first layer of coil close to the central hole and a second end of the second layer of coil close to the central hole serve as a starting-end and a finishing-end of the first winding, respectively. The magnetic element comprises a winding assembly and a magnetic core, and the winding assembly is sleeved on a magnetic leg of the magnetic core.
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公开(公告)号：US20210315112A1
公开(公告)日：2021-10-07
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
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：US20210313889A1
公开(公告)日：2021-10-07
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
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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公开(公告)号：US20180294731A1
公开(公告)日：2018-10-11
申请号：US15944820
申请日：2018-04-04
Applicant: Delta Electronics (Shanghai) CO., LTD
Inventor： Haibin SONG , Jinfa ZHANG , Daofei XU
IPC: H02M3/335
CPC classification number: H02M3/33523 , H02M3/33569 , H02M2001/0009 , Y02B70/1475 , Y02B70/1491
Abstract: A control device applied to a flyback converter including an auxiliary switch includes: a current detector configured to detect an amplitude of a current 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 amplitude of the negative magnetizing current obtained by the current detector 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：US20250062605A1
公开(公告)日：2025-02-20
申请号：US18806272
申请日：2024-08-15
Applicant: Delta Electronics (Shanghai) Co.,Ltd.
Inventor： Yuxin ZHANG , Kehua MA , Daofei XU , Haitao ZHANG , Bingtao HU
Abstract: The present disclosure relates to a hot-plug protection method and a power supply device. The method includes, when the connection status between the power supply device and the to-be-charged device is detected as disconnected through the detection pin, turning off a switch assembly within a first time period, where the switch assembly is connected in series between the voltage converter of the power supply device and the connection port, and maintaining an output voltage of the voltage converter at a first level within a second time period, the first time period being shorter than the second time period.
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