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公开(公告)号：US20250070639A1
公开(公告)日：2025-02-27
申请号：US18619056
申请日：2024-03-27
Applicant: Delta Electronics (Shanghai) Co.,Ltd.
Inventor： Litao XIA , Xinmin BAI , Jinfa ZHANG , Bo WEN , Zhiyu SHEN , PETER MANTOVANELLI BARBOSA
Abstract: The disclosure discloses a power conversion system and a control method, the control method includes: providing a power conversion module which includes a damping circuit and a first capacitor connected in series, and a controller, wherein the damping circuit includes a first inductor, a first switch, a second switch, and a second capacitor; obtaining a first current reference value according to an input voltage of the power conversion module, a voltage of the second capacitor, and a voltage reference value; obtaining a second current reference value according to the input voltage of the power conversion module and a current signal related to an input current; and outputting a driving signal according to an inductor current flowing through the first inductor and an inductor current reference value, wherein the current reference value is obtained according to the first current reference value and the second current reference value.
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公开(公告)号：US20220406515A1
公开(公告)日：2022-12-22
申请号：US17577341
申请日：2022-01-17
Applicant: Delta Electronics (Shanghai) Co., Ltd.
Inventor： Haijun YANG , Tianding HONG , Warda GUL , Zengyi LU , Minli JIA , Jinfa ZHANG
Abstract: The present disclose provides a magnetic assembly and a power module. In one aspect, the magnetic assembly includes a magnetic core having a first magnetic leg and a second magnetic leg spatially separated from the first magnetic leg to define a spatial channel therebetween, and a winding assembly comprising a first winding, a second winding, and a third winding. The first and second windings are wound around the first magnetic leg with at least a part of the first and second windings being accommodated within the spatial channel. The third winding is wound around the first and second magnetic legs. The first winding is disposed between the first magnetic leg and the second winding. The second winding is disposed between the first winding and the third winding.
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公开(公告)号：US20220385190A1
公开(公告)日：2022-12-01
申请号：US17659655
申请日：2022-04-18
Applicant: Delta Electronics (Shanghai) Co.,Ltd.
Inventor： Hairui XU , Haibin SONG , Daofei XU , Jinfa ZHANG
Abstract: The invention discloses a converter adaptable to a wide range output voltage and a control method thereof. The converter comprises a PWM half-bridge circuit. The control method comprises the steps of: controlling the PWM half-bridge circuit to enter into a discontinuous conduction mode by regulating a switching frequency; when the PWM half-bridge circuit is operated in the discontinuous conduction mode, oscillation occurs among the output inductor, a magnetizing inductor of the transformer and a parasitic capacitor of the PWM half-bridge circuit, and when a center point voltage of the primary switching bridge arm reaches a valley or a peak, turning on the corresponding power switch. The invention reduces switching loss by controlling the corresponding power switch in the PWM half-bridge circuit to turn on when a voltage across the power switch is oscillated to valley.
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公开(公告)号：US20220208439A1
公开(公告)日：2022-06-30
申请号：US17551628
申请日：2021-12-15
Applicant: Delta Electronics (Shanghai) CO., LTD
Inventor： Tianding HONG , Zengyi LU , Haijun YANG , Jinfa ZHANG
Abstract: A magnetic component includes two covers, two magnetic columns between the two covers, a winding frame and windings. Each of the magnetic columns includes at least three magnetic blocks. Spacers are arranged between two adjacent magnetic blocks and/or between the magnetic block and the cover. The spacers form air gaps of a magnetic circuit of the magnetic component. The winding frame includes two extension parts and base arranged at ends of the two extension parts. A limiting part is provided on the base. The windings are arranged around the extension parts, each of the windings includes a winding wire and at least one lead terminal at an end of the winding wire. The winding wire of the winding is a flat wire, and a winding mode of the flat wire around the extension part is a vertical winding; the at least one lead terminal is limited by the limiting part.
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公开(公告)号：US20210358673A1
公开(公告)日：2021-11-18
申请号：US17322922
申请日：2021-05-18
Applicant: Delta Electronics (Shanghai) Co., Ltd.
Inventor： Zengyi LU , Haijun YANG , Shiwei LIU , Jinfa ZHANG
Abstract: The disclosure provides a magnetic assembly and a power supply apparatus. The magnetic assembly of the present disclosure includes: a first magnetic core, a plurality of windings, a housing and a second magnetic core, where the first magnetic core has a winding area, and the plurality of windings are wound with an interval on the winding area of the first magnetic core; the housing has an accommodating cavity, and at least part of the plurality of windings is accommodated in the accommodating cavity, and the second magnetic core is arranged between a cavity wall of the accommodating cavity and the plurality of windings. According to the present disclosure, parasitic parameters such as leakage inductance of the magnetic assembly are relatively stable, and the power supply efficiency is improved and higher.
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Patent Agency Ranking
公开(公告)号：US20210313897A1
公开(公告)日：2021-10-07
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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公开(公告)号：US20210226440A1
公开(公告)日：2021-07-22
申请号：US17104119
申请日：2020-11-25
Applicant: Delta Electronics (Shanghai) CO., LTD
Inventor： Guoqiao SHEN , Jinfa ZHANG , Yuhu ZHOU
Abstract: The invention discloses an overcurrent protection circuit, coupled to a DC bus between first and second DC ends, the DC bus including positive bus and negative bus, and the circuit including: a main protection branch connected in series with the positive or negative bus, and including first and second protection switches connected in series and connected to a first node; a freewheeling switch branch having two ends, one end being connected to the first node, the other end being connected to an opposite bus to the main protection branch; a detection unit coupled to the DC bus for detecting a voltage or a current of the DC bus to output an overcurrent detection signal; and a control unit coupled to the detection unit and the main protection branch, and configured to control the main protection branch according to the overcurrent detection signal.
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公开(公告)号：US20200014303A1
公开(公告)日：2020-01-09
申请号：US16455732
申请日：2019-06-27
Applicant: Delta Electronics (Shanghai) Co., Ltd.
Inventor： Haibin SONG , Daofei XU , Jinfa ZHANG
Abstract: The present invention discloses a method and an apparatus for controlling a flyback converter, the flyback converter including a main switch, a transformer and an auxiliary switch. The method includes: obtaining a first voltage signal and a second voltage signal, the first voltage signal representing an input voltage of the flyback converter, and the second voltage signal representing an output voltage of the flyback converter; controlling turn-on of the auxiliary switch, wherein the turn-on time period of the auxiliary switch is determined according to the first voltage signal and the second voltage signal; and turning on the main switch at ZVS condition, wherein the main switch is turned on at the time delayed for a duration of a dead time after turning off of the auxiliary switch.
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公开(公告)号：US20190311846A1
公开(公告)日：2019-10-10
申请号：US16360185
申请日：2019-03-21
Applicant: Delta Electronics (Shanghai) CO., LTD
Inventor： Liangliang REN , Shiwei LIU , Hongbao WANG , Dezhi JIAO , Zengyi LU , Jinfa ZHANG
Abstract: A transformer is disclosed, including a magnetic core, a bobbin, a primary winding wound around the bobbin, at least a first secondary winding and a second secondary winding and at least one turn of coil of the first secondary winding is adjacent to at least one turn of coil of the second secondary winding, and the first secondary winding and the second secondary winding are applied in a full-wave rectifier circuit. A leakage inductance groove is provided between a primary winding groove for winding the primary winding and a secondary winding groove for winding the secondary winding for isolating the primary winding and the secondary winding.
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公开(公告)号：US20190243431A1
公开(公告)日：2019-08-08
申请号：US16240802
申请日：2019-01-07
Applicant: Delta Electronics (Shanghai) Co.,Ltd.
Inventor： Peiai YOU , Hao SUN , Jinfa ZHANG
CPC classification number: G06F1/20 , H02M11/00 , H04B15/005 , H05K7/20154 , H05K7/20263
Abstract: A power conversion apparatus is provided, which comprises a housing, a main board, a first electromagnetic filtering board, a second electromagnetic filtering board, a signal board, a capacitor board, and a heat-dissipation module. The housing includes a heat-dissipation wall and a coolant runner. The main board is disposed upon the housing and comprises a first surface facing the housing and a power device. The heat-dissipation module includes an thermal conductive insulating sheet adhered to the heat-dissipation wall and an elastic clamp. When the main board approaches the housing to clamp the power device in the accommodating space between the elastic clamp and the thermal conductive insulating sheet, the power device is pressed against by the elastic clamp and thus adhered to the thermal conductive insulating sheet, so that the power device is thermally coupled to the heat-dissipation wall and the coolant runner via the thermal conductive insulating sheet.
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