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    SWITCH-MODE POWER SUPPLY AND CONTROL APPARATUS OF THE SAME
    11.
    发明公开
    SWITCH-MODE POWER SUPPLY AND CONTROL APPARATUS OF THE SAME 审中-公开

    公开(公告)号：EP3381099A1

    公开(公告)日：2018-10-03

    申请号：EP16868022.1

    申请日：2016-11-24

    Applicant: BYD Company Limited

    Inventor： HOU, Yongjun ,  WANG, Wenqing

    IPC: H02H7/125 ,  H02M7/217 ,  H02M1/32 ,  H02H7/122 ,  H02H7/12 ,  H02M3/335

    CPC classification number: H02H7/1225 ,  H02H7/1216 ,  H02M1/32 ,  H02M3/156 ,  H02M3/33507 ,  H02M7/217

    Abstract: The present disclosure provides a control apparatus of a switch-mode power supply and a switch-mode power supply. In the control apparatus of the present disclosure, a short-circuit protection module is set, and when a switching transistor of the switch-mode power supply is turned on, and the short-circuit protection module detects that a voltage across a current sensing resistor of the switch-mode power supply is less than a predetermined value within a predetermined period, that is, the current sensing resistor is short-circuited, the short-circuit protection module generates a short-circuit protection signal, and a driving controller controls the switching transistor to turn off according to the protection signal, thereby switching off the control apparatus, preventing breakdown of the switch-mode power supply, and avoiding erroneous protection.

    COORDINATED DIMMER COMPATIBILITY FUNCTIONS
    13.
    发明公开
    COORDINATED DIMMER COMPATIBILITY FUNCTIONS 审中-公开

    公开(公告)号：EP3346593A1

    公开(公告)日：2018-07-11

    申请号：EP17200852.6

    申请日：2011-07-29

    Applicant: Philips Lighting Holding B.V.

    Inventor： MELANSON, John, L. ,  KING, Eric, J.

    IPC: H02M1/36 ,  H05B33/08 ,  H02M3/335 ,  H02M7/06 ,  H02M1/00

    CPC classification number: H02M7/06 ,  H02M1/36 ,  H02M3/22 ,  H02M3/33507 ,  H02M2001/0006 ,  H05B33/0815 ,  Y02B20/346 ,  Y10T307/352 ,  Y10T307/50

    Abstract: An electronic system (300) comprising a load (308) including one or more light emitting diodes, a power converter system (304) for providing compatibility between a dimmer (306) and the load (308), wherein the dimmer provides a dimmer voltage (VΦ_DIM) to the power converter system (304), the dimmer voltage comprising three states: A. an approximately zero volt crossing of the dimmer voltage (VΦ_DIM) of the dimmer (306) until a phase cut, leading edge of the dimmer voltage (VΦ_DIM); B. an end of state A until energy transferred to the load (308) is sufficient to meet at least one energy transfer parameter; and C. an end of state B until a beginning of a next state A, the electronic system (300) further comprising a controller (302, 402) for controlling the power converter system (304), characterized in that the controller (302, 402) comprises a low impedance path state controller (310, 404) configured to, for state A, enable a low impedance path (316) for a dimmer current of the dimmer (306), wherein the impedance of the low impedance path is sufficiently low to maintain a stable phase angle of the dimmer (306), a switch mode power conversion controller (312, 406) configured to, for state B, control power conversion by the power converter system (304) of the dimmer voltage; and control the power converter system to maintain the dimmer current above a current threshold and an inactive state controller (314, 408) configured to, for state C, enter an inactive state, wherein during the inactive state the low impedance path and the power conversion are disabled.

    SWITCHING POWER SUPPLY UNIT
    17.
    发明授权
    SWITCHING POWER SUPPLY UNIT 有权

    公开(公告)号：EP3203624B1

    公开(公告)日：2018-06-20

    申请号：EP17154214.5

    申请日：2017-02-01

    Applicant: TDK Corporation

    Inventor： NAKAHORI, Wataru

    IPC: H02M3/28

    CPC classification number: H02M3/33507 ,  H01F27/40 ,  H01F2027/408 ,  H01F2038/006 ,  H02M1/08 ,  H02M3/285 ,  H02M3/33569 ,  H02M2001/0054 ,  Y02B70/1491

    Abstract: A switching power supply unit includes an N-number (N: an integer of 2 or greater) of transformers; an N-number of inverter circuits; a rectifying smoothing circuit including a {2 × (N + 1)}-number of rectifying devices, a choke coil, and a capacitor; an additional winding disposed to be interlinked with each of magnetic paths formed in the N-number of transformers; and a driver. In the rectifying smoothing circuit, a (N + 1)-number of arms each have two of the rectifying devices, and are disposed in parallel to one another between the pair of output terminals, a secondary winding in each of the N-number of transformers is coupled between adjacent ones of the (N + 1)-number of arms to individually form an H-bridge coupling, and the additional winding is coupled in series to one or more of the secondary windings in the N-number of transformers.

    SWITCHING POWER SUPPLY UNIT
    18.
    发明授权
    SWITCHING POWER SUPPLY UNIT 有权

    公开(公告)号：EP3163735B1

    公开(公告)日：2018-06-20

    申请号：EP16195808.7

    申请日：2016-10-26

    Applicant: TDK Corporation

    Inventor： NAKAHORI, Wataru

    IPC: H02M3/28 ,  H02M3/335 ,  H02M3/337 ,  H02M1/00 ,  H02M7/48

    CPC classification number: H02M3/33507 ,  H02M3/3376 ,  H02M2001/0048 ,  H02M2001/0058 ,  Y02B70/1491

    Abstract: A switching power supply unit (1, 1A, 1B, 1C) includes input terminals (T1, T2), output terminals (T3, T4), first to third primary windings (311, 321, 331) and first to third secondary windings (312, 322, 332), a switching circuit (2, 2A, 2B, 2C), a rectifying smoothing circuit (4, 4A, 4C, 4D, 4E), and a driver (5). In the switching circuit (2, 2A, 2B, 2C), first and second switching devices (S1, S2), third and fourth switching devices (S3, S4), and first and second capacitors (C51, C52), coupled in series to one another, are disposed in parallel between the input terminals (T1, T2). In the rectifying smoothing circuit (4, 4A, 4C, 4D, 4E), first to third arms, each having two of rectifying devices (411, 412, 421, 422, 431, 432) disposed in series, are disposed in parallel between the output terminals (T3, T4), the first secondary winding (312) is coupled between the first and the second arms to form an H-bridge coupling, the second and the third secondary windings (322, 332) are coupled between the second and the third arms to form an H-bridge coupling, and a choke coil (Lch) is disposed between the first to the third arms and an output capacitor (Cout).

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