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    SELF-OSCILLATING HIGH FREQUENCY POWER CONVERTER
    24.
    发明公开
    SELF-OSCILLATING HIGH FREQUENCY POWER CONVERTER 失效
    自振荡高频功率转换器

    公开(公告)号：EP0267906A1

    公开(公告)日：1988-05-25

    申请号：EP86903955.0

    申请日：1986-06-02

    申请人： AT&T Corp.

    发明人： BOWMAN, Wayne, Clifton ,  MALIK, Randhir, Singh ,  SEIDEL, Harold ,  SUITER, Weyman, Blanchard, Jr. ,  ZIESSE, Norman, Gerard

    IPC分类号： H02M3

    CPC分类号： H02M3/338 ,  H02M2007/4818 ,  Y02B70/1433 ,  Y02B70/1441

    摘要： Un convertisseur de puissance auto-oscillant met en oeuvre un commutateur de transistor de puissance MOSFET dont l'électrode de sortie est couplée à un réseau syntonisé qui limite efficacement, à des impulsions unipolaires périodiques, la forme d'onde de tension passant par le commutateur de puissance. Le commutateur du transistor peut être utilisé à une fréquence radio élevée de sorte que sa capacitance inter-électrode drain/porte est suffisante pour englober le seul cheminement de rétroréaction sustentateur oscillatoire du convertisseur. Un réseau récurrent réactif qui est inductif à la fréquence de fonctionnement couple les électrodes porte/source du commutateur du transistor et comporte une capacitance variable servant de moyen pour ajuster la réactance d'ensemble, et donc la fréquence de commutation du convertisseur afin d'assurer une régulation de la tension. Un redresseur à résonance comprend un circuit syntonisé destiné à moduler la forme d'onde de tension passant par les diodes de redressement en fonction d'une inversion temporelle de la forme d'onde du commutateur de puissance.

    摘要翻译： 自激振荡功率转换器采用MOSFET功率晶体管开关，其输出电极耦合到调谐阵列，该调谐阵列有效地限制了通过开关的周期性单极脉冲的电压波形。 的权力。 晶体管的开关可用于高射频，因此其电极间漏极/栅极电容足以涵盖振荡器唯一的振荡电梯回射路径。 在工作频率下感应的无功循环网络耦合晶体管开关的栅极/源极电极，并具有可变电容，用作调整总电抗的手段，并因此确保转换器的开关频率以确保 电压调节。 谐振整流器包括调谐电路，用于基于功率开关波形的时间反转来调制通过整流二极管的电压波形。

    SWITCHING POWER SUPPLY DEVICE
    26.
    发明公开
    SWITCHING POWER SUPPLY DEVICE 审中-公开

    公开(公告)号：EP2670038A4

    公开(公告)日：2018-01-24

    申请号：EP11857152

    申请日：2011-12-07

    申请人： MURATA MANUFACTURING CO

    发明人： HOSOTANI TATSUYA

    IPC分类号： H02M3/28 ,  H02M1/00 ,  H02M3/07 ,  H02M3/335 ,  H02M3/338

    CPC分类号： H02M3/33507 ,  H02M3/07 ,  H02M3/33576 ,  H02M3/338 ,  H02M2001/0058 ,  Y02B70/1491

    摘要： A secondary-side rectifier circuit includes an adder-rectifier circuit (80) that stores a voltage generated in a secondary winding in a capacitor as electrostatic energy in an on period of one of a high-side and low-side switching circuits (Q1) or (Q2), and adds the voltage in the capacitor and the voltage generated in the secondary winding and outputs the sum as a direct-current voltage during in an on period of the other of the high-side and low-side switching circuits (Q2) or (Q1). A switching control circuit (10) adjusts an output power to be output from the secondary-side rectifier circuit, by using on-period ratio control means for controlling a proportion of periods during which the respective high-side side and low-side switching elements (Q1, Q2) are brought into a conductive state. Accordingly, a switching power supply device with reduced size and increased power conversion efficiency is provided.

    LIGHT-EMITTING DIODE DRIVER CIRCUIT AND LED LIGHT SOURCE
    27.
    发明公开
    LIGHT-EMITTING DIODE DRIVER CIRCUIT AND LED LIGHT SOURCE 审中-公开
    LEUCHTDIODEN-TREIBERSCHALTUNG UND LED-LICHTQUELLE

    公开(公告)号：EP2660881A4

    公开(公告)日：2017-06-28

    申请号：EP11853617

    申请日：2011-12-27

    申请人： PANASONIC IP MAN CO LTD

    发明人： KURACHI TOSHIAKI ,  GOUDA KAZUO

    IPC分类号： H05B33/08 ,  F21K9/23 ,  H02M1/32 ,  H02M1/36 ,  H02M3/338

    CPC分类号： H05B33/0878 ,  F21K9/23 ,  F21V3/0409 ,  F21V3/0418 ,  F21V3/0436 ,  F21V17/10 ,  F21Y2115/10 ,  H02M1/36 ,  H02M3/338 ,  H05B33/0815 ,  H05B33/0824 ,  Y02B20/383

    摘要： Provided are a light-emitting diode driver circuit and an LED light source which are capable of reliably turning OFF an LED even when an input voltage having a value smaller than a predetermined value is supplied. A light-emitting diode driver circuit (1) for turning ON an LED (2) includes: an inverter (20) which outputs electric power for driving the LED (2); and an inverter control circuit (30) which controls an operation of the inverter (20), and when a DC voltage applied to the inverter control circuit (30) has a value smaller than the predetermined value, the inverter control circuit (30) stops the operation of the inverter (20).

    摘要翻译： 本发明提供一种发光二极管驱动电路以及LED光源，即使供给小于规定值的输入电压，也能够可靠地使LED熄灭。 用于使LED（2）导通的发光二极管驱动电路（1）包括：输出用于驱动LED（2）的电力的逆变器（20）; 和逆变器控制电路（30），该逆变器控制电路（30）控制逆变器（20）的操作，并且当施加到逆变器控制电路（30）的DC电压具有小于预定值的值时，逆变器控制电路 逆变器（20）的操作。

    HIGH VOLTAGE DC/DC CONVERTER WITH CASCADED RESONANT TANKS
    29.
    发明公开
    HIGH VOLTAGE DC/DC CONVERTER WITH CASCADED RESONANT TANKS 有权
    与级联谐振TANK高压DC-DC转换器

    公开(公告)号：EP2719062A1

    公开(公告)日：2014-04-16

    申请号：EP11724204.0

    申请日：2011-06-08

    申请人： Alstom Technology Ltd

    发明人： WHITEHOUSE, Robert, Stephen

    IPC分类号： H02M3/07 ,  H02M3/338 ,  H02M7/10 ,  H02J3/36

    CPC分类号： H02M3/33507 ,  H02J3/36 ,  H02M3/07 ,  H02M3/3376 ,  H02M3/338 ,  H02M7/103 ,  Y02B70/1433 ,  Y02E60/60

    摘要： A converter, for use in high voltage direct and alternating current power transmission comprises a primary charge transfer converter. The charge transfer converter includes first and second primary terminals for connection to one or more electrical networks. The primary charge transfer converter also includes a plurality of charge transfer elements and a plurality of primary switching elements which are connected in a cascade circuit between the first and second primary terminals. Each charge transfer element includes at least one resonant circuit. The primary switching elements are operable to selectively cause charging and discharging of each resonant circuit to transfer charge between the charge transfer elements and thereby create a voltage difference between the first and second primary terminals.