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    • 1. 发明申请
    • DRIVE CIRCUIT FOR HIGH-BRIGHTNESS LIGHT EMITTING DIODES
    • 用于高亮度发光二极管的驱动电路
    • US20110140630A1
    • 2011-06-16
    • US12638218
    • 2009-12-15
    • Eleftherios DoudousakisCiro Lee Sirio
    • Eleftherios DoudousakisCiro Lee Sirio
    • H05B37/02G05F1/613H02H9/06H02M7/155
    • H02M3/156H05B33/0815
    • A drive circuit includes a DC/DC converter, an outer control loop providing an output voltage representing a comparison between a load current and a reference voltage, a multiplier multiplying the outer control loop output voltage with a sample of the rectified output and provide an output current, a current amplifier comparing an input line current sample and the multiplier output current, a comparator driving the switch with a modulated output based on the current amplifier output and a sawtooth reference, and an upper voltage limit loop having an output in electrical communication with the outer control loop output, wherein the outer control loop output voltage is impacted by the upper voltage limit loop output during a zero load scenario. The drive circuit also includes a line voltage transformer and a lightning suppression circuit coupled to the voltage rectifier output.
    • 驱动电路包括DC / DC转换器,提供表示负载电流和参考电压之间的比较的输出电压的外部控制环路,将外部控制环路输出电压与整流输出的采样值相乘的乘法器,并提供输出 电流,比较输入线电流采样和乘法器输出电流的电流放大器,比较器,基于电流放大器输出和锯齿参考,驱动具有调制输出的开关,以及具有与 外部控制环路输出,其中外部控制环路输出电压在零负载情况期间受到上限电压限制环路输出的影响。 驱动电路还包括线路电压互感器和耦合到电压整流器输出的避雷电路。
    • 4. 发明授权
    • Drive circuit for high-brightness light emitting diodes
    • 驱动电路用于高亮度发光二极管
    • US08164275B2
    • 2012-04-24
    • US12638218
    • 2009-12-15
    • Eleftherios DoudousakisCiro Lee Sirio
    • Eleftherios DoudousakisCiro Lee Sirio
    • H05B37/02
    • H02M3/156H05B33/0815
    • A drive circuit includes a DC/DC converter, an outer control loop providing an output voltage representing a comparison between a load current and a reference voltage, a multiplier multiplying the outer control loop output voltage with a sample of the rectified output and provide an output current, a current amplifier comparing an input line current sample and the multiplier output current, a comparator driving the switch with a modulated output based on the current amplifier output and a sawtooth reference, and an upper voltage limit loop having an output in electrical communication with the outer control loop output, wherein the outer control loop output voltage is impacted by the upper voltage limit loop output during a zero load scenario. The drive circuit also includes a line voltage transformer and a lightning suppression circuit coupled to the voltage rectifier output.
    • 驱动电路包括DC / DC转换器,提供表示负载电流和参考电压之间的比较的输出电压的外部控制环路,将外部控制环路输出电压与整流输出的采样值相乘的乘法器,并提供输出 电流,比较输入线电流采样和乘法器输出电流的电流放大器,比较器,基于电流放大器输出和锯齿参考,驱动具有调制输出的开关,以及具有与 外部控制环路输出,其中外部控制环路输出电压在零负载情况期间受到上限电压限制环路输出的影响。 驱动电路还包括线路电压互感器和耦合到电压整流器输出的避雷电路。
    • 5. 发明授权
    • Achieving ZVS in a two quadrant converter using a simplified auxiliary circuit
    • 使用简化的辅助电路在两象限转换器中实现ZVS
    • US07869226B2
    • 2011-01-11
    • US12415903
    • 2009-03-31
    • Ciro Lee SirioEleftherios Doudousakis
    • Ciro Lee SirioEleftherios Doudousakis
    • H02M3/335
    • H02M7/538H02M1/38H02M3/1588H02M2007/4811Y02B70/1466
    • A zero voltage switch half bridge converter comprises a first and second diode series diodes, parallel with a voltage source. A first terminal of an inductor is joined to the diode junction. A first semiconductor auxiliary switch connected in series between the voltage source and a third diode, which is in series with a fourth diode connected to a second semiconductor auxiliary switch. First and second semiconductor main switches are connected in series and in parallel with the voltage supply. A capacitive voltage divider connected across the voltage source, wherein a second terminal of the inductor is connected to junction of the main switches and a midpoint of the capacitive voltage divider. A control circuit is configured to provide respective control signals to at least the first semiconductor auxiliary switch and the second semiconductor auxiliary switch.
    • 零电压开关半桥转换器包括与电压源并联的第一和第二二极管串联二极管。 电感器的第一端子连接到二极管结。 串联连接在电压源和与连接到第二半导体辅助开关的第四二极管串联的第三二极管的第一半导体辅助开关。 第一和第二半导体主开关串联并联电压。 一个连接在电压源上的电容分压器,其中电感器的第二端连接到主开关的结和电容分压器的中点。 控制电路被配置为向至少第一半导体辅助开关和第二半导体辅助开关提供相应的控制信号。
    • 8. 发明申请
    • Thermal Management System and Method
    • 热管理系统和方法
    • US20130050954A1
    • 2013-02-28
    • US13659066
    • 2012-10-24
    • TDK-Lambda Americas, Inc.
    • L. Ray Albrecht, IIIGordon K.Y. LeeJin He
    • H05K7/20H05K3/34
    • H05K7/20463H05K1/0203H05K1/0204H05K1/144H05K7/20454H05K7/205H05K2201/042H05K2201/10303H05K2201/10409H05K2201/1056H05K2201/10871Y10T29/49144
    • A thermal management system/method allowing efficient electrical/thermal attachment of heat sourcing PCBs to heat sinking PCBs using reflow/wave/hand soldering is disclosed. The disclosed system/method may incorporate a combination of support pins, spacer pads, and/or contact paste that mechanically attaches a heat sourcing PCB (and its associated components) to a heat sinking PCB such that thermal conductivity between the two PCBs can be optimized while simultaneously allowing controlled electrical conductivity between the two PCBs. Controlled electrical isolation between the two PCBs is provided for using spacer pads that may also be thermal conductive. Contact paste incorporated in some embodiments permits enhanced conductivity paths between the heat sourcing PCB, a thermally conductive plate mounted over the heat sourcing PCB, and the heat sinking PCB. The use of self-centering support pins incorporating out-gassing vents in some embodiments allows reflow/wave/hand soldering as desired.
    • 公开了一种热管理系统/方法,其允许使用回流/波/手焊接将散热PCB的热源PCB与电源/热附件进行高效电连接。 所公开的系统/方法可以包括将热源PCB(及其相关部件)机械连接到散热PCB上的支撑销,间隔垫和/或接触膏的组合,使得可以优化两个PCB之间的导热性 同时允许两个PCB之间的受控电导率。 两个PCB之间的受控电气隔离被提供用于使用也可以是导热的间隔垫。 在一些实施例中结合的接触膏允许加热PCB,安装在热源PCB上的导热板和散热PCB之间的增强的导电路径。 在一些实施例中,使用包含排气孔的自定心支撑销允许根据需要进行回流/波/手焊。