AVERAGE INPUT CURRENT LIMIT METHOD AND APPARATUS THEREOF
    1.
    发明申请
    AVERAGE INPUT CURRENT LIMIT METHOD AND APPARATUS THEREOF 有权
    平均输入电流限制方法及其设备

    公开(公告)号:US20100026270A1

    公开(公告)日:2010-02-04

    申请号:US12183340

    申请日:2008-07-31

    IPC分类号: G05F5/00

    CPC分类号: H02M3/156 H02M2001/0009

    摘要: The embodiment of invention discloses an average input current limit method and apparatus thereof. The apparatus comprises a switching circuit, a current average circuit and a current limit circuit. The current average circuit samples the input current of the switching circuit and generates a signal representative of the average value of the input current. The current limit circuit limits the signal so as to limit the average value of the input current.

    摘要翻译: 本发明的实施例公开了一种平均输入电流限制方法及其装置。 该装置包括开关电路,电流平衡电路和限流电路。 当前平均电路对开关电路的输入电流进行采样,并产生代表输入电流平均值的信号。 电流限制电路限制信号,以限制输入电流的平均值。

    Average input current limit method and apparatus thereof
    2.
    发明授权
    Average input current limit method and apparatus thereof 有权
    平均输入电流限制方法及其装置

    公开(公告)号:US08525498B2

    公开(公告)日:2013-09-03

    申请号:US12183340

    申请日:2008-07-31

    IPC分类号: G05F1/00

    CPC分类号: H02M3/156 H02M2001/0009

    摘要: The embodiment of invention discloses an average input current limit method and apparatus thereof. The apparatus comprises a switching circuit, a current average circuit and a current limit circuit. The current average circuit samples the input current of the switching circuit and generates a signal representative of the average value of the input current. The current limit circuit limits the signal so as to limit the average value of the input current.

    摘要翻译: 本发明的实施例公开了一种平均输入电流限制方法及其装置。 该装置包括开关电路,电流平衡电路和限流电路。 当前平均电路对开关电路的输入电流进行采样,并产生代表输入电流平均值的信号。 电流限制电路限制信号,以限制输入电流的平均值。

    Input surge protection device using JFET
    3.
    发明授权
    Input surge protection device using JFET 有权
    输入浪涌保护器件使用JFET

    公开(公告)号:US08068321B2

    公开(公告)日:2011-11-29

    申请号:US12263106

    申请日:2008-10-31

    IPC分类号: H02H3/20 H02H9/04 H02H9/00

    摘要: An input surge suppression device and method that uses a simple JFET structure. The JFET has its gate clamped to a predetermined value, its the drain receives the input voltage from an input power source, its source is connected to the input of a down-stream device, and a resistor connected between the drain and the gate or between the source and the gate. Thus, when the drain voltage approximates the clamped gate voltage, the source voltage nearly equals the drain voltage. When the drain voltage rises above the clamped gate voltage, the source voltage is lower than the drain voltage. The downstream device may be a DC-DC converter and the gate is biased by the enable (EN) pin of a DC-DC converter.

    摘要翻译: 一种使用简单JFET结构的输入浪涌抑制器件和方法。 JFET的栅极被钳位到预定值,其漏极接收来自输入电源的输入电压,其源极连接到下游装置的输入端,以及连接在漏极与栅极之间或两者 源和门。 因此,当漏极电压接近钳位的栅极电压时,源极电压几乎等于漏极电压。 当漏极电压上升到钳位的栅极电压以上时,源极电压低于漏极电压。 下游设备可以是DC-DC转换器,并且门由DC-DC转换器的使能(EN)引脚偏置。

    INPUT SURGE PROTECTION DEVICE USING JFET
    4.
    发明申请
    INPUT SURGE PROTECTION DEVICE USING JFET 有权
    使用JFET的输入防护装置

    公开(公告)号:US20100110595A1

    公开(公告)日:2010-05-06

    申请号:US12263106

    申请日:2008-10-31

    IPC分类号: H02H9/04 H01L29/808

    摘要: An input surge suppression device and method that uses a simple JFET structure. The JFET has its gate clamped to a predetermined value, its the drain receives the input voltage from an input power source, its source is connected to the input of a down-stream device, and a resistor connected between the drain and the gate or between the source and the gate. Thus, when the drain voltage approximates the clamped gate voltage, the source voltage nearly equals the drain voltage. When the drain voltage rises above the clamped gate voltage, the source voltage is lower than the drain voltage. The downstream device may be a DC-DC converter and the gate is biased by the enable (EN) pin of a DC-DC converter.

    摘要翻译: 一种使用简单JFET结构的输入浪涌抑制器件和方法。 JFET的栅极被钳位到预定值,其漏极接收来自输入电源的输入电压,其源极连接到下游装置的输入端,以及连接在漏极与栅极之间或两者 源和门。 因此,当漏极电压接近钳位的栅极电压时,源极电压几乎等于漏极电压。 当漏极电压上升到钳位的栅极电压以上时,源极电压低于漏极电压。 下游设备可以是DC-DC转换器,并且门由DC-DC转换器的使能(EN)引脚偏置。

    Two-stage voltage regulators with adjustable intermediate bus voltage, adjustable switching frequency, and adjustable number of active phases
    8.
    发明授权
    Two-stage voltage regulators with adjustable intermediate bus voltage, adjustable switching frequency, and adjustable number of active phases 失效
    两级电压调节器,可调节中间总线电压,可调开关频率和可调节数量的有源相

    公开(公告)号:US07071660B2

    公开(公告)日:2006-07-04

    申请号:US11018920

    申请日:2004-12-22

    IPC分类号: H02M3/158

    摘要: A two-stage power converter that dynamically adjusts to output current requirements includes a first stage regulator that provides power to a second stage regulator. The first stage can be a buck converter, and the second stage can be a multiple-phase buck converter. The output voltage of the first stage (intermediate bus voltage Vbus) is varied according to the load current to optimize conversion efficiency. To provide maximum efficiency, the Vbus voltage is increased as load current increases. The Vbus voltage provided by the first stage can be varied by duty cycle or operating frequency control. In another embodiment, the switching frequency of the second stage is varied as output current changes so that output current ripple is held constant. In an embodiment employing a multiple-phase buck converter in the second stage, the number of operating phases are varied as output current changes.

    摘要翻译: 动态调节输出电流要求的两级功率转换器包括为第二级调节器提供电源的第一级稳压器。 第一级可以是降压转换器,第二级可以是多相降压转换器。 第一级(中间总线电压Vbus)的输出电压根据负载电流而变化,以优化转换效率。 为了提供最大的效率,Vbus电压随着负载电流的增加而增加。 第一级提供的Vbus电压可以通过占空比或工作频率控制来改变。 在另一个实施例中,当输出电流改变时,第二级的开关频率变化,使得输出电流纹波保持恒定。 在第二级采用多相降压转换器的实施例中,随着输出电流的变化,工作阶段的数量变化。

    Discharge lamp lighting control device
    9.
    发明授权
    Discharge lamp lighting control device 失效
    放电灯照明控制装置

    公开(公告)号:US07391165B2

    公开(公告)日:2008-06-24

    申请号:US10553846

    申请日:2004-04-22

    IPC分类号: H05B41/16

    摘要: A discharge lamp lighting control device (100) having a DC power converter, a power factor improving power converter (1), a polarity reversing circuit (2), a starter circuit (3), and a controller (4). The power factor improving power converter 1 includes a switching device S, a power factor improver, and a power converter. The power factor improver operates to smooth a rectified voltage by storing energy in a first inductive device L1 and by discharging energy from a second inductive device L2, in which the first and second inductive devices are magnetically coupled together. The storing and discharging is performed by turning ON and OFF the switching device S. A predetermined DC voltage is converted by energy stored and discharged by a third inductive device L3 in response to the turning ON and OFF of the switching device S.

    摘要翻译: 具有DC功率转换器,功率因数改善功率转换器(1),极性反转电路(2),起动电路(3)和控制器(4)的放电灯点亮控制装置(100)。 功率因数改善功率转换器1包括开关器件S,功率因数改进器和功率转换器。 功率因数改进器通过将能量存储在第一感应装置L 1中并通过从第二感应装置L 2中释放能量来平滑整流电压,其中第一和第二感应装置磁耦合在一起。 通过接通和断开开关装置S进行存储和放电。响应于开关装置S的接通和断开,通过由第三感应装置L 3存储和放电的能量来转换预定的DC电压。

    Multi-phase interleaving isolated DC/DC converter
    10.
    发明授权
    Multi-phase interleaving isolated DC/DC converter 失效
    多相交错隔离式DC / DC转换器

    公开(公告)号:US06944033B1

    公开(公告)日:2005-09-13

    申请号:US10457907

    申请日:2003-06-10

    IPC分类号: H02M3/335

    CPC分类号: H02M3/1584

    摘要: A converter has a transformer with primary and secondary windings each having n coils in a series-series arrangement connected to primary and secondary sides. The primary side has n primary legs each having a top switch and a bottom switch and connected to the primary winding therebetween. The secondary side has n secondary legs, each secondary leg has a synchronous rectifier switch and an output filter inductor connected to the secondary winding therebetween. A complimentary control for the primary side comprising a gate driver transformer with primary winding in series with a DC blocking capacitor connected to a drain and a source of the top switch of each primary leg, and a gate drive transformer, for each primary leg, with secondary winding containing a leakage inductor and in series with a DC blocking capacitor and a damping resistor connected to gate and source of the secondary side synchronous rectifier.

    摘要翻译: A转换器具有初级和次级绕组的变压器,每个绕组具有连接到初级和次级侧的串联布置的n个线圈。 初级侧具有n个主脚,每个主腿具有顶部开关和底部开关,并连接到它们之间的初级绕组。 次级侧具有n个辅助支路,每个辅助支路具有同步整流开关和连接到它们之间的次级绕组的输出滤波电感器。 对于初级侧的补偿控制包括具有初级绕组的栅极驱动器变压器,其与连接到每个主支脚的顶部开关的漏极和源极的隔直流电容器串联,以及用于每个主支路的栅极驱动变压器,具有 次级绕组包含一个漏电感器,并与一个隔直流电容器和一个连接到次级侧同步整流器的栅极和源极的阻尼电阻串联。