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    AC/DC flyback converter with improved power factor and reduced switching loss
    22.
    发明授权
    AC/DC flyback converter with improved power factor and reduced switching loss 失效
    AC / DC反激式转换器具有改善的功率因数和降低的开关损耗

    公开(公告)号：US5991172A

    公开(公告)日：1999-11-23

    申请号：US33005

    申请日：1998-03-02

    申请人： Milan M. Jovanovic ,  Laszlo Huber

    发明人： Milan M. Jovanovic ,  Laszlo Huber

    IPC分类号： H02M1/00 ,  H02M1/42 ,  H02M3/335

    CPC分类号： H02M1/4258 ,  H02M3/33538 ,  Y02B70/126

    摘要： A new single stage, single switch input current shaping circuit features substantially reduced turn-on switching losses of the switch in the flyback-converter. In this technique, the turn-on switching losses due to the discharge of the output capacitance of the switch are reduced by turning on the switch when its voltage is minimal or close to the minimal. To achieve the turn-on loss reduction for a wide range of line and load conditions, the flyback-converter stage is continuously operated at the boundary of the CCM and DCM by employing a variable-frequency control. In this technique the boost inductor can work either in the DCM or the CCM. The wide-bandwidth, variable-frequency control is implemented by detecting the onset of the DCM/CCM boundary and, subsequently, turning the switch on at the minimum switch voltage. The switch is turned off when the increasing primary current reaches a reference level set by the output-voltage feedback control circuit.

    摘要翻译： 新型单级单开关输入电流整形电路在反激式转换器中具有大大降低的开关开关损耗。 在这种技术中，由于开关的输出电容放电导致的导通开关损耗通过在其电压最小或接近最小时接通开关来减小。 为了在宽范围的线路和负载条件下实现导通损耗降低，反激式转换器级通过采用可变频率控制在CCM和DCM的边界处连续工作。 在这种技术中，升压电感可以工作在DCM或CCM中。 通过检测DCM / CCM边界的开始，然后在最小开关电压下使开关接通，实现宽带宽，可变频率控制。 当增加的初级电流达到由输出电压反馈控制电路设置的参考电平时，该开关被关断。

    Digitally controlled three-phase PFC rectifier
    23.
    发明授权
    Digitally controlled three-phase PFC rectifier 有权
    数字控制三相PFC整流器

    公开(公告)号：US08035536B2

    公开(公告)日：2011-10-11

    申请号：US11937459

    申请日：2007-11-08

    申请人： Zhen Z. Ye ,  Milan M. Jovanovic

    发明人： Zhen Z. Ye ,  Milan M. Jovanovic

    IPC分类号： H03M5/02

    CPC分类号： H02M1/4233 ,  Y02B70/126 ,  Y02P80/112

    摘要： A robust decoder generates an output state from input signals related to the line-voltage signals of a three-phase power system, using a segment identification method based on zero-crossings derived from line-voltage difference signals. The robust decoder includes a basic decoder that provides a current output state based on the input signals, a state table that provides a presumed previous state based on the current output state of the basic decoder, a binary feed back loop including a state element for storing a previous output state, and a selector for providing the output state based on the stored previous output state and the presumed previous state. The robust decoder may be implemented as hardware or software in a digital power converter. Such a digital power converter may include boost inductors each receiving an input line voltage signal from the three-phase power system to provide phase voltage signals, switches receiving the phase voltage signals to provide an intermediate voltage signal, the plurality of switches each being control by a driving signal, an output circuit coupled to the intermediate voltage signal to provide a rectified output voltage signal for digital power converter, and a digital control circuit receiving the input line voltages and the output voltage signal, the digital control circuit generating the driving signals to control the switches. The switches may be configured according to a state machine.

    摘要翻译： 稳健的解码器使用基于从线电压差信号导出的过零点的段识别方法，从与三相电力系统的线路电压信号相关的输入信号产生输出状态。 鲁棒解码器包括基于输入信号提供当前输出状态的基本解码器，基于基本解码器的当前输出状态提供推定的先前状态的状态表，包括用于存储的状态元素的二进制反馈回路 先前的输出状态，以及选择器，用于基于存储的先前输出状态和推测的先前状态来提供输出状态。 鲁棒解码器可以被实现为数字功率转换器中的硬件或软件。 这样的数字功率转换器可以包括升压电感器，每个升压电感器接收来自三相电力系统的输入线路电压信号以提供相电压信号，接收相电压信号的开关以提供中间电压信号，多个开关各自由 驱动信号，耦合到中间电压信号的输出电路，为数字功率转换器提供整流输出电压信号;以及数字控制电路，接收输入线电压和输出电压信号，数字控制电路产生驱动信号 控制开关。 开关可以根据状态机配置。

    SWITCH-MODE POWER SUPPLY HAVING REDUCED AUDIBLE NOISE
    24.
    发明申请
    SWITCH-MODE POWER SUPPLY HAVING REDUCED AUDIBLE NOISE 有权
    具有减少可听噪声的开关电源

    公开(公告)号：US20110175584A1

    公开(公告)日：2011-07-21

    申请号：US12689556

    申请日：2010-01-19

    申请人： Laszlo Huber ,  Milan M. Jovanovic ,  Chien-Chung Chang

    发明人： Laszlo Huber ,  Milan M. Jovanovic ,  Chien-Chung Chang

    IPC分类号： G05F1/10

    CPC分类号： H02M3/158 ,  H02M3/156

    摘要： A power supply having an input and an output, includes a power converter coupled between the input and output of the power supply including at least one switch that is controlled by comparing a sensed voltage, the sensed voltage corresponding to a current flowing through the switch, to a reference voltage. A controller, in response to a change detected in a switching frequency of the switch, reduces audible noise generated by the power supply by at least one of: adjusting the reference voltage; adjusting the current sense voltage; or adjusting a resistance used to generate the sensed voltage.

    摘要翻译： 具有输入和输出的电源包括耦合在电源的输入和输出之间的功率转换器，其包括至少一个开关，所述至少一个开关通过比较感测的电压，对应于流过开关的电流的感测电压， 到参考电压。 控制器响应于在开关的开关频率中检测到的变化，通过以下至少一个来降低由电源产生的可听噪声：调整参考电压; 调整电流检测电压; 或调整用于产生感测电压的电阻。

    POWER MANAGEMENT SYSTEM CAPABLE OF SAVING POWER AND OPTIMIZING OPERATING EFFICIENCY OF POWER SUPPLIES FOR PROVIDING POWER WITH BACK-UP OR REDUNDANCY TO PLURAL LOADS
    25.
    发明申请
    POWER MANAGEMENT SYSTEM CAPABLE OF SAVING POWER AND OPTIMIZING OPERATING EFFICIENCY OF POWER SUPPLIES FOR PROVIDING POWER WITH BACK-UP OR REDUNDANCY TO PLURAL LOADS 有权
    电力管理系统能够节省电力，优化电力供应的运行效率，以提供备用或冗余支持多种负载

    公开(公告)号：US20090271642A1

    公开(公告)日：2009-10-29

    申请号：US12427192

    申请日：2009-04-21

    申请人： Bruce C. H. Cheng ,  Chi-Hsing Huang ,  Milan M. Jovanovic

    发明人： Bruce C. H. Cheng ,  Chi-Hsing Huang ,  Milan M. Jovanovic

    IPC分类号： G06F1/00

    CPC分类号： H02J1/102 ,  G06F1/263 ,  H02J1/14 ,  Y10T307/305 ,  Y10T307/391 ,  Y10T307/406 ,  Y10T307/50 ,  Y10T307/549 ,  Y10T307/555

    摘要： The present invention relates to a power management system comprising at least one power management subsystem. Each power management subsystem comprises a first power module coupled to a first load and comprising at least one first power supply for supplying power to the first load; a second power module coupled to a second load and comprising at least one second power supply, wherein at least one second power supply is retractably installed in the second power module and selectively coupled to the second load; and a pass-through module comprising at least one pass-through unit retractably installed in the second power module to replace with the at least one second power supply and selectively connecting the first power module to the second load for allowing the first power module to supply power to the second load.

    摘要翻译： 电源管理系统技术领域本发明涉及包括至少一个电力管理子系统的电力管理系统。 每个电源管理子系统包括耦合到第一负载的第一电源模块，并且包括用于向第一负载供电的至少一个第一电源; 耦合到第二负载并且包括至少一个第二电源的第二电力模块，其中至少一个第二电源可缩回地安装在所述第二电力模块中并且选择性地耦合到所述第二负载; 以及直通模块，包括至少一个直通单元，其可收缩地安装在所述第二电力模块中以替换所述至少一个第二电源，并且将所述第一电力模块选择性地连接到所述第二负载，以允许所述第一电力模块供应 电力到第二负载。

    Half-bridge zero-voltage switched multi-resonant converters
    26.
    发明授权
    Half-bridge zero-voltage switched multi-resonant converters 失效
    半桥零电压开关多谐振转换器

    公开(公告)号：US4860184A

    公开(公告)日：1989-08-22

    申请号：US249930

    申请日：1988-09-27

    申请人： Wojciech A. Tabisz ,  Fred C. Lee ,  Milan M. Jovanovic

    发明人： Wojciech A. Tabisz ,  Fred C. Lee ,  Milan M. Jovanovic

    IPC分类号： H02M3/155 ,  H02M3/335 ,  H02M3/337

    CPC分类号： H02M3/337 ,  H02M3/155 ,  H02M3/335 ,  H02M3/33592 ,  Y02B70/1433 ,  Y02B70/1475

    摘要： A half-bridge zero-voltage-switched multi-resonant converter. The converter basically comprises a device for converting an input voltage signal to a DC output signal to be imposed across a load. The device includes input terminals for receiving the input signal and output terminals for imposing the DC output signal across the load. Serially connected first and second switching assemblies are connected in parallel across the input terminals. Each of the first and second switching assemblies includes a transistor switch, a diode and a capacitor all arranged in parallel. The device further includes a transformer having a primary winding and serially connected first and second secondary windings. A first rectifier in parallel with a first resonant capacitor is used to connect the first secondary winding across the output terminals. Circuitry is provided for connecting the primary winding of the transformer to the input terminals and to the serial connection between the first and second switching assemblies. In order to complete the zero-voltage-switched multi-resonant converter for off-line use, a resonant circuit is formed with the first and second resonant capacitors and the total inductance of the primary winding of the transformer.

    摘要翻译： 半桥零电压开关多谐振转换器。 该转换器基本上包括用于将输入电压信号转换为跨负载施加的DC输出信号的装置。 该装置包括用于接收输入信号的输入端和用于在整个负载上施加直流输出信号的输出端。 串联的第一和第二开关组件在输入端子上并联连接。 第一和第二开关组件中的每一个包括并联布置的晶体管开关，二极管和电容器。 该装置还包括具有初级绕组和串联连接的第一和第二次级绕组的变压器。 与第一谐振电容器并联的第一整流器用于将第一次级绕组连接在输出端子上。 提供了用于将变压器的初级绕组连接到输入端子和第一和第二开关组件之间的串联连接的电路。 为了完成用于离线使用的零电压开关多谐振转换器，谐振电路与第一和第二谐振电容器和变压器初级绕组的总电感一起形成。

    POWER SUPPLY HAVING AN AUXILIARY POWER STAGE FOR SUSTAINING SUFFICIENT POST IGNITION CURRENT IN A DC LAMP
    27.
    发明申请
    POWER SUPPLY HAVING AN AUXILIARY POWER STAGE FOR SUSTAINING SUFFICIENT POST IGNITION CURRENT IN A DC LAMP 有权
    具有辅助电源的电源，用于在直流电灯中持续有效的点火电流

    公开(公告)号：US20100253234A1

    公开(公告)日：2010-10-07

    申请号：US12416687

    申请日：2009-04-01

    申请人： Yuequan Hu ,  Milan M. Jovanovic

    发明人： Yuequan Hu ,  Milan M. Jovanovic

    IPC分类号： H05B41/04

    CPC分类号： H05B41/2881 ,  H05B41/388

    摘要： The current invention provides a power supply that includes an igniter that generates an ignition voltage for igniting a DC lamp; an auxiliary power stage that outputs an auxiliary voltage for sustaining sufficient current in the DC lamp after the DC lamp is ignited; a voltage conversion stage coupled to the auxiliary power stage and generating a voltage at a level that is higher than the auxiliary voltage; and a switch that couples the auxiliary voltage to the DC lamp and the voltage conversion stage for a predefined period of time.

    摘要翻译： 本发明提供了一种电源，其包括产生用于点燃DC灯的点火电压的点火器; 辅助功率级，其在DC灯点燃之后输出用于在DC灯中维持足够电流的辅助电压; 电压转换级，耦合到辅助功率级，并产生高于辅助电压的电平; 以及将辅助电压耦合到DC灯和电压转换级一段预定时间段的开关。

    AC/DC flyback converter
    28.
    发明授权
    AC/DC flyback converter 有权
    AC / DC反激式转换器

    公开(公告)号：US06950319B2

    公开(公告)日：2005-09-27

    申请号：US10438265

    申请日：2003-05-13

    申请人： Laszlo Huber ,  Milan M. Jovanovic ,  Chien-Chung Chang

    发明人： Laszlo Huber ,  Milan M. Jovanovic ,  Chien-Chung Chang

    IPC分类号： H02M3/28 ,  H02M1/00 ,  H02M1/42 ,  H02M3/335 ,  H02H7/122

    CPC分类号： H02M1/4258 ,  Y02B70/126

    摘要： A single-stage input-current-shaping (S2ICS) flyback converter achieves substantially reduced conduction losses in the primary side of the S2ICS flyback converter by connecting a bypass diode between the positive terminal of a full-bridge rectifier and the positive terminal of an energy-storage capacitor. An effective current interleaving between an energy-storage inductor and the bypass diode is thus obtained in the S2ICS flyback converter around the peak of the rectified line voltage, resulting in a significantly reduced input-current ripple and reduced current stress on the switch. Further, by rearranging the rectifiers in the ICS part of the S2ICS flyback converter in such a way that the energy-storage capacitor and the ICS inductor are connected to the ac line voltage through only two rectifiers, one diode forward-voltage drop is eliminated, which results in a substantially reduced conduction loss in the primary-side rectifiers.

    摘要翻译： 单级输入电流整形（SO 2）ICS）反激式转换器通过连接旁路来实现在S 2 O 3 ICS反激式转换器的初级侧的显着降低的传导损耗 全桥整流器的正端子与储能电容器的正极之间的二极管。 因此，在整流线电压的峰值附近，在S²2ICS反激式转换器中获得了储能电感器和旁路二极管之间的有效电流交错，导致输入电流纹波明显减小， 降低开关上的电流应力。 此外，通过将储能电容器和ICS电感器仅通过两个整流器连接到交流线路电压的方式，通过重新排列S 2 SOS反激式转换器的ICS部分中的整流器， 消除了一个二极管正向压降，这导致初级侧整流器中的导通损耗明显降低。

    Novel zero-voltage-switching family of isolated converters
    29.
    发明授权
    Novel zero-voltage-switching family of isolated converters 失效
    新型零电压开关系列的隔离变换器

    公开(公告)号：US5325283A

    公开(公告)日：1994-06-28

    申请号：US896093

    申请日：1992-06-08

    申请人： Richard W. Farrington ,  Milan M. Jovanovic ,  Fred C. Lee

    发明人： Richard W. Farrington ,  Milan M. Jovanovic ,  Fred C. Lee

    IPC分类号： H02M3/335 ,  H02M3/337

    CPC分类号： H02M3/335 ,  H02M3/337 ,  Y02B70/1433

    摘要： An isolated zero-voltage-switching converter in which the magnetizing inductance of the isolating transformer is a resonant element and an open circuit is provided on the secondary side of the transformer during the time interval when both primary switches are off. When the secondary of the transformer is open, the magnetizing inductance is in series with the capacitances of the primary switches, thus forming a resonant circuit.

    摘要翻译： 隔离变压器的励磁电感是谐振元件的绝缘零电压开关变换器，并且在两个初级开关断开的时间间隔期间，在变压器的次级侧设置开路。 当变压器的次级开路时，励磁电感与初级开关的电容串联，从而形成谐振电路。