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。

公开(公告)号：US6147882A

公开(公告)日：2000-11-14

申请号：US215758

申请日：1998-12-19

申请人： Laszlo Huber ,  Jindong Zhang ,  Milan M. Jovanovic ,  Fred C. Lee

发明人： Laszlo Huber ,  Jindong Zhang ,  Milan M. Jovanovic ,  Fred C. Lee

IPC分类号： H02M1/00 ,  H02M1/10 ,  H02M1/42 ,  H02M1/12

CPC分类号： H02M1/4258 ,  H02M1/10 ,  Y02B70/126

摘要： A single-stage input-current-shaping (S.sup.2 ICS) converter of the present invention integrates a voltage-doubler-rectifier front-end with a DC/DC output stage. Two families of voltage-doubler S.sup.2 ICS converters are disclosed. In one family, a 2-terminal dither source is provided between a boost inductor and a common input terminal of a storage capacitor and the DC/DC output stage. The 2-terminal dither source includes two paths connected in parallel: a first path for charging and a second path for discharging the boost inductor at a high frequency (HF). In the other family, a 3-terminal dither source includes a third terminal coupled to a pulsating node of the DC/DC output stage. In the 3-terminal dither source, the HF charging path of the boost inductor is coupled between the boost inductor and the pulsating node of the DC/DC output stage, while the HF discharging path of the boost inductor is coupled between the boost inductor and the common input terminal of the storage capacitor and the DC/DC output stage. Due to the voltage-doubler-rectifier front-end, reduction of line-current harmonics can be achieved with a higher conversion efficiency, as compared to a corresponding S.sup.2 ICS converter with a conventional full-bridge rectifier. In addition, a converter of the present invention requires storage capacitors of a lower voltage rating and a smaller total capacitance than the conventional S.sup.2 ICS counterpart. The present invention thereby reduces the size and the cost of the power supply.

摘要翻译： 本发明的单级输入电流整形（S2ICS）转换器将倍压整流器前端与DC / DC输出级相集成。 公开了两个倍压器S2ICS转换器系列。 在一个系列中，在升压电感器和存储电容器的公共输入端子和DC / DC输出级之间提供2端子抖动源。 2端抖动源包括并联连接的两条路径：用于充电的第一路径和用于以高频（HF）放电升压电感器的第二路径。 在另一系列中，3端抖动源包括耦合到DC / DC输出级的脉动节点的第三端。 在三端抖动源中，升压电感器的HF充电路径耦合在升压电感器和DC / DC输出级的脉动节点之间，而升压电感器的HF放电路径耦合在升压电感器和 存储电容的公共输入端和DC / DC输出级。 由于电压 - 倍增器整流器前端，与具有常规全桥整流器的相应的S2ICS转换器相比，可以以更高的转换效率实现线路电流谐波的降低。 此外，本发明的转换器需要比传统的S2ICS对应物更低的额定电压和更小的总电容的存储电容器。 因此，本发明减小了电源的尺寸和成本。

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。

公开(公告)号：US20090244944A1

公开(公告)日：2009-10-01

申请号：US12410002

申请日：2009-03-24

申请人： Yungtaek Jang ,  Milan M. Jovanovic ,  Bruce C.H. Cheng

发明人： Yungtaek Jang ,  Milan M. Jovanovic ,  Bruce C.H. Cheng

IPC分类号： H02M7/06

CPC分类号： H02M3/158 ,  H02J7/345 ,  H02M3/33576 ,  Y02B40/90

摘要： A power converter system supplies power to one or more loads. The power converter system comprises at least one power converter operating at a desired efficiency; and a power storage system coupled to the at least one power converter for receiving power supplied from the at least one power converter and storing power therein when the at least one power converter operates at an efficiency that is below the desired efficiency.

摘要翻译： 电力转换器系统为一个或多个负载供电。 功率转换器系统包括以期望效率操作的至少一个功率转换器; 以及耦合到所述至少一个功率转换器的功率存储系统，用于当所述至少一个功率转换器以低于期望效率的效率工作时，接收从所述至少一个功率转换器提供的功率并将功率存储在其中。

公开(公告)号：US06906930B2

公开(公告)日：2005-06-14

申请号：US10608314

申请日：2003-06-26

申请人： Yungtaek Jang ,  Milan M. Jovanovic

发明人： Yungtaek Jang ,  Milan M. Jovanovic

IPC分类号： H02M1/34 ,  H02M3/24 ,  H02M3/335 ,  H02M3/337

CPC分类号： H02M1/34 ,  H02M3/3376 ,  H02M2001/342 ,  H02M2001/346 ,  Y02B70/1491

摘要： An isolated boost converter includes first and second switches that are switched simultaneously, a transformer and an energy storage capacitor on the primary side of the transformer for storing energy received from input power source. In one embodiment, when the first and second switches are closed, the energy in the capacitor is transferred to the output load while a boost inductor is charged, and when the first and second switches are open, the boost inductor provides energy from the input voltage source to supply the load and to charge the capacitor, In one embodiment, a third switch is provided to relieve the voltage stress on the secondary side.

摘要翻译： 隔离式升压转换器包括同时开关的第一和第二开关，变压器和变压器初级侧的储能电容器，用于存储从输入电源接收的能量。 在一个实施例中，当第一和第二开关闭合时，电容器中的能量被传送到输出负载，同时升压电感器被充电，并且当第一和第二开关断开时，升压电感器从输入电压 源提供负载并对电容器充电。在一个实施例中，提供第三开关以减轻次级侧的电压应力。

公开(公告)号：US5736842A

公开(公告)日：1998-04-07

申请号：US679601

申请日：1996-07-11

申请人： Milan M. Jovanovic

发明人： Milan M. Jovanovic

IPC分类号： H02M1/34 ,  H02M3/158 ,  H02M3/335 ,  H03K17/0814 ,  G05F1/56

CPC分类号： H02M1/34 ,  H02M3/158 ,  H02M3/33576 ,  H03K17/08142 ,  H02M2001/342 ,  Y02B70/1491

摘要： A circuit technique that substantially reduces the boost-converter losses caused by the reverse-recovery characteristics of the rectifier is described. The losses are reduced by inserting an inductor in the series path of the boost switch and the rectifier to control the di/dt rate of the rectifier during its turn-off. The energy from the inductor after the boost switch turn-off is returned to the input or delivered to the output via an active snubber. The same technique can be extended to any member of the PWM-converter family.

摘要翻译： 描述了基本上减少由整流器的反向恢复特性引起的升压转换器损耗的电路技术。 通过在升压开关和整流器的串联路径中插入电感器来减小整流器的损耗，以控制整流器关断期间的di / dt率。 升压开关关断后电感的能量返回到输入端，或通过主动缓冲器输出到输出端。 相同的技术可以扩展到PWM转换器系列的任何成员。

公开(公告)号：US08299773B2

公开(公告)日：2012-10-30

申请号：US12501031

申请日：2009-07-10

申请人： Yungtaek Jang ,  Milan M. Jovanovic ,  Yi-Hsin Leu ,  Ming-Tsung Hsieh ,  Wei-Hsin Wen ,  Chi-Hsing Huang

发明人： Yungtaek Jang ,  Milan M. Jovanovic ,  Yi-Hsin Leu ,  Ming-Tsung Hsieh ,  Wei-Hsin Wen ,  Chi-Hsing Huang

IPC分类号： G05F5/00 ,  G05F1/00

CPC分类号： H02M1/36 ,  H02M1/4225 ,  Y02B70/126

摘要： A power supply comprises an input voltage detector that detects a drop in input voltage that corresponds to an input voltage loss. A power converter is coupled to the input voltage detector. The power converter, which may be a boost converter or a power factor correction converter, has a switching device that is actuated in accordance with a duty cycle. A duty cycle adjuster is responsive to detection of the drop in the input voltage to adjust the duty cycle of the switching device in order to limit an input current surge through the switching device below a desired level after the input voltage returns.

摘要翻译： 电源包括输入电压检测器，其检测对应于输入电压损失的输入电压的下降。 功率转换器耦合到输入电压检测器。 功率转换器（其可以是升压转换器或功率因数校正转换器）具有根据占空比被致动的开关器件。 占空比调节器响应于检测输入电压的下降以调整开关器件的占空比，以便在输入电压返回之后将开关器件的输入电流浪涌限制在期望的电平以下。

公开(公告)号：US20090257257A1

公开(公告)日：2009-10-15

申请号：US12100958

申请日：2008-04-10

申请人： Claudio Adragna ,  Aldo Novelli ,  Antonio Borrello ,  Laszlo Huber ,  Brian T. Irving ,  Milan M. Jovanovic

发明人： Claudio Adragna ,  Aldo Novelli ,  Antonio Borrello ,  Laszlo Huber ,  Brian T. Irving ,  Milan M. Jovanovic

IPC分类号： H02J1/10

CPC分类号： H02M3/1584 ,  H02M2003/1586

摘要： Control device for a switching converter structure comprising at least a first and a second interleaved converter, wherein the control device is configured to designate one converter as master and at least the other converter as slave, to set a time delay of the operating cycle of the slave converter and to synchronize the master and the at the least one slave converter.

摘要翻译： 一种用于开关转换器结构的控制装置，包括至少第一和第二交错转换器，其中所述控制装置被配置为将一个转换器指定为主机，并且将至少另一转换器指定为从机，以设置所述操作周期的时间延迟 从器件转换器，并使主器件与至少一个从器件转换器同步。

公开(公告)号：US06353547B1

公开(公告)日：2002-03-05

申请号：US09819699

申请日：2001-03-29

申请人： Yungtaek Jang ,  Milan M. Jovanovic

发明人： Yungtaek Jang ,  Milan M. Jovanovic

IPC分类号： H02M75387

CPC分类号： H02M7/487 ,  H02M3/33569 ,  H02M2001/0058

摘要： Three-level, constant-frequency, soft-switched isolated converters provide zero-voltage-switching (ZVS) conditions for the turn-on of all primary switches over a wide range of input voltage and output load. These converters achieve ZVS with the minimum duty cycle loss and circulating current, which optimizes the conversion efficiency. The ZVS of the primary switches is achieved by the energy stored in an inductor on the primary side of the isolation transformer. The inductor and transformer are arranged so that a change in the phase shift between the outer and inner pair of switches of the series connection of four switches changes the volt-second product on the windings of the transformer and the windings of the inductor in opposite directions. In some embodiments the primary-side inductor is coupled inductor with two windings, whereas in the other embodiments the inductor has only one winding.

摘要翻译： 三电平，恒频，软开关隔离转换器为广泛的输入电压和输出负载的所有主开关导通提供零电压开关（ZVS）条件。 这些转换器以最小的占空比损耗和循环电流实现ZVS，从而优化了转换效率。 初级开关的ZVS通过存储在隔离变压器初级侧的电感器中的能量来实现。 电感器和变压器被布置成使得四个开关的串联的外部和内部对开关之间的相移的变化改变了变压器的绕组上的伏秒乘积和电感器的绕组在相反方向 。 在一些实施例中，初级侧电感器是具有两个绕组的耦合电感器，而在其它实施例中，电感器仅具有一个绕组。

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。