公开(公告)号：US20140369093A1

公开(公告)日：2014-12-18

申请号：US14306807

申请日：2014-06-17

申请人： ABB Research Ltd

发明人： Ki-Bum PARK ,  Francisco CANALES ,  Sami PETTERSSON

IPC分类号： H02M1/34

CPC分类号： H02M1/34 ,  H02M3/335 ,  H02M2001/344 ,  H02M2001/348

摘要： Exemplary embodiments provide a method and an adaptive RCD snubber circuit for a switching converter having a series-connection of a main inductor and a main switching device. A voltage stress of the main switching device is sensed, and the sensed voltage stress is controlled to a reference level by controlling a snubber capacitor voltage, wherein the snubber capacitor voltage is controlled by adjusting the snubber resistance of the RCD snubber.

摘要翻译： 示例性实施例提供了一种用于具有主电感器和主开关装置的串联连接的开关转换器的方法和自适应RCD缓冲电路。 感测主开关装置的电压应力，并且通过控制缓冲电容器电压将感测到的电压应力控制到参考电平，其中通过调节RCD缓冲器的缓冲电阻来控制缓冲电容器电压。

公开(公告)号：US20140167720A1

公开(公告)日：2014-06-19

申请号：US13945877

申请日：2013-07-18

申请人： HON HAI PRECISION INDUSTRY CO., LTD.

发明人： CHENG-LUNG CHIANG

IPC分类号： H02M3/156

CPC分类号： H02M3/158 ,  H02M2001/0032 ,  H02M2001/344 ,  Y02B70/16

摘要： An energy-efficient power control device, which employs a snubber circuit only during the risk of voltage spikes during fast switching, includes a buck converter, a power supply unit (PSU), a peak detecting circuit, a snubber circuit, and a logic circuit. The power control device supplies power to an input terminal of an electronic device. The snubber circuit is connected to the buck converter. The logic circuit is connected between the peak detecting circuit and the snubber circuit and determines whether the buck converter is under the heavy load or a light load according to the voltage, and connects the snubber circuit when the buck converter is under the heavy load, and disconnects the snubber circuit when the buck converter is under the light load.

摘要翻译： 仅在快速切换期间在电压尖峰的风险下采用缓冲电路的节能功率控制装置包括降压转换器，电源单元（PSU），峰值检测电路，缓冲电路和逻辑电路 。 电力控制装置向电子装置的输入端子供电。 缓冲电路连接到降压转换器。 逻辑电路连接在峰值检测电路和缓冲电路之间，并根据电压判断降压转换器是否处于重负载或轻负载状态，并且当降压转换器处于重负载时连接缓冲电路，以及 当降压转换器处于轻负载状态时，断开缓冲电路。

公开(公告)号：US08687330B2

公开(公告)日：2014-04-01

申请号：US13515183

申请日：2011-09-05

申请人： Minoru Nishio ,  Takatoshi Oe

发明人： Minoru Nishio ,  Takatoshi Oe

IPC分类号： H02H9/00

CPC分类号： H03K17/164 ,  H02M1/34 ,  H02M2001/342 ,  H02M2001/344 ,  Y02B70/1491

摘要： The invention provides a low cost semiconductor device with which it is possible to easily select IGBT soft shutdown characteristics appropriate to a system.The drive IC (100) is configured of an output stage circuit (1), a shutdown circuit (2), a logic circuit (3), and an alarm signal processing circuit (4), the shutdown circuit (2) is configured of a resistor circuit (5) and an n-MOSFET (8), and the resistor circuit (5) is formed by an n-MOSFET (9), a resistor (10), and a switching conductor (11). By switching the switching conductor (11) of the resistor circuit (5) among A, B, and C conditions, it is possible to easily select shutdown characteristics of an IGBT (61) appropriate to a system.

摘要翻译： 本发明提供了一种低成本半导体器件，可以容易地选择适合于系统的IGBT软关断特性。 驱动IC（100）由输出级电路（1），关断电路（2），逻辑电路（3）和报警信号处理电路（4）构成，关断电路（2）由 电阻电路（5）和n-MOSFET（8），并且电阻电路（5）由n-MOSFET（9），电阻器（10）和开关导体（11）形成。 通过在A，B，C条件下切换电阻电路（5）的开关导体（11），能够容易地选择适合于系统的IGBT（61）的关断特性。

公开(公告)号：US08664998B2

公开(公告)日：2014-03-04

申请号：US13336141

申请日：2011-12-23

申请人： Ta-Yung Yang ,  Li Lin ,  Jung-Sheng Chen ,  Chih-Hsien Hsieh ,  Yue-Hong Tang

发明人： Ta-Yung Yang ,  Li Lin ,  Jung-Sheng Chen ,  Chih-Hsien Hsieh ,  Yue-Hong Tang

IPC分类号： H03K5/00

CPC分类号： H02M1/34 ,  H02M2001/344

摘要： An adaptive filter circuit for sampling a reflected voltage of a transformer of a power converter includes a first switch for receiving the reflected voltage, a resistor having a first terminal and a second terminal, the first terminal of the resistor being coupled to the first switch, a capacitor coupled to the second terminal of the resistor for holding the reflected voltage, and a second switch coupled to the resistor in parallel, wherein the resistor and the capacitor develop a filter for sampling the reflected voltage which is sampled without filtering by the filter in a first period during a disable period of a switching signal and also sampled with filtering by the filter in a second period during the disable period of the switching signal.

摘要翻译： 用于对功率转换器的变压器的反射电压进行采样的自适应滤波器电路包括用于接收反射电压的第一开关，具有第一端子和第二端子的电阻器，电阻器的第一端子耦合到第一开关， 耦合到所述电阻器的所述第二端子以保持所述反射电压的电容器，以及并联耦合到所述电阻器的第二开关，其中所述电阻器和所述电容器形成滤波器，用于对所述滤波器进行采样而不被所述滤波器滤波 在开关信号的禁止期间内的第一期间，并且在开关信号的禁止期间内，在第二期间通过滤波器进行滤波而进行采样。

公开(公告)号：US08570780B2

公开(公告)日：2013-10-29

申请号：US13396934

申请日：2012-02-15

申请人： Shinsuke Godo ,  Atsunobu Kawamoto

发明人： Shinsuke Godo ,  Atsunobu Kawamoto

IPC分类号： H02H7/122 ,  H02H9/04

CPC分类号： H01L29/7395 ,  H01L23/49575 ,  H01L24/45 ,  H01L24/48 ,  H01L24/49 ,  H01L27/0688 ,  H01L29/0619 ,  H01L2224/05553 ,  H01L2224/0603 ,  H01L2224/32145 ,  H01L2224/45124 ,  H01L2224/48091 ,  H01L2224/48137 ,  H01L2224/48139 ,  H01L2224/48247 ,  H01L2224/4846 ,  H01L2224/49111 ,  H01L2924/00014 ,  H01L2924/12035 ,  H01L2924/1305 ,  H01L2924/13055 ,  H01L2924/1306 ,  H01L2924/13091 ,  H01L2924/181 ,  H01L2924/30107 ,  H01L2924/3011 ,  H02M2001/344 ,  H01L2924/00 ,  H01L2224/85399 ,  H01L2224/05599

摘要： A semiconductor device includes: a parallel connection structure 1 between a first node and a second node; a first snubber device and a second snubber device having a clamp level that is the same as or higher than the output voltage of a power source section. One terminal of the first snubber device is connected through the first node to one end of the parallel connection structure, the opposite terminal of the first snubber device is connected through a third node to one terminal of the second snubber device, and the opposite terminal of the second snubber device is connected through the second node to the opposite end of the parallel connection structure. Electric power is fed back to the power source section through the second and third nodes.

摘要翻译： 半导体器件包括：在第一节点和第二节点之间的并行连接结构1; 第一缓冲装置和第二缓冲装置，其具有与电源部分的输出电压相同或更高的钳位电平。 第一缓冲装置的一个端子通过第一节点连接到并联连接结构的一端，第一缓冲装置的相对端通过第三节点连接到第二缓冲装置的一个端子， 第二缓冲装置通过第二节点连接到并联连接结构的相对端。 电力通过第二和第三节点反馈到电源部分。

公开(公告)号：US08278896B2

公开(公告)日：2012-10-02

申请号：US12933791

申请日：2009-05-01

申请人： Kazuhiro Horii

发明人： Kazuhiro Horii

IPC分类号： G05F1/00

CPC分类号： H02M3/1588 ,  H02M1/34 ,  H02M3/158 ,  H02M2001/344 ,  Y02B70/1466

摘要： A switching power supply device has a synchronized rectifying element that turns on and off complementarily with a main oscillation element that is connected in series with an input power supply, and a parasitic diode that is connected to the two ends of the synchronized rectifying element in a direction enabling current supply toward a smoothing circuit. The device has a control circuit that generates a control pulse according to which a time delay is set for turning on the main oscillation element after a certain period of time elapses after the synchronized rectifying element is turned off, and that drives the main oscillation element and the synchronized rectifying element. An auxiliary rectification circuit has a series circuit formed by an auxiliary switch element and an auxiliary capacitor driven by the control circuit (PW2) and which is provided between the two ends of the parasitic diode.

摘要翻译： 开关电源装置具有与与输入电源串联连接的主振荡元件互补地导通和截止的同步整流元件，以及与同步整流元件的两端连接的寄生二极管 方向使电流向平滑电路供电。 该装置具有控制电路，其产生控制脉冲，根据该控制脉冲设定用于在同步整流元件关断之后经过一定时间段后接通主振荡元件的时间延迟，驱动主振荡元件， 同步整流元件。 辅助整流电路具有由辅助开关元件和由控制电路（PW2）驱动的辅助电容器形成的串联电路，并且设置在寄生二极管的两端之间。

公开(公告)号：US20110303534A1

公开(公告)日：2011-12-15

申请号：US13148154

申请日：2010-02-15

申请人： Yoshio Yanagiya

发明人： Yoshio Yanagiya

IPC分类号： H02M7/42 ,  C23C14/34

CPC分类号： C23C14/3464 ,  C23C14/3485 ,  H01J37/34 ,  H01J37/3444 ,  H01J37/3467 ,  H02M1/34 ,  H02M7/53871 ,  H02M2001/344

摘要： There is provided an AC power supply for a sputtering apparatus in which the AC power supply can prevent the induction of an arc discharge by suppressing an overvoltage to be generated when the polarity of each electrode is reversed. A bridge circuit made up of a plurality of switching transistors SW1-SW4 is disposed between positive and negative DC current output lines from a DC electric power supply source. An inductor DCL which makes a DC output to have a constant-current characteristic is disposed in at least one of the positive and the negative DC output lines from the DC electric power supply source to the bridge circuit, and a snubber circuit is disposed in parallel with inputs of the bridge circuit.

摘要翻译： 提供一种用于溅射装置的交流电源，其中交流电源可以通过抑制当每个电极的极性反转时产生的过电压来防止电弧放电的感应。 由多个开关晶体管SW1-SW4构成的桥接电路配置在直流电源的正，负直流电流输出线之间。 使直流输出具有恒定电流特性的电感器DCL配置在从直流电源到桥接电路的正极和负极直流输出线中的至少一个中，缓冲电路并联设置 与桥接电路的输入。

公开(公告)号：US08000112B2

公开(公告)日：2011-08-16

申请号：US12101700

申请日：2008-04-11

申请人： Xiaoyang Zhang

发明人： Xiaoyang Zhang

IPC分类号： H02M3/335

CPC分类号： H02M3/335 ,  H02M1/34 ,  H02M2001/344

摘要： A transition mode power converter having an active snubber the operation of which is controlled using an auxiliary winding on the transformer of the power converter. In one embodiment, the power converter includes a transformer having a primary winding connected to a voltage source, a primary switch, an auxiliary switch, a capacitor, and an auxiliary winding on the transformer. The primary switch includes a first terminal connected to the primary winding of the transformer and a second terminal connected to a common node. The auxiliary switch includes a first terminal connected to the voltage source and to the primary winding. The capacitor is connected between a second terminal of the auxiliary switch and the first terminal of the primary switch. The auxiliary winding of the transformer is connected to a third terminal of the auxiliary switch and controls operation of the auxiliary switch via the third terminal.

摘要翻译： 一种具有有源缓冲器的过渡模式功率转换器，其工​​作通过功率转换器的变压器上的辅助绕组进行控制。 在一个实施例中，功率转换器包括具有连接到变压器上的电压源，初级开关，辅助开关，电容器和辅助绕组的初级绕组的变压器。 主开关包括连接到变压器的初级绕组的第一端子和连接到公共节点的第二端子。 辅助开关包括连接到电压源和初级绕组的第一端子。 电容器连接在辅助开关的第二端子和主开关的第一端子之间。 变压器的辅助绕组连接到辅助开关的第三端子，并通过第三端子控制辅助开关的操作。

公开(公告)号：US20100295526A1

公开(公告)日：2010-11-25

申请号：US12745848

申请日：2008-11-14

申请人： Fritz Frey

发明人： Fritz Frey

IPC分类号： G05F1/573

CPC分类号： H02M1/32 ,  H02M3/33523 ,  H02M3/3381 ,  H02M2001/344

摘要： According to the invention, a blocking oscillator type converter circuit functions with a transformator that only comprises a primary winding and a secondary winding. Said transformator does not comprise a return coupling winding for the blocking oscillator. The control voltage of the oscillator is derived from the primary voltage of the transformator during the free-wheeling phase. The invention also relates to a voltage monitoring circuit that works independently from the oscillator, the output voltage of the oscillator being repressed when the voltage on the output of the blocking oscillator is too high. A flow monitoring circuit functions independently from the oscillator and the voltage monitoring circuit and suppresses the impulses for the power transistor when the power on the output side exceeds a predetermined measurement.

摘要翻译： 根据本发明，封闭振荡器型转换器电路与仅包括初级绕组和次级绕组的变压器起作用。 所述变压器不包括用于阻塞振荡器的返回耦合绕组。 在续流阶段，振荡器的控制电压来自变压器的初级电压。 本发明还涉及一种独立于振荡器工作的电压监视电路，当阻塞振荡器的输出上的电压太高时，振荡器的输出电压被抑制。 流量监控电路独立于振荡器和电压监视电路起作用，并且当输出侧的电力超过预定测量时抑制功率晶体管的脉冲。

公开(公告)号：US20080285314A1

公开(公告)日：2008-11-20

申请号：US12118589

申请日：2008-05-09

申请人： HASSAN ALI KOJORI

发明人： HASSAN ALI KOJORI

IPC分类号： H02M5/45 ,  H02M5/00

CPC分类号： H02M5/293 ,  H02M1/32 ,  H02M5/271 ,  H02M5/273 ,  H02M2001/344

摘要： A matrix converter may be provided with AC switches that comprise bi-directional sets of semiconductor switches that are gated with a common gating link. A low loss diode-bridge based snubber may facilitate introduction of time delay between sequential operations of the bi-directional set of semiconductor switches. The matrix converter may be operated in a three-phase mode with only one gating signals for each AC switch, in contrast to prior-art matrix converters which may require use multiple gating signals for each AC switch.

摘要翻译： 矩阵转换器可以设置有交流开关，其包括通过公共门控连接门控的双向半导体开关组。 基于低损耗二极管桥的缓冲器可以有助于在双向半导体开关组的顺序操作之间引入时间延迟。 与现有技术的矩阵转换器相比，矩阵转换器可以在三相模式下操作，其中每个AC开关仅具有一个门控信号，这可能需要为每个AC开关使用多个选通信号。