公开(公告)号：USD507247S1

公开(公告)日：2005-07-12

申请号：US29162517

申请日：2002-06-17

申请人： Qing Chen ,  Randy Thomas Heinrich ,  Del Ray Hilburn ,  Victor Ke-Ji Lee

设计人： Qing Chen ,  Randy Thomas Heinrich ,  Del Ray Hilburn ,  Victor Ke-Ji Lee

公开(公告)号：US5874826A

公开(公告)日：1999-02-23

申请号：US960633

申请日：1997-10-29

申请人： Qing Chen ,  Del Ray Hilburn ,  Ashraf Wagih Lotfi

发明人： Qing Chen ,  Del Ray Hilburn ,  Ashraf Wagih Lotfi

IPC分类号： H02M3/00 ,  H02M3/155 ,  H02M7/06

CPC分类号： H02M3/155 ,  H02M3/00

摘要： A boost converter module, a method of manufacturing the module and a power converter employing one or more of the same. In one embodiment, the boost converter module includes: (1) a power switch, (2) first and second snubber diodes series-coupled between the power switch and a converter output, (3) a snubber capacitor and a boost diode series-coupled across the second snubber diode and (4) an encapsulant substantially surrounding the power switch, the first and second snubber diodes, the snubber capacitor and the boost diode to join the power switch, the first and second snubber diodes, the snubber capacitor and the boost diode into an integrated package, the integrated package having: (4a) a control input coupled to the power switch, (4b) a power input coupled to the power switch, (4c) a snubber inductor input, coupled to a node between the snubber capacitor and the boost diode and (4d) a power output coupled to the converter output.

摘要翻译： 升压转换器模块，制造模块的方法和使用其中的一个或多个的功率转换器。 在一个实施例中，升压转换器模块包括：（1）功率开关，（2）串联耦合在功率开关和转换器输出之间的第一和第二缓冲二极管，（3）缓冲电容器和升压二极管串联耦合 跨越第二缓冲二极管和（4）基本上围绕功率开关的密封剂，第一和第二缓冲二极管，缓冲电容器和升压二极管以连接功率开关，第一和第二缓冲二极管，缓冲电容器和升压 所述集成封装具有：（4a）耦合到所述电源开关的控制输入，（4b）连接到所述电源开关的电源输入，（4c）缓冲电感器输入端，耦合到所述缓冲器之间的节点 电容器和升压二极管，（4d）耦合到转换器输出的功率输出。

公开(公告)号：US06618274B2

公开(公告)日：2003-09-09

申请号：US09973218

申请日：2001-10-09

申请人： Jeffrey John Boylan ,  Qing Chen ,  Jin He ,  Del Ray Hilburn

发明人： Jeffrey John Boylan ,  Qing Chen ,  Jin He ,  Del Ray Hilburn

IPC分类号： H02M3335

CPC分类号： H02M3/33592 ,  Y02B70/1475

摘要： A control scheme for a synchronous rectifier converter that avoids disabling the synchronous rectifiers entirely. Rather than disable the synchronous rectifier altogether to stop the flow of reverse current in light-load, startup, or shutdown conditions, the duty cycle of the synchronous rectifier is modified such that forward current is always allowed to flow through the synchronous rectifier, but the synchronous rectifier is turned off before the reverse current flow reaches a pre-determined level. This is accomplished by operating the converter in a partially synchronous mode of operation during light-load, startup, or shutdown conditions. Whether the circuit is in a light-load, startup, or shutdown condition is determined by a circuit characteristic of the converter that is sensed by the controller, such as average output current. The desired changeover point from fully-synchronous mode to the partially synchronous mode is set to a predetermined level of output current for the converter. The predetermined level is set based on the particular power system in which the invention is implemented. For example, this level can be based on the amount of reverse current that would disrupt the bus to which the converter output is connected, or it could be based on the heat created by the reverse current flow in the power converter when heat dissipation is a concern. The control scheme of the present invention effectively limits reverse current flow while also improving efficiency by eliminating the need for discrete diodes, yet retaining the benefits of synchronous rectification throughout the operating range of the converter.

摘要翻译： 一种同步整流变换器的控制方案，避免了完全禁用同步整流器。 而不是在轻载，启动或关闭条件下完全禁用同步整流器来停止反向电流的流动，同步整流器的占空比被修改为使得正向电流总是允许流过同步整流器，但是 在反向电流达到预定电平之前，同步整流器关闭。 这是通过在轻负载，启动或关闭条件下以部分同步工作模式操作转换器来实现的。 电路是否处于轻负载，启动或关闭状态，由控制器感测的转换器的电路特性（如平均输出电流）决定。 从全同步模式到部分同步模式的期望转换点被设置为转换器的预定输出电流水平。 基于实现本发明的特定电力系统来设定预定电平。 例如，该电平可以基于将中断转换器输出所连接的总线的反向电流的量，或者可以基于在功率转换器中的反向电流流产生的热量，当散热为 关心。 本发明的控制方案有效地限制了反向电流的流动，同时通过消除对分立二极管的需要而提高了效率，同时在转换器的整个工作范围内保持了同步整流的优点。

公开(公告)号：US6134122A

公开(公告)日：2000-10-17

申请号：US232444

申请日：1999-01-15

申请人： Qing Chen ,  Del Ray Hilburn

发明人： Qing Chen ,  Del Ray Hilburn

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  Y10T307/582

摘要： For use with a power converter having a modulator, a controller and a method of operating the same. In one embodiment, the controller includes: (1) signal processing circuitry that develops a unified control signal based on an output voltage, an output current and a current sharing signal of the power converter and (2) compensation circuitry, coupled to the signal processing circuitry, that compares the unified control signal with a reference signal to develop a modulator control signal for the modulator.

摘要翻译： 用于具有调制器的功率转换器，控制器及其操作方法。 在一个实施例中，控制器包括：（1）基于功率转换器的输出电压，输出电流和电流共享信号产生统一控制信号的信号处理电路，和（2）耦合到信号处理的补偿电路 电路，其将统一的控制信号与参考信号进行比较，以产生调制器的调制器控制信号。

公开(公告)号：US6130830A

公开(公告)日：2000-10-10

申请号：US247005

申请日：1999-02-08

申请人： Qing Chen ,  Del Ray Hilburn

发明人： Qing Chen ,  Del Ray Hilburn

IPC分类号： H02J1/10 ,  H02M7/04

CPC分类号： H02J1/102

摘要： An interface circuit for, and method of, allowing first and second power converter systems to function in parallel and a power supply incorporating the controller or the method. In one embodiment, the interface circuit includes: (1) a set point selection circuit, coupled to first and second converter controllers of the first and second power converter systems, respectively, that selects one of the first and second power converter systems to provide a global set point voltage signal and (2) a bus, coupled to the set point selection circuit, that conveys the global set point voltage signal to the first and second power converter systems, the set point selection circuit isolating a nonselected one of the first and second converter controllers from the bus.

摘要翻译： 用于使第一和第二功率转换器系统并行运行的接口电路和方法，以及并入该控制器或该方法的电源。 在一个实施例中，接口电路包括：（1）设置点选择电路，分别耦合到第一和第二功率转换器系统的第一和第二转换器控制器，其选择第一和第二功率转换器系统之一来提供 全局设定点电压信号和（2）总线，耦合到设定点选择电路，其将全局设定点电压信号传送到第一和第二功率转换器系统，设定点选择电路隔离第一和第二功率转换器系统中未选择的一个， 第二个转换器控制器从总线。