公开(公告)号：US20140185346A1

公开(公告)日：2014-07-03

申请号：US13729943

申请日：2012-12-28

Applicant: EATON CORPORATION

Inventor： Yu Liu ,  Andraw Ho ,  Nash Lee ,  Slobodan Krstic

IPC: H03K17/56 ,  H01L29/739 ,  H02M7/537 ,  H01L29/16

CPC classification number: H02M3/155 ,  H01L29/1602 ,  H01L29/1608 ,  H01L29/7393 ,  H02M7/487 ,  H02M7/537 ,  H03K17/127 ,  H03K17/56 ,  H03K17/567 ,  H03K2217/0036

Abstract: A hybrid switching circuit includes first and second switching devices containing first and second unequal bandgap semiconductor materials. These switching devices, which support parallel conduction in response to first and second control signals, are three or more terminal switching devices of different type. For example, the first switching device may be a three or more terminal wide bandgap switching device selected from a group consisting of JFETs, IGFETs and high electron mobility transistors HEMTs, and the second switching device may be a Si-IGBT. A control circuit is also provided, which is configured to drive the first and second switching devices with first and second periodic control signals having first and second unequal duty cycles. The first duty cycle may be greater than the second duty cycle and the active phases of the second periodic control signal may occur exclusively within the active phases of the first periodic control signal.

Abstract translation: 混合开关电路包括包含第一和第二不等带隙半导体材料的第一和第二开关器件。 响应于第一和第二控制信号支持并行传导的这些开关装置是三种或更多种不同类型的端子开关装置。 例如，第一开关器件可以是从由JFET，IGFET和高电子迁移率晶体管HEMT组成的组中选择的三个或更多个终端宽带隙开关器件，并且第二开关器件可以是Si-IGBT。 还提供了一种控制电路，其被配置为利用具有第一和第二不等工作周期的第一和第二周期性控制信号驱动第一和第二开关装置。 第一占空比可以大于第二占空比，并且第二周期控制信号的有效相位可以专门发生在第一周期性控制信号的有效相位内。