公开(公告)号：US10429416B1

公开(公告)日：2019-10-01

申请号：US15010625

申请日：2016-01-29

申请人： Bel Power Solutions Inc.

发明人： Jun Li ,  Ye Chen ,  Gordon Zongbo Hu ,  Mark A. Jutras

IPC分类号： G01R15/18 ,  H01F27/29 ,  H01F38/20 ,  G01R19/00

摘要： A power switching device is provided with an integrated current sensor. The device includes component housing and multiple terminal legs extending therefrom. A current sensor assembly includes an interior cavity having a galvanically insulating tubular sleeve extending therethrough. A toroidal inductive winding resides within the first cavity and is circumferentially disposed about the sleeve, with one leg of the device defining a (single-turn) primary winding and the winding defining a secondary winding magnetically coupled to the device leg. Current sensing terminals are associated with respective locations along the inductive winding, wherein a current through the encapsulated terminal leg is detectable via respective current sensing leads extending from the assembly housing. A damping inductive element such as a ferrite bead may be provided within a second interior cavity defined by the assembly housing to suppress high frequency oscillations associated with a second (e.g., gate) terminal leg of the switching device.