Invention Grant
US07868431B2 Compact power semiconductor package and method with stacked inductor and integrated circuit die
有权
紧凑型功率半导体封装和堆叠电感和集成电路管芯的方法
- Patent Title: Compact power semiconductor package and method with stacked inductor and integrated circuit die
- Patent Title (中): 紧凑型功率半导体封装和堆叠电感和集成电路管芯的方法
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Application No.: US12391251Application Date: 2009-02-23
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Publication No.: US07868431B2Publication Date: 2011-01-11
- Inventor: Tao Feng , Xiaotian Zhang , François Hébert , Ming Sun
- Applicant: Tao Feng , Xiaotian Zhang , François Hébert , Ming Sun
- Applicant Address: US CA Sunnyvale
- Assignee: Alpha and Omega Semiconductor Incorporated
- Current Assignee: Alpha and Omega Semiconductor Incorporated
- Current Assignee Address: US CA Sunnyvale
- Agency: Chemily LLC
- Agent Chein-Hwa Tsao
- Main IPC: H01L23/495
- IPC: H01L23/495 ; H01L21/44 ; H01L21/48 ; H01L21/50 ; H01F5/00

Abstract:
A power semiconductor package is disclosed with high inductance rating while exhibiting a reduced foot print. It has a bonded stack of power IC die at bottom, a power inductor at top and a circuit substrate, made of leadframe or printed circuit board, in the middle. The power inductor has a inductor core of closed magnetic loop. The circuit substrate has a first number of bottom half-coil forming conductive elements beneath the inductor core. A second number of top half-coil forming conductive elements, made of bond wires, three dimensionally formed interconnection plates or upper leadframe leads, are located atop the inductor core with both ends of each element connected to respective bottom half-coil forming conductive elements to jointly form an inductive coil enclosing the inductor core. A top encapsulant protectively encases the inductor core, the top half-coil forming conductive elements, the bottom half-coil forming conductive elements and the circuit substrate.
Public/Granted literature
- US20090160595A1 Compact Power Semiconductor Package and Method with Stacked Inductor and Integrated Circuit Die Public/Granted day:2009-06-25
Information query
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