发明授权
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
- 专利标题: Compact power semiconductor package and method with stacked inductor and integrated circuit die
- 专利标题(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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申请号: US12391251申请日: 2009-02-23
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公开(公告)号: US07868431B2公开(公告)日: 2011-01-11
- 发明人: Tao Feng , Xiaotian Zhang , François Hébert , Ming Sun
- 申请人: Tao Feng , Xiaotian Zhang , François Hébert , Ming Sun
- 申请人地址: US CA Sunnyvale
- 专利权人: Alpha and Omega Semiconductor Incorporated
- 当前专利权人: Alpha and Omega Semiconductor Incorporated
- 当前专利权人地址: US CA Sunnyvale
- 代理机构: Chemily LLC
- 代理商 Chein-Hwa Tsao
- 主分类号: H01L23/495
- IPC分类号: H01L23/495 ; H01L21/44 ; H01L21/48 ; H01L21/50 ; H01F5/00
摘要:
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.
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