发明申请
US20160005627A1 ULTRA-THIN POWER TRANSISTOR AND SYNCHRONOUS BUCK CONVERTER HAVING CUSTOMIZED FOOTPRINT
审中-公开
超薄功率晶体管和具有自定义功能的同步转矩转换器
- 专利标题： ULTRA-THIN POWER TRANSISTOR AND SYNCHRONOUS BUCK CONVERTER HAVING CUSTOMIZED FOOTPRINT
- 专利标题（中）： 超薄功率晶体管和具有自定义功能的同步转矩转换器
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申请号： US14854140申请日： 2015-09-15
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公开(公告)号： US20160005627A1公开(公告)日： 2016-01-07
- 发明人: Juan A HERBSOMMER , Osvaldo J LOPEZ , Jonathan A NOQUIL
- 申请人： Texas Instruments Incorporated
- 主分类号： H01L21/48
- IPC分类号： H01L21/48 ; H01L23/00 ; H01L21/56
摘要：
A power field-effect transistor package is fabricated. A leadframe including a flat plate and a coplanar flat strip spaced from the plate is provided. The plate has a first thickness and the strip has a second thickness smaller than the first thickness. A field-effect power transistor chip having a third thickness is provided. A first and second contact pad on one chip side and a third contact pad on the opposite chip side are created. The first pad is attached to the plate and the second pad to the strip. Terminals are concurrently attached to the plate and the strip so that the terminals are coplanar with the third contact pad. The thickness difference between plate and strip and spaces between chip and terminals is filled with an encapsulation compound having a surface coplanar with the plate and the opposite surface coplanar with the third pad and terminals. The chip, leadframe and terminals are integrated into a package having a thickness equal to the sum of the first and third thicknesses.