Patent ID: 8450149
Filing Date: 2013-05-28
Classification: H01L

Abstract:
1. A method of forming a power converter package, the method comprising, arranging a LS FET on a first die attach site of a first leadframe enabling electrical connection between a LS FET gate and a gate pad of the first leadframe and between a LS FET source and a source pad of the first leadframe a first arrangement; arranging a HS FET on a second die attach site of a second leadframe enabling electrical connection between a HS FET gate and a gate pad of the second leadframe and between a HS FET source and a source pad of the second leadframe forming a flipchip arrangement; arranging the flipchip arrangement on the first arrangement such that the HS FET source is electrically connected with a drain of the LS FET through the second leadframe; reflow processing the power converter package so that solder connections between the HS and LS FET's and the associated first and second leadframes are formed by said reflow processing; mounting a controller to the power converter package; establishing electrical connections between the controller and the HS FET and the LS FET by wirebonding; and encapsulating the power converter package.