Patent ID: 8198710

Claim:
A synchronous voltage converter at least partially encapsulated in encapsulating material, comprising: a first, folded metal leadframe having first and second metal plates connected by a first metal belt member, a surface of each of said metal plates having the largest area being parallel with each other and one of said plates connected to a lead that extends outside the encapsulating material; a second, planar metal leadframe positioned between said metal plates and contacting said plates for electrically connecting the said metal plates to each other, said second metal leadframe having a plurality of leads extending outside the encapsulating material; and a high side mosfet die and a low side mosfet die, each with a source terminal and gate terminal on one side of each die and a drain terminal on the other side of each die; wherein the drain of the high side mosfet die is attached to one plate of the first and second plates, the drain of the low side mosfet die is attached to the other plate of the first and second plates, the gates of the two dies are connected to one lead of the plurality of external leads of the second leadframe and the sources of the two dies are connected to another external lead of the plurality of leads of the second leadframe.