Patent ID: 8102029

Claim:
A buck converter module comprising: a) a high side (HS) die having source, drain, and gate bonding pads on a front side of said HS die; b) a low side (LS) die having a first section thereof with a plurality of through silicon vias (TSVs) extending from a back side to a front side of said LS die, said LS die having source, drain, and gate bonding pads located on a front side of a second section separate from said first section, said drain bonding pad electrically connected to said back side of said LS die in said second section; and c) said HS die and said LS die bonded together such that said source bonding pad of said HS die is electrically connected to said back side of said LS die, and each of said drain and gate bonding pads are electrically connected to separate TSVs in said LS die.