Wafer level buck converter
First Claim
1. 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.
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0 Petitions
Accused Products
Abstract
A buck converter module includes a high side (HS) die having source, drain, and gate bonding pads on a front side of the HS die, 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 the LS die, the LS die having source, drain, and gate bonding pads located on a front side of a second section separate from the first section, the drain bonding pad electrically connected to the back side of the LS die in the second section. The HS die and the LS die are bonded together such that the source bonding pad of the HS die is electrically connected to the back side of the LS die, and each of the drain and gate bonding pads are electrically connected to separate TSVs in the LS die.
16 Citations
12 Claims
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1. A buck converter module comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A buck converter module comprising:
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a) a high side (HS) die having source, drain, and gate bonding pads on a front side of said HS die with metal plates attached to each of said bonding pads; 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 first section, wherein sides of the TSVs are in contact with an insulator that extends between said TSVs and to three sides of said LS die on said front side and said back side of said LS die; c) said HS die and said LS die bonded together by an anisotropic conductive film 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; and d) a plurality of solder bumps attached to said bonding pads of said LS die and on said TSVs on said front side of said LS die. - View Dependent Claims (11, 12)
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Specification