Patent ID: 9673268
Date: 2017-06-06
CPC Classifications: H01F,H01L

Claim:
1. A device, comprising: a semiconductor die having a body, a front side, a back side, and a first through-body-via-based inductor disposed in the die and having a first turn which includes first and second conductive through-body-vias passing through the body of the die from the front side of the die to the back side of the die, said first and second through-body-vias each having a front side end at the front side of the die and said first and second through-body-vias each having a back side end at the back side of the die; said first turn further including first and second stack conductors disposed on the front side of the die and coupled to the first and second through-body-vias, respectively, each stack conductor comprising: a transformer having a core in the die body, said transformer including said first through-body-via based inductor and including a second through-body-via-based inductor in the die having first and second turns, wherein the first and second turns of the first and second through-body-via-based inductors are interwound so that the first and second through-body-via-based inductors are inductively coupled together and share the core in the die body.