Patent ID: 8921988

Claim:
A galvanically-isolated device, comprising: a lead frame comprising a first die-attach pad, a first lead and a second lead; a substrate disposed on the first die-attach pad; a high-voltage semiconductor capacitor formed on the substrate, comprising: an interconnection structure, comprising: an inter-metal dielectric layer structure; and a first plate, a second plate and a third plate on the inter-metal dielectric layer structure, separated from each other; wherein the first plate, the second plate and a first portion of the inter-metal dielectric layer structure overlapping with both the first plate and the second plate are composed of a first capacitor, and wherein the first plate, the third plate and a second portion of the inter-metal dielectric layer structure overlapping with both the first plate and the third plate are composed of a second capacitor connected in series with the first capacitor; a first bonding wire electrically connected between the second plate and the first lead; a second bonding wire electrically connected between the third plate and the second lead; and a molding compound layer encapsulating the high-voltage semiconductor capacitor, the first die-attach pad, the first bonding wire and the second bonding wire.