Patent ID: 8830693
Filing Date: 2014-09-09
Classification: A61N,H01F

Abstract:
1. A planar transformer assembly for use in charging a plurality of capacitors stacked in series in a shocking circuit of an implantable cardioverter defibrillator, the assembly comprising: a multilayer printed circuit board (PCB); a primary winding formed on a first layer and a second layer of the PCB; and a plurality of secondary windings, each secondary winding of the plurality of secondary windings being formed on a corresponding pair of layers of the PCB, and each secondary winding being coupled to a corresponding capacitor of the plurality of capacitors; wherein each layer of each pair of layers is separate from one another and from the first and second layers on which the primary winding is formed; and the plurality of secondary windings are arranged in a nested fashion, such that a first pair of layers, on which a first secondary winding of the plurality is formed, is located in between individual layers of a second pair of layers on which a second secondary winding of the plurality is formed.