Package embedded magnetic power transformers for smps

An electronic package, comprising:

• a package core layer;
• a magnetic core embedded in the package core layer, wherein the magnetic core comprises an inner diameter and an outer diameter;
• a plurality of routing layers above and below the package core layer;
• a primary winding around the magnetic core, wherein the primary winding has a first number of first turns;
• a secondary winding around the magnetic core, wherein the secondary winding has a second number of second turns, and wherein individual ones of the second turns comprise a plurality of secondary segments connected in parallel;
• and
• wherein horizontal portions of the primary winding and the secondary winding are provided in the plurality of routing layers, and wherein vertical portions of the primary winding and the secondary winding comprise plated through holes through the package core layer.

An electronic system, comprising:

• a die;
• an electronic package coupled to the die, wherein the electronic package comprises a power transformer, wherein the power transformer comprises:
• a magnetic core with an inner diameter and an outer diameter;
• a primary winding around the magnetic core, wherein the primary winding has a first number of first turns connected in series around the magnetic core;
• and
• a secondary winding around the magnetic core, wherein the secondary winding has a second number of second turns around the magnetic core, wherein individual ones of the second turns comprise a plurality of secondary segments connected in parallel.