Systems and methods are disclosed for reducing an interwinding capacitance current in a transformer. In certain embodiments, the transformer includes a coupling winding and a primary winding that encircles a portion of the coupling winding. Additionally, the transformer includes a secondary winding that encircles a portion of the coupling winding. The transformer includes a shield terminal which is electrically coupled to the coupling winding. The shield terminal directs currents, such as interwinding capacitance currents, in the coupling winding to ground.