Systems including voltage regulator circuits are disclosed. In one embodiment, an apparatus includes a voltage regulator controller integrated circuit (IC) die including one or more portions of a voltage regulator circuit. The apparatus further includes a capacitor die, an inductor die, and an interconnect layer arranged over the voltage regulator controller IC die, the capacitor die and the inductor die. The interconnect provides electrical connections between the voltage regulator controller IC die, the capacitor die and the inductor die to form the voltage regulator circuit. In a further embodiment, the voltage regulator controller IC die, the capacitor die and the inductor die are arranged in a planar fashion within a voltage regulator module. In still another embodiment, a system IC is coupled to the voltage regulator module and includes one or more functional circuit blocks coupled to receive a regulated supply voltage generated by the voltage regulator circuit.