Patent ID: 7268410
Filing Date: 2007-09-11
Classification: H02M

Abstract:
1. An integrated switching voltage regulator circuit comprising: a diode anode layer of P-type semiconductor material; a diode cathode layer of N-type semiconductor material formed on an upper surface of the diode anode layer such that the diode anode layer and the diode cathode layer combine to form a diode structure of the switching voltage regulator circuit; a switching transistor formed over and extending into the diode cathode layer; an inductor formed over the diode cathode layer and spaced apart therefrom by intervening dielectric material, the inductor also being spaced apart from the switching transistor; a conductive interconnect structure disposed to electrically interconnect the diode structure, the switching transistor and the inductor, the conductive interconnect structure including a conductive voltage supply contact formed to extend from a lower surface of the diode anode layer through the diode anode layer and a portion of the diode cathode layer and into electrical contact with the switching transistor; and wherein the switching voltage regulator circuit is adapted for connection to a capacitor.