Integration of a schottky diode with a mosfet

Abstract

There is disclosed the integration of a Schottky diode with a MOSFET, more in detail there is a free-wheeling Schottky diode and a power MOSFET on top of a buried grid material structure. Advantages of the specific design allow the whole surface area to be used for MOSFET and Schottky diode structures, the shared drift layer is not limited by Schottky diode or MOSFET design rules and therefore, one can decrease the thickness and increase the doping concentration of the drift layer closer to a punch through design compared to the state of the art. This results in higher conductivity and lower on-resistance of the device with no influence on the voltage blocking performance. The integrated device can operate at higher frequency. The risk for bipolar degradation is avoided.

Dependencies are inferred from the claim text.