Experimental demonstration of the MOS controlled diode (MCD)

The MOS controlled diode (MCD) is a new class of power semiconductor diode that can achieve ideal diode performance. In this paper, experimental verification of the MCD concept is presented for the first time by using commercially available power MOSFETs operating as MCDs. Measurements of the reverse recovery currents and reverse recovery charges of these MCDs are obtained and compared with the body diodes of the MOSFETs. These measurements show that these MCDs can significantly reduce the reverse recovery current, storage charge and switching loss. Optimized MCD performances at 1.2 kV, 2.4 kV and 4.5 kV are also projected based on numerical simulations. Ideal performance of the MCD close to that predicted by device simulation should be obtained once an optimized MCD is developed.