Power MOSFET diode reverse recovery characterisation

Exhibitor: Frederic Chuan

Supervisor: Geoffrey Walker

Research Group: Embedded Systems

Industry Sector: Energy and Utilities

In today’s world where electric vehicles are just starting to be noticed, inefficiencies and losses in will greatly affect the lifetime of the batteries. This thesis investigates the effects of operating MOSFETs at a range of voltages and currents on the reverse recovery rate. This will assist in choosing the best-suited device for driving electric motors.

By testing a family of power MOSFETs, it can be determined whether a relationship exists between the reverse recovery durations and peak reverse recovery charge. These results will also be compared to SPICE models to acertain if SPICE models are accurate for simulations.

Thesis Document (PDF)