| Abstract |
Often data sheets provide only poor information about the recovery behavior of ultra-fast diodes. Onthe other hand, existing diode models do not predict the real characteristic of all diodes. Nevertheless,due to its importance, this behavior needs to be known and therefore measured. For this purpose, afully automated measurement set-up for determining the reverse recovery characteristic of ultra-fastdiodes in an accurate manner was designed and is described here. All the data obtained is immediatelytransferred into MATLAB and therefore available for further calculation, model building and modelvalidation. Since the whole set-up is automated, a complete field of variations in the reverse voltage,the forward current, the temperature, and the rate of current drop di/dt can be easily applied to thetested diode. Hence, a lot of information can be obtained effortlessly. This uncomplicatedmethodology makes it readily available for circuit designers, allowing them to predict the contributionof the reverse recovery of rectifiers to the total losses more accurately. In addition, a real comparisonof different diodes at many operation points is possible. |
