Patent ID: 7599754

Claim:
A method of designing a power converter comprising the steps of: determining specifications of the power converter, including electrical specifications and a circuit configuration; determining circuit parameter values for realizing the electrical specifications and the circuit configuration; determining a semiconductor device which is used for realizing the determined electrical specifications and circuit configuration; determining an equivalent circuit of the determined semiconductor device; extracting parameter values of the determined semiconductor device equivalent circuit as input data for calculating loss of the semiconductor device; dividing the circuit parameter values into circuit parasitic parameter data and circuit basic parameter data, which serve as input data for calculating the loss of the semiconductor device; supplying the semiconductor device equivalent circuit parameter data, the circuit parasitic parameter data, and the circuit basic parameter data to a semiconductor device loss model so as to calculate the loss of the semiconductor device; determining whether or not a circuit loss optimal value has been achieved in consideration of previously prepared parameter data of components of the power conversion circuit, including control parameter data and filter parameter data; again setting the circuit parasitic parameter values and creating the circuit parasitic parameter data when the circuit loss optimal value has not yet been achieved; outputting, as design data, the semiconductor device loss and the circuit parasitic parameter values at that time when the circuit loss optimal value has been achieved; and designing the power converter by use of the optimized semiconductor device loss and circuit parasitic parameter values.