DC/DC boost converter design and development based on asynchronously paralleled switches

DC/DC voltage converters whose wide applications have been reported recently are of the simplest converters which have very good performance. Keeping in mind that of different measures related to these converters, one is to increase their switching power, switch element of limited power and lack of input inductor of enough size have bounded their wide applications. In order to increase the power of these converters so that fit the demanded power, use can be made of several methods such as directly paralleled switches, paralleled switches along with switch´s parameters unification using extra-impedance in circuit, using special snubbers, paralleled converters, etc. Even though these methods increase the power, but converters still experience limitations like low efficiency. Author has proposed a novel method called asynchronously paralleled switches, as can be seen from simulation results, which are to much extent able to overcome the current obstacles. For the purpose of more justification, in this paper, besides computer simulation using PSPICE, a prototype based on the proposed method has been developed. Both simulation and experimental results acknowledge the pros of the proposed method over the conventional ones.