Azero voltage switched pulse width modulated series parallel resonant converter is presented in this paper. The performance of the converter for constant output voltage with the application of constant switching frequency but variable pulse width is analyzed. The converter operation is applied for motor load applications, where the load varies widely but the output voltage is fixed and is well regulated. Hence the speed of the motor is maintained constant.Experi-mental results are obtained to verify the theoretical results.

Keywords: Zero Voltage Switching, Zero Current switching, DC-DC Converter, Resonant Converter, Soft Switching.