Dual-output DC-DC power supply without transformer

This paper proposes an application of the topology converter to dual-output DC-DC power supply, combining buck-boost with zeta converter. By the combination, only single control switch can be used to regulate dual output voltage and only single inductor at the input of the converter can be used provided the same converter ratio. In addition, the output voltage can be stepped up or down by controlling of duty cycle. The performance of the converter is simulated by Orcad program. Experimental results from the prototype in continuous conduction mode using switching frequency 60 kHz. The converter showed the efficiency at stepped down for full load of 85 percent, stepped up for full load of 79 percent.