Abstract
Multiport converters play a significant role in portable electronic and electric vehicle (EV) applications. In literature, different configurations of single-input multi-output (SIMO) converters are presented. Most of the SIMO converters generate the outputs with operating constraints on the duty ratio and charging of inductors. The cross-regulation problem is still a challenge in SIMO converters design. A SIMO topology is proposed in this study to overcome the limitations mentioned earlier. It can generate three different output voltages without constraint on the duty cycle and inductor currents (like <inline-formula> <tex-math notation="LaTeX">i_{L1} > i_{L2} > i_{L3} </tex-math></inline-formula> or <inline-formula> <tex-math notation="LaTeX">i_{L1} < i_{L2} < i_{L3} </tex-math></inline-formula>). Cross regulation problems do not exist in the proposed topology, so the load voltage <inline-formula> <tex-math notation="LaTeX">V_{01} </tex-math></inline-formula> (<inline-formula> <tex-math notation="LaTeX">V_{02} </tex-math></inline-formula>) (<inline-formula> <tex-math notation="LaTeX">V_{03} </tex-math></inline-formula>) is not affected by the variation of output current <inline-formula> <tex-math notation="LaTeX">i_{03} </tex-math></inline-formula> (<inline-formula> <tex-math notation="LaTeX">i_{02} </tex-math></inline-formula>) (<inline-formula> <tex-math notation="LaTeX">i_{01} </tex-math></inline-formula>). The loads are isolated from each other during control. In the laboratory, a 200 W prototype circuit is developed; simulation and experimental results are validated.