The voltage lift technique has been successfully employed in the design of DC/DC converters, e.g. three-series Luo-converters, in which the output voltage increases stage-by-stage in arithmetic progression. The super-lift technique considerably increases the voltage transfer stage-by-stage gain in geometric progression. However, their circuits are complex. An approach, positive output cascade boost converters, that implements the output voltage increasing in geometric progression with a simple structure is introduced. These converters also effectively enhance the voltage transfer gain in power-law terms.