Symmetrical DC/DC converter with synchronous rectifiers having an operational amplifier in the driver circuit

摘要

A symmetrical DC/DC converter is adapted to desirably select an energy transferring direction and a step-up or a step-down operation as well as a desired step-up or a step-down ratio. The converter comprising a single inductor with a pair of switching means connected to its terminals in a symmetrical arrangement with respect to the inductor. The converter is operable as a step-up converter and a step-down converter in a manner such that one and the other of the switching means are used as an input switch and an output switch, respectively, and that one and the other of the switching means are conversely used as an output switch and an input switch, respectively.