Patent ID: 7733070

Claim:
A multi-output type DC/DC converter comprising: a reactor connected to a direct-current power supply; a first switching circuit including one or more switches to apply a current to the reactor; a second switching circuit including one or more switches to switch an output from the reactor to any one of a plurality of output terminals; a plurality of output voltage detection units to detect voltages of the plurality of output terminals; a plurality of comparison circuits to compare outputs of the plurality of output voltage detection units with a waveform signal of a predetermined frequency; and an output selection unit to receive outputs of the plurality of comparison circuits as inputs, the output selection unit selecting an output of a comparison circuit, the output having an earliest rise or an earliest fall, to generate a plurality of control signals pertaining to on and off of at least one of the first switching circuit and the second switching circuit, the output selection unit treating the plurality of control signals in accordance with a predetermined priority order when the outputs of the plurality of comparison circuits change almost at the same time, wherein a current generated by a discharge of energy accumulated in the reactor is output to any one of the plurality of output terminals in accordance with the control signals generated by the output selection unit.