Patent ID: 7372239

Claim:
A multi-output type DC/DC converter comprising: a reactor connected to a direct-current power supply; a first switching circuit composed of one or two switches or more to apply a current to the reactor; a second switching circuit composed of one or two switches or more to switch an output from the reactor to any one of a plurality of output terminals; a plurality of output voltage detection sections to detect voltages of the plurality of output terminals; a plurality of comparison circuits to compare outputs of the plurality of output voltage detection sections with a waveform signal of a predetermined frequency; and an output selection circuit to receive outputs of the plurality of comparison circuits as inputs, and to select an output of a comparison circuit, the output having the earliest rise or the earliest fall, so as to generate a control signal pertaining to on and off of the first switching circuit and/or the second switching circuit, 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 signal generated by the output selection circuit.