Patent ID: 7558088
Filing Date: 2009-07-07
Classification: H02M

Abstract:
1. A power supply device comprising: an output voltage setting portion that generates an output voltage setting signal for providing a set value of an output voltage; and an output voltage control portion that controls to maintain a voltage value of said output voltage at said set value, wherein said output voltage setting portion comprises: a set value changeover portion that has a plurality of set value changeover switches and turns on/off said set value changeover switches to change the set value of said output voltage; a storage device that stores information indicating an ON/OFF state appropriate for each set value changeover switch for keeping the voltage value of said output voltage within a specified range; and a set value changeover switch control portion that controls said set value changeover switches so as to bring each set value changeover switch into a state as indicated by the information stored in said storage device when said output voltage is supplied to the load.