SWITCHING MODE POWER SUPPLY DEVICE WHICH HAS A MULTI-OUTPUT, CAPABLE OF OUTPUTTING A SELECTED VOLTAGE TO EACH OUTPUT END

摘要

PURPOSE: A switching mode power supply device which has a multi-output is provided to remarkably reduce an output voltage fluctuation range according to a load change because a voltage which is fed back can be controlled by being connected with a selection of an output voltage.;CONSTITUTION: A switching mode power source part (100) provides an output voltage (Vout) according to a control. A switch circuit part (200) selects each of multiple output voltages (Vout-1,Vout-2,Vout-n) according to a predetermined pulse control signal (SPC). A feedback circuit part (500) detects the output voltage of the switching mode power source part according to a detection resistance ratio. A control part (600) controls the switching mode power source part according to a feedback voltage (Vfb) which is from the feedback circuit part. A voltage stabilization circuit part (300) stabilizes each of the multiple output voltages.;COPYRIGHT KIPO 2013;[Reference numerals] (100) Switching mode power source part (SMPS); (600) Control part