SWITCHING CONTROL DEVICE OF MULTIPLE-OUTPUT POWER SUPPLY

摘要

PURPOSE: A switching control device of a multi-output power supply apparatus is provided to control a switching mode in the light of the state of load corresponding to a plurality of output voltages. CONSTITUTION: A voltage comparative part(110) compares main output voltage and measured voltage with reference voltage. The main output voltage corresponds to a feedback signal of a multi-output power supply apparatus. The measured voltage is measured by an internal feedback controller of a linear regulator. A load condition discriminating part(120) distinguishes the state of load connected to an output circuit. A control voltage output part(130) determines the size of control voltage. The control voltage controls switching interval of a switching element. The switching element is included in the multi-output power supply apparatus.