POWER SUPPLY UNIT AND ITS CONTROLLING METHOD, AND POWER SUPPLY SYSTEM AND ITS CONTROLLING METHOD

摘要

PROBLEM TO BE SOLVED: To control the rising speed of an output voltage to a load. SOLUTION: When output to the load of voltage that is generated by the switching operation of a first switching element is to be turned on and off by a second switching element, the turn-off speed of the second switching element is increased at the rising of a generation voltage by the first switching element to increase the rising speed of the generation voltage by the first switching element.