DC-DC VOLTAGE SET-UP METHOD AND POWER SUPPLY CIRCUIT USING THE SAME

摘要: PROBLEM TO BE SOLVED: To provide a DC-DC voltage step-up method which can reduce power consumption by detecting margin of set-up even when display mode or content liquid crystal panel are changed. SOLUTION: The comprises the step (a) for generating setting up an input using clock signal, (b) comparing with at least one predetermined and (c) adjusting frequency signal used in based on comparison result fixing controlling switching element.