CIRCUIT FOR DRIVING CONVERTER, DUAL-MODE LLC RESONANT CONVERTER SYSTEM AND METHOD FOR DRIVING DUAL LLC RESONANT CONVERTER

摘要

PURPOSE: A converter operating circuit, a dual mode LLC resonant converter system, and a dual mode LLC resonant converter operating method are provided to improve the efficiency of a system by controlling a variable range according to the conversion of a frequency. CONSTITUTION: A feedback voltage sensing unit (11) gives feedback on outputted voltage. An operating control voltage generation unit (12) generates operating control voltage with the given voltage. An operating control voltage limit variable setting unit generates maximum voltage and lower limit voltage. A clock generation unit (13) is connected to the operating control voltage generation unit. The clock generation unit generates a switch control signal. [Reference numerals] (100) Operating control voltage limit change setting unit; (11) Feedback voltage sensing unit; (12) Operating control voltage generation unit; (13) Clock generation unit