DC-DC CONVERTER FOR SETTING TOPOLOGY CAPABLE OF PROVIDING POWER OF HIGH EFFICIENCY REGARDLESS OF THE CHANGE OF INPUT AND OUTPUT VOLTAGES

摘要

PURPOSE: A DC-DC converter for setting topology is provided to prevent the backflow of a current by controlling a switch unit through a signal of a backflow detecting unit.;CONSTITUTION: A topology selecting unit(140) selects topology according to an external input signal and generates a signal corresponding to the selected topology. A pulse width modulating unit(150) generates a signal to determine the operation time of the switch unit. A backflow detecting unit(170) generates a signal by detecting the backflow of a current flowing in the switch unit. A switch control unit(160) controls the switch unit according to the signals of the backflow detecting unit, the pulse width modulating unit, and the topology selecting unit.;COPYRIGHT KIPO 2013;[Reference numerals] (122) First short circuit unit; (124) Second short circuit unit; (126) Third short circuit unit; (128) Fourth short circuit unit; (140) Topology selecting unit; (150) Pulse width modulating unit; (160) Switch control unit; (172) First backflow detecting unit; (174) Second backflow detecting unit; (AA) Input; (BB) Output; (CC) Topology input