| 摘要 |
PROBLEM TO BE SOLVED: To provide a DC-DC converter capable of performing both step-down operation and step-up operation for implementing efficient voltage conversion.SOLUTION: A DC-DC converter includes: an inductor element; a first switch element connected between the inductor element and a power supply terminal; a second switch element connected between the inductor element and the ground; a current path for establishing connection between first and second terminals of the inductor element in parallel to the inductor element; a resistor element and a third switch element that are provided on the current path; and a first control circuit that makes the first switch element and the second switch element be in a conductive state and in a non-conductive state respectively at the time of step-down operation and makes the first switch element and the second switch element be in a non-conductive state and in a conductive state respectively at the time of step-up operation, in a predetermined period immediately after a state of performing temporary electric connection between the first and second terminals through the resistor element finishes. |
