| 摘要 |
PROBLEM TO BE SOLVED: To widen a range of input voltage for enabling output voltage to be controlled, and to heighten a switching frequency, when controlling the output voltage.SOLUTION: In a DC-DC converter, by masking a part of an on period of a comparison result signal comp_out in which the on period varies according to output voltage Vout, with a timing control signal tm_cntl of which transition timing varies according to input voltage Vin, an on period of a control signal cntl for controlling the output voltage Vout is made shorter than the on period of the comparison result signal comp_out. |
