| 摘要 |
PROBLEM TO BE SOLVED: To keep an output voltage constant over an entire area of an output current by properly correcting an output current/output voltage property in the case of such an output current/output voltage property as to be reduced toward the right side only in a low load area representatively like a chopper circuit.SOLUTION: A feedback control section 20 controls a chopper circuit 40 interposed in a power supply line 1 by a detection voltage at an output terminal side. An output voltage correction section 30 is formed by combining a first property correction part 31 which gives a first output current/output voltage property A1 that an output voltage monotonously increases with increase of an output current, and a second property correction part 32 which gives a second output current/output voltage property A2 suppressing the output voltage to be a constant value in an area equal to or higher than a reference value of the output current, relatively to the first output current/output voltage property A1. |
