| 摘要 |
PROBLEM TO BE SOLVED: To sufficiently secure a phase margin while improving responsiveness to a command voltage.SOLUTION: A power source control circuit includes: a first capacitor 21 to which a DC output voltage Vout is applied at one end; a first resistor 22 which is connected at one end, to the other end of the first capacitor 21 and to which a control pulse Sp1 is applied at the other end, the first resistor 22 being configured to generate a voltage Vtr in a triangular wave shape at a connection point A with the first capacitor 21 by discharging the first capacitor 21 when the control pulse Sp1 is at H level and by charging the first capacitor 21 when the control pulse Sp1 is at L level; a second resistor 23 which is connected at one end, to the connection point A; and a switch element 24 which is connected between the other end of the second resistor 23 and a ground G, opens the other end of the second resistor 23 by shifting to an OFF state when the control pulse Sp1 is at H level, and connects the other end of the second resistor 23 to the ground G by shifting to an ON state when the control pulse Sp1 is at L level. |
