| 摘要 |
PROBLEM TO BE SOLVED: To provide a power source controller which can control the turning-on width of PWM signals so that the controller can control a switching power source with high responsiveness against abrupt load fluctuation. SOLUTION: A power source controller is provided with a latch 100 which sets such data that increase the turning-on width of PWM signals by a second prescribed time width longer than a first prescribed time width, a latch 99 which sets such data that reduce the turning-on width of the PWM signals by the second prescribed time width longer than the first prescribed time width, a latch which sets the threshold time of the turning-off time of the PWM signals, and data selecting means which controls the increasing and decreasing widths for controlling the turning-on width of the PWM signals in accordance with the transition of the relation between the turning-of width and threshold time. |
