| 摘要 |
PROBLEM TO BE SOLVED: To obtain a digital control power supply in which the output voltage can be changed to a target voltage in a shortest time, without saturating the output inductor current when change of the output voltage is instructed.SOLUTION: The digital control power supply includes a DCDC converter 1 having an output inductor 11, and a power supply control unit 2 which determines the duty of a pulse width modulated pulse signal by feeding back the output voltage of the DCDC converter 1, and controls the output voltage by pulse width modulation. The power supply control unit 2 presets the maximum value of variation in the output voltage, by which a current flowing through the output inductor 11 is not saturated, as a maximum command value variation. When changing the output voltage, the voltage command value to the DCDC converter 1 is changed gradually with the maximum command value variation or less, every capturing period of the output voltage. |
