| 摘要 |
A switching power supply includes: a blanking period generating circuit for prohibiting a main switching element from being turned on from the time the main switching element is turned on to the time a blanking time elapses; a soft start period generating circuit for generating a soft start period from the start of the oscillation of the main switching element to the lapse of a soft start time; and a blanking time adjusting circuit for generating a signal for shortening the blanking time in the soft start period as compared with after the lapse of the soft start period.
|
