Invention Grant
US07705578B2 Switching regulator 有权
开关稳压器

Switching regulator
Abstract:
Provided is a switching regulator for preventing generation of an inrush current flowing through a switching element of an output stage, which is provided in the switching regulator. A soft start control circuit (116) detects a current flowing through a PMOS transistor (104) serving as a switching element of an output stage. When the detected current is equal to or larger than a current limiting value for limiting the current flowing through the PMOS transistor (104), the soft start control circuit (116) controls the PMOS transistor (104) to be turned off. Accordingly, it is possible to prevent generation of the inrush current flowing through the PMOS transistor (104).
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