Invention Grant
- Patent Title: Switching regulator
- Patent Title (中): 开关稳压器
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Application No.: US11823089Application Date: 2007-06-26
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Publication No.: US07705578B2Publication Date: 2010-04-27
- Inventor: Toshiyuki Tsuzaki , Michiyasu Deguchi
- Applicant: Toshiyuki Tsuzaki , Michiyasu Deguchi
- Applicant Address: JP Chiba
- Assignee: Seiko Instruments Inc.
- Current Assignee: Seiko Instruments Inc.
- Current Assignee Address: JP Chiba
- Agency: Brinks Hofer Gilson & Lione
- Priority: JP2006-176109 20060627
- Main IPC: G05F1/40
- IPC: G05F1/40 ; H02M1/12

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).
Public/Granted literature
- US20080007239A1 Switching regulator Public/Granted day:2008-01-10
Information query
IPC分类: