Invention Grant
US08013585B2 DC-DC converter and DC-DC power conversion method employing overcurrent protection
有权
DC-DC转换器和采用过流保护的DC-DC电源转换方法
- Patent Title: DC-DC converter and DC-DC power conversion method employing overcurrent protection
- Patent Title (中): DC-DC转换器和采用过流保护的DC-DC电源转换方法
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Application No.: US12051556Application Date: 2008-03-19
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Publication No.: US08013585B2Publication Date: 2011-09-06
- Inventor: Kouhei Yamada
- Applicant: Kouhei Yamada
- Applicant Address: JP Tokyo
- Assignee: Fuji Electric Systems Co., Ltd.
- Current Assignee: Fuji Electric Systems Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Rabin & Berdo, P.C.
- Priority: JP2007-070530 20070319
- Main IPC: G05F1/573
- IPC: G05F1/573

Abstract:
An overcurrent detection circuit (50 in FIG. 1) in a DC-DC converter is connected to a switching control circuit (1), and detects an inductor current flowing through an inductor (L) during the ON control of a switching element (Mn), so as to decide whether the inductor current has decreased down to a prescribed value. The switching control circuit (1) alters the switching timing of a control signal to extend the OFF state of a switching element (Mp) until the decrease of the inductor current to a predetermined magnitude is decided by the overcurrent detection circuit (50). Even when a delay is involved in an overcurrent detection operation, the DC-DC converter is still capable of overcurrent limitation.
Public/Granted literature
- US20080231244A1 DC-DC CONVERTER Public/Granted day:2008-09-25
Information query
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