Invention Grant
- Patent Title: Method for detecting output short circuit in switching regulator
- Patent Title (中): 检测开关稳压器输出短路的方法
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Application No.: US12198099Application Date: 2008-08-25
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Publication No.: US07872460B2Publication Date: 2011-01-18
- Inventor: Masami Aiura , Kanji Egawa
- Applicant: Masami Aiura , Kanji Egawa
- Applicant Address: US TX Austin
- Assignee: Freescale Semiconductor, Inc.
- Current Assignee: Freescale Semiconductor, Inc.
- Current Assignee Address: US TX Austin
- Agent Charles Bergere
- Main IPC: G05F1/00
- IPC: G05F1/00

Abstract:
A method and circuit for accurately detecting an output short circuit in a switching regulator. A first transistor and a second transistor are connected in series and driven in a complementary manner. A comparator compares output current, which is generated when the first and second transistors are driven, with a short circuit detection threshold to generate a first short circuit detection signal. A timing controller retrieves the first short circuit detection signal generated by the comparator at a predetermined time to generate a second short circuit detection signal.
Public/Granted literature
- US20100045250A1 METHOD FOR DETECTING OUTPUT SHORT CIRCUIT IN SWITCHING REGULATOR Public/Granted day:2010-02-25
Information query
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