Method for detecting output short circuit in switching...

Details Method for detecting output short circuit in switching... Method for detecting output short circuit in switching...

2011-01-18

2011-01-18

Berhane, Adolf (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

Reexamination Certificate

active

07872460

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.

REFERENCES:
patent: 6788513 (2004-09-01), Kimura
patent: 7292016 (2007-11-01), Wake
patent: 2006/0290333 (2006-12-01), Fukushi et al.
patent: 2007/0177322 (2007-08-01), Jacobs
patent: 2007/0216372 (2007-09-01), Weng et al.
patent: 2003-033010 (2003-01-01), None

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