Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2006-08-08
2006-08-08
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
07088083
ABSTRACT:
The present invention provides a short-circuit protecting circuit of a switching regulator which does not require a capacitor having a large capacity in order to obtain a sufficient duty time. A pulse generating circuit for generating one clock with a short-circuit detection signal as a trigger signal is added, and a counter circuit for counting clock pulses of a clock signal is further inserted between a comparator and a latch circuit, whereby it becomes possible to produce a sufficient delay time based on a signal having a short period using a capacitor having a small capacity.
REFERENCES:
patent: 6163142 (2000-12-01), Tsujimoto
patent: 6300750 (2001-10-01), Oglesbee et al.
patent: 6580253 (2003-06-01), Kanakubo et al.
patent: 6847231 (2005-01-01), Kinugawa et al.
Adams & Wilks
Berhane Adolf
Seiko Instruments Inc.
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